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Merge remote-tracking branch 'stable/linux-5.10.y' into rpi-5.10.y

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This commit is contained in:
Dom Cobley
2021-07-09 18:12:44 +01:00
parent ea2eec0edd a09a522772
commit 4a1f59200d
110 changed files with 1225 additions and 554 deletions
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2
Makefile
View File

@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 5
PATCHLEVEL = 10
SUBLEVEL = 46
SUBLEVEL = 48
EXTRAVERSION =
NAME = Dare mighty things

16
arch/arm/kernel/setup.c
View File

@@ -544,9 +544,11 @@ void notrace cpu_init(void)
* In Thumb-2, msr with an immediate value is not allowed.
*/
#ifdef CONFIG_THUMB2_KERNEL
#define PLC "r"
#define PLC_l "l"
#define PLC_r "r"
#else
#define PLC "I"
#define PLC_l "I"
#define PLC_r "I"
#endif
/*
@@ -568,15 +570,15 @@ void notrace cpu_init(void)
"msr cpsr_c, %9"
:
: "r" (stk),
PLC (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
PLC_r (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
"I" (offsetof(struct stack, irq[0])),
PLC (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
PLC_r (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
"I" (offsetof(struct stack, abt[0])),
PLC (PSR_F_BIT | PSR_I_BIT | UND_MODE),
PLC_r (PSR_F_BIT | PSR_I_BIT | UND_MODE),
"I" (offsetof(struct stack, und[0])),
PLC (PSR_F_BIT | PSR_I_BIT | FIQ_MODE),
PLC_r (PSR_F_BIT | PSR_I_BIT | FIQ_MODE),
"I" (offsetof(struct stack, fiq[0])),
PLC (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
PLC_l (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
: "r14");
#endif
}

17
arch/arm64/mm/init.c
View File

@@ -174,14 +174,21 @@ static void __init reserve_elfcorehdr(void)
#endif /* CONFIG_CRASH_DUMP */
/*
* Return the maximum physical address for a zone with a given address size
* limit. It currently assumes that for memory starting above 4G, 32-bit
* devices will use a DMA offset.
* Return the maximum physical address for a zone accessible by the given bits
* limit. If DRAM starts above 32-bit, expand the zone to the maximum
* available memory, otherwise cap it at 32-bit.
*/
static phys_addr_t __init max_zone_phys(unsigned int zone_bits)
{
phys_addr_t offset = memblock_start_of_DRAM() & GENMASK_ULL(63, zone_bits);
return min(offset + (1ULL << zone_bits), memblock_end_of_DRAM());
phys_addr_t zone_mask = DMA_BIT_MASK(zone_bits);
phys_addr_t phys_start = memblock_start_of_DRAM();
if (phys_start > U32_MAX)
zone_mask = PHYS_ADDR_MAX;
else if (phys_start > zone_mask)
zone_mask = U32_MAX;
return min(zone_mask, memblock_end_of_DRAM() - 1) + 1;
}
static void __init zone_sizes_init(unsigned long min, unsigned long max)

37
arch/arm64/mm/mmu.c
View File

@@ -469,6 +469,21 @@ void __init mark_linear_text_alias_ro(void)
PAGE_KERNEL_RO);
}
static bool crash_mem_map __initdata;
static int __init enable_crash_mem_map(char *arg)
{
/*
* Proper parameter parsing is done by reserve_crashkernel(). We only
* need to know if the linear map has to avoid block mappings so that
* the crashkernel reservations can be unmapped later.
*/
crash_mem_map = true;
return 0;
}
early_param("crashkernel", enable_crash_mem_map);
static void __init map_mem(pgd_t *pgdp)
{
phys_addr_t kernel_start = __pa_symbol(_text);
@@ -477,7 +492,7 @@ static void __init map_mem(pgd_t *pgdp)
int flags = 0;
u64 i;
if (rodata_full || debug_pagealloc_enabled())
if (rodata_full || crash_mem_map || debug_pagealloc_enabled())
flags = NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
/*
@@ -487,11 +502,6 @@ static void __init map_mem(pgd_t *pgdp)
* the following for-loop
*/
memblock_mark_nomap(kernel_start, kernel_end - kernel_start);
#ifdef CONFIG_KEXEC_CORE
if (crashk_res.end)
memblock_mark_nomap(crashk_res.start,
resource_size(&crashk_res));
#endif
/* map all the memory banks */
for_each_mem_range(i, &start, &end) {
@@ -519,21 +529,6 @@ static void __init map_mem(pgd_t *pgdp)
__map_memblock(pgdp, kernel_start, kernel_end,
PAGE_KERNEL, NO_CONT_MAPPINGS);
memblock_clear_nomap(kernel_start, kernel_end - kernel_start);
#ifdef CONFIG_KEXEC_CORE
/*
* Use page-level mappings here so that we can shrink the region
* in page granularity and put back unused memory to buddy system
* through /sys/kernel/kexec_crash_size interface.
*/
if (crashk_res.end) {
__map_memblock(pgdp, crashk_res.start, crashk_res.end + 1,
PAGE_KERNEL,
NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS);
memblock_clear_nomap(crashk_res.start,
resource_size(&crashk_res));
}
#endif
}
void mark_rodata_ro(void)

10
arch/mips/generic/board-boston.its.S
View File

@@ -1,22 +1,22 @@
/ {
images {
fdt@boston {
fdt-boston {
description = "img,boston Device Tree";
data = /incbin/("boot/dts/img/boston.dtb");
type = "flat_dt";
arch = "mips";
compression = "none";
hash@0 {
hash {
algo = "sha1";
};
};
};
configurations {
conf@boston {
conf-boston {
description = "Boston Linux kernel";
kernel = "kernel@0";
fdt = "fdt@boston";
kernel = "kernel";
fdt = "fdt-boston";
};
};
};

10
arch/mips/generic/board-ni169445.its.S
View File

@@ -1,22 +1,22 @@
/ {
images {
fdt@ni169445 {
fdt-ni169445 {
description = "NI 169445 device tree";
data = /incbin/("boot/dts/ni/169445.dtb");
type = "flat_dt";
arch = "mips";
compression = "none";
hash@0 {
hash {
algo = "sha1";
};
};
};
configurations {
conf@ni169445 {
conf-ni169445 {
description = "NI 169445 Linux Kernel";
kernel = "kernel@0";
fdt = "fdt@ni169445";
kernel = "kernel";
fdt = "fdt-ni169445";
};
};
};

20
arch/mips/generic/board-ocelot.its.S
View File

@@ -1,40 +1,40 @@
/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
/ {
images {
fdt@ocelot_pcb123 {
fdt-ocelot_pcb123 {
description = "MSCC Ocelot PCB123 Device Tree";
data = /incbin/("boot/dts/mscc/ocelot_pcb123.dtb");
type = "flat_dt";
arch = "mips";
compression = "none";
hash@0 {
hash {
algo = "sha1";
};
};
fdt@ocelot_pcb120 {
fdt-ocelot_pcb120 {
description = "MSCC Ocelot PCB120 Device Tree";
data = /incbin/("boot/dts/mscc/ocelot_pcb120.dtb");
type = "flat_dt";
arch = "mips";
compression = "none";
hash@0 {
hash {
algo = "sha1";
};
};
};
configurations {
conf@ocelot_pcb123 {
conf-ocelot_pcb123 {
description = "Ocelot Linux kernel";
kernel = "kernel@0";
fdt = "fdt@ocelot_pcb123";
kernel = "kernel";
fdt = "fdt-ocelot_pcb123";
};
conf@ocelot_pcb120 {
conf-ocelot_pcb120 {
description = "Ocelot Linux kernel";
kernel = "kernel@0";
fdt = "fdt@ocelot_pcb120";
kernel = "kernel";
fdt = "fdt-ocelot_pcb120";
};
};
};

10
arch/mips/generic/board-xilfpga.its.S
View File

@@ -1,22 +1,22 @@
/ {
images {
fdt@xilfpga {
fdt-xilfpga {
description = "MIPSfpga (xilfpga) Device Tree";
data = /incbin/("boot/dts/xilfpga/nexys4ddr.dtb");
type = "flat_dt";
arch = "mips";
compression = "none";
hash@0 {
hash {
algo = "sha1";
};
};
};
configurations {
conf@xilfpga {
conf-xilfpga {
description = "MIPSfpga Linux kernel";
kernel = "kernel@0";
fdt = "fdt@xilfpga";
kernel = "kernel";
fdt = "fdt-xilfpga";
};
};
};

10
arch/mips/generic/vmlinux.its.S
View File

@@ -6,7 +6,7 @@
#address-cells = <ADDR_CELLS>;
images {
kernel@0 {
kernel {
description = KERNEL_NAME;
data = /incbin/(VMLINUX_BINARY);
type = "kernel";
@@ -15,18 +15,18 @@
compression = VMLINUX_COMPRESSION;
load = /bits/ ADDR_BITS <VMLINUX_LOAD_ADDRESS>;
entry = /bits/ ADDR_BITS <VMLINUX_ENTRY_ADDRESS>;
hash@0 {
hash {
algo = "sha1";
};
};
};
configurations {
default = "conf@default";
default = "conf-default";
conf@default {
conf-default {
description = "Generic Linux kernel";
kernel = "kernel@0";
kernel = "kernel";
};
};
};

2
arch/riscv/Makefile
View File

@@ -14,7 +14,7 @@ ifeq ($(CONFIG_DYNAMIC_FTRACE),y)
LDFLAGS_vmlinux := --no-relax
endif
ifeq ($(CONFIG_64BIT)$(CONFIG_CMODEL_MEDLOW),yy)
ifeq ($(CONFIG_CMODEL_MEDLOW),y)
KBUILD_CFLAGS_MODULE += -mcmodel=medany
endif

18
arch/s390/include/asm/stacktrace.h
View File

@@ -90,12 +90,16 @@ struct stack_frame {
CALL_ARGS_4(arg1, arg2, arg3, arg4); \
register unsigned long r4 asm("6") = (unsigned long)(arg5)
#define CALL_FMT_0 "=&d" (r2) :
#define CALL_FMT_1 "+&d" (r2) :
#define CALL_FMT_2 CALL_FMT_1 "d" (r3),
#define CALL_FMT_3 CALL_FMT_2 "d" (r4),
#define CALL_FMT_4 CALL_FMT_3 "d" (r5),
#define CALL_FMT_5 CALL_FMT_4 "d" (r6),
/*
* To keep this simple mark register 2-6 as being changed (volatile)
* by the called function, even though register 6 is saved/nonvolatile.
*/
#define CALL_FMT_0 "=&d" (r2)
#define CALL_FMT_1 "+&d" (r2)
#define CALL_FMT_2 CALL_FMT_1, "+&d" (r3)
#define CALL_FMT_3 CALL_FMT_2, "+&d" (r4)
#define CALL_FMT_4 CALL_FMT_3, "+&d" (r5)
#define CALL_FMT_5 CALL_FMT_4, "+&d" (r6)
#define CALL_CLOBBER_5 "0", "1", "14", "cc", "memory"
#define CALL_CLOBBER_4 CALL_CLOBBER_5
@@ -117,7 +121,7 @@ struct stack_frame {
" brasl 14,%[_fn]\n" \
" la 15,0(%[_prev])\n" \
: [_prev] "=&a" (prev), CALL_FMT_##nr \
[_stack] "R" (stack), \
: [_stack] "R" (stack), \
[_bc] "i" (offsetof(struct stack_frame, back_chain)), \
[_frame] "d" (frame), \
[_fn] "X" (fn) : CALL_CLOBBER_##nr); \

2
arch/x86/entry/common.c
View File

@@ -127,8 +127,8 @@ static noinstr bool __do_fast_syscall_32(struct pt_regs *regs)
/* User code screwed up. */
regs->ax = -EFAULT;
instrumentation_end();
local_irq_disable();
instrumentation_end();
irqentry_exit_to_user_mode(regs);
return false;
}

23
arch/x86/events/core.c
View File

@@ -45,9 +45,11 @@
#include "perf_event.h"
struct x86_pmu x86_pmu __read_mostly;
static struct pmu pmu;
DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = {
.enabled = 1,
.pmu = &pmu,
};
DEFINE_STATIC_KEY_FALSE(rdpmc_never_available_key);
@@ -372,10 +374,12 @@ int x86_reserve_hardware(void)
if (!atomic_inc_not_zero(&pmc_refcount)) {
mutex_lock(&pmc_reserve_mutex);
if (atomic_read(&pmc_refcount) == 0) {
if (!reserve_pmc_hardware())
if (!reserve_pmc_hardware()) {
err = -EBUSY;
else
} else {
reserve_ds_buffers();
reserve_lbr_buffers();
}
}
if (!err)
atomic_inc(&pmc_refcount);
@@ -710,16 +714,23 @@ void x86_pmu_enable_all(int added)
}
}
static struct pmu pmu;
static inline int is_x86_event(struct perf_event *event)
{
return event->pmu == &pmu;
}
struct pmu *x86_get_pmu(void)
struct pmu *x86_get_pmu(unsigned int cpu)
{
return &pmu;
struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
/*
* All CPUs of the hybrid type have been offline.
* The x86_get_pmu() should not be invoked.
*/
if (WARN_ON_ONCE(!cpuc->pmu))
return &pmu;
return cpuc->pmu;
}
/*
* Event scheduler state:

2
arch/x86/events/intel/core.c
View File

@@ -4747,7 +4747,7 @@ static void update_tfa_sched(void *ignored)
* and if so force schedule out for all event types all contexts
*/
if (test_bit(3, cpuc->active_mask))
perf_pmu_resched(x86_get_pmu());
perf_pmu_resched(x86_get_pmu(smp_processor_id()));
}
static ssize_t show_sysctl_tfa(struct device *cdev,

4
arch/x86/events/intel/ds.c
View File

@@ -2076,7 +2076,7 @@ void __init intel_ds_init(void)
PERF_SAMPLE_TIME;
x86_pmu.flags |= PMU_FL_PEBS_ALL;
pebs_qual = "-baseline";
x86_get_pmu()->capabilities |= PERF_PMU_CAP_EXTENDED_REGS;
x86_get_pmu(smp_processor_id())->capabilities |= PERF_PMU_CAP_EXTENDED_REGS;
} else {
/* Only basic record supported */
x86_pmu.large_pebs_flags &=
@@ -2091,7 +2091,7 @@ void __init intel_ds_init(void)
if (x86_pmu.intel_cap.pebs_output_pt_available) {
pr_cont("PEBS-via-PT, ");
x86_get_pmu()->capabilities |= PERF_PMU_CAP_AUX_OUTPUT;
x86_get_pmu(smp_processor_id())->capabilities |= PERF_PMU_CAP_AUX_OUTPUT;
}
break;

36
arch/x86/events/intel/lbr.c
View File

@@ -658,7 +658,6 @@ static inline bool branch_user_callstack(unsigned br_sel)
void intel_pmu_lbr_add(struct perf_event *event)
{
struct kmem_cache *kmem_cache = event->pmu->task_ctx_cache;
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
if (!x86_pmu.lbr_nr)
@@ -696,16 +695,11 @@ void intel_pmu_lbr_add(struct perf_event *event)
perf_sched_cb_inc(event->ctx->pmu);
if (!cpuc->lbr_users++ && !event->total_time_running)
intel_pmu_lbr_reset();
if (static_cpu_has(X86_FEATURE_ARCH_LBR) &&
kmem_cache && !cpuc->lbr_xsave &&
(cpuc->lbr_users != cpuc->lbr_pebs_users))
cpuc->lbr_xsave = kmem_cache_alloc(kmem_cache, GFP_KERNEL);
}
void release_lbr_buffers(void)
{
struct kmem_cache *kmem_cache = x86_get_pmu()->task_ctx_cache;
struct kmem_cache *kmem_cache;
struct cpu_hw_events *cpuc;
int cpu;
@@ -714,6 +708,7 @@ void release_lbr_buffers(void)
for_each_possible_cpu(cpu) {
cpuc = per_cpu_ptr(&cpu_hw_events, cpu);
kmem_cache = x86_get_pmu(cpu)->task_ctx_cache;
if (kmem_cache && cpuc->lbr_xsave) {
kmem_cache_free(kmem_cache, cpuc->lbr_xsave);
cpuc->lbr_xsave = NULL;
@@ -721,6 +716,27 @@ void release_lbr_buffers(void)
}
}
void reserve_lbr_buffers(void)
{
struct kmem_cache *kmem_cache;
struct cpu_hw_events *cpuc;
int cpu;
if (!static_cpu_has(X86_FEATURE_ARCH_LBR))
return;
for_each_possible_cpu(cpu) {
cpuc = per_cpu_ptr(&cpu_hw_events, cpu);
kmem_cache = x86_get_pmu(cpu)->task_ctx_cache;
if (!kmem_cache || cpuc->lbr_xsave)
continue;
cpuc->lbr_xsave = kmem_cache_alloc_node(kmem_cache,
GFP_KERNEL | __GFP_ZERO,
cpu_to_node(cpu));
}
}
void intel_pmu_lbr_del(struct perf_event *event)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
@@ -1609,7 +1625,7 @@ void intel_pmu_lbr_init_hsw(void)
x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
x86_pmu.lbr_sel_map = hsw_lbr_sel_map;
x86_get_pmu()->task_ctx_cache = create_lbr_kmem_cache(size, 0);
x86_get_pmu(smp_processor_id())->task_ctx_cache = create_lbr_kmem_cache(size, 0);
if (lbr_from_signext_quirk_needed())
static_branch_enable(&lbr_from_quirk_key);
@@ -1629,7 +1645,7 @@ __init void intel_pmu_lbr_init_skl(void)
x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
x86_pmu.lbr_sel_map = hsw_lbr_sel_map;
x86_get_pmu()->task_ctx_cache = create_lbr_kmem_cache(size, 0);
x86_get_pmu(smp_processor_id())->task_ctx_cache = create_lbr_kmem_cache(size, 0);
/*
* SW branch filter usage:
@@ -1726,7 +1742,7 @@ static bool is_arch_lbr_xsave_available(void)
void __init intel_pmu_arch_lbr_init(void)
{
struct pmu *pmu = x86_get_pmu();
struct pmu *pmu = x86_get_pmu(smp_processor_id());
union cpuid28_eax eax;
union cpuid28_ebx ebx;
union cpuid28_ecx ecx;

10
arch/x86/events/perf_event.h
View File

@@ -326,6 +326,8 @@ struct cpu_hw_events {
int n_pair; /* Large increment events */
void *kfree_on_online[X86_PERF_KFREE_MAX];
struct pmu *pmu;
};
#define __EVENT_CONSTRAINT_RANGE(c, e, n, m, w, o, f) { \
@@ -897,7 +899,7 @@ static struct perf_pmu_events_ht_attr event_attr_##v = { \
.event_str_ht = ht, \
}
struct pmu *x86_get_pmu(void);
struct pmu *x86_get_pmu(unsigned int cpu);
extern struct x86_pmu x86_pmu __read_mostly;
static __always_inline struct x86_perf_task_context_opt *task_context_opt(void *ctx)
@@ -1122,6 +1124,8 @@ void reserve_ds_buffers(void);
void release_lbr_buffers(void);
void reserve_lbr_buffers(void);
extern struct event_constraint bts_constraint;
extern struct event_constraint vlbr_constraint;
@@ -1267,6 +1271,10 @@ static inline void release_lbr_buffers(void)
{
}
static inline void reserve_lbr_buffers(void)
{
}
static inline int intel_pmu_init(void)
{
return 0;

30
arch/x86/include/asm/fpu/internal.h
View File

@@ -204,6 +204,14 @@ static inline void copy_fxregs_to_kernel(struct fpu *fpu)
asm volatile("fxsaveq %[fx]" : [fx] "=m" (fpu->state.fxsave));
}
static inline void fxsave(struct fxregs_state *fx)
{
if (IS_ENABLED(CONFIG_X86_32))
asm volatile( "fxsave %[fx]" : [fx] "=m" (*fx));
else
asm volatile("fxsaveq %[fx]" : [fx] "=m" (*fx));
}
/* These macros all use (%edi)/(%rdi) as the single memory argument. */
#define XSAVE ".byte " REX_PREFIX "0x0f,0xae,0x27"
#define XSAVEOPT ".byte " REX_PREFIX "0x0f,0xae,0x37"
@@ -268,28 +276,6 @@ static inline void copy_fxregs_to_kernel(struct fpu *fpu)
: "D" (st), "m" (*st), "a" (lmask), "d" (hmask) \
: "memory")
/*
* This function is called only during boot time when x86 caps are not set
* up and alternative can not be used yet.
*/
static inline void copy_xregs_to_kernel_booting(struct xregs_state *xstate)
{
u64 mask = xfeatures_mask_all;
u32 lmask = mask;
u32 hmask = mask >> 32;
int err;
WARN_ON(system_state != SYSTEM_BOOTING);
if (boot_cpu_has(X86_FEATURE_XSAVES))
XSTATE_OP(XSAVES, xstate, lmask, hmask, err);
else
XSTATE_OP(XSAVE, xstate, lmask, hmask, err);
/* We should never fault when copying to a kernel buffer: */
WARN_ON_FPU(err);
}
/*
* This function is called only during boot time when x86 caps are not set
* up and alternative can not be used yet.

1
arch/x86/include/asm/kvm_host.h
View File

@@ -296,6 +296,7 @@ union kvm_mmu_extended_role {
unsigned int cr4_pke:1;
unsigned int cr4_smap:1;
unsigned int cr4_smep:1;
unsigned int cr4_la57:1;
unsigned int maxphyaddr:6;
};
};

26
arch/x86/kernel/fpu/signal.c
View File

@@ -221,28 +221,18 @@ sanitize_restored_user_xstate(union fpregs_state *state,
if (use_xsave()) {
/*
* Note: we don't need to zero the reserved bits in the
* xstate_header here because we either didn't copy them at all,
* or we checked earlier that they aren't set.
* Clear all feature bits which are not set in
* user_xfeatures and clear all extended features
* for fx_only mode.
*/
u64 mask = fx_only ? XFEATURE_MASK_FPSSE : user_xfeatures;
/*
* 'user_xfeatures' might have bits clear which are
* set in header->xfeatures. This represents features that
* were in init state prior to a signal delivery, and need
* to be reset back to the init state. Clear any user
* feature bits which are set in the kernel buffer to get
* them back to the init state.
*
* Supervisor state is unchanged by input from userspace.
* Ensure supervisor state bits stay set and supervisor
* state is not modified.
* Supervisor state has to be preserved. The sigframe
* restore can only modify user features, i.e. @mask
* cannot contain them.
*/
if (fx_only)
header->xfeatures = XFEATURE_MASK_FPSSE;
else
header->xfeatures &= user_xfeatures |
xfeatures_mask_supervisor();
header->xfeatures &= mask | xfeatures_mask_supervisor();
}
if (use_fxsr()) {

41
arch/x86/kernel/fpu/xstate.c
View File

@@ -440,6 +440,25 @@ static void __init print_xstate_offset_size(void)
}
}
/*
* All supported features have either init state all zeros or are
* handled in setup_init_fpu() individually. This is an explicit
* feature list and does not use XFEATURE_MASK*SUPPORTED to catch
* newly added supported features at build time and make people
* actually look at the init state for the new feature.
*/
#define XFEATURES_INIT_FPSTATE_HANDLED \
(XFEATURE_MASK_FP | \
XFEATURE_MASK_SSE | \
XFEATURE_MASK_YMM | \
XFEATURE_MASK_OPMASK | \
XFEATURE_MASK_ZMM_Hi256 | \
XFEATURE_MASK_Hi16_ZMM | \
XFEATURE_MASK_PKRU | \
XFEATURE_MASK_BNDREGS | \
XFEATURE_MASK_BNDCSR | \
XFEATURE_MASK_PASID)
/*
* setup the xstate image representing the init state
*/
@@ -447,6 +466,10 @@ static void __init setup_init_fpu_buf(void)
{
static int on_boot_cpu __initdata = 1;
BUILD_BUG_ON((XFEATURE_MASK_USER_SUPPORTED |
XFEATURE_MASK_SUPERVISOR_SUPPORTED) !=
XFEATURES_INIT_FPSTATE_HANDLED);
WARN_ON_FPU(!on_boot_cpu);
on_boot_cpu = 0;
@@ -466,10 +489,22 @@ static void __init setup_init_fpu_buf(void)
copy_kernel_to_xregs_booting(&init_fpstate.xsave);
/*
* Dump the init state again. This is to identify the init state
* of any feature which is not represented by all zero's.
* All components are now in init state. Read the state back so
* that init_fpstate contains all non-zero init state. This only
* works with XSAVE, but not with XSAVEOPT and XSAVES because
* those use the init optimization which skips writing data for
* components in init state.
*
* XSAVE could be used, but that would require to reshuffle the
* data when XSAVES is available because XSAVES uses xstate
* compaction. But doing so is a pointless exercise because most
* components have an all zeros init state except for the legacy
* ones (FP and SSE). Those can be saved with FXSAVE into the
* legacy area. Adding new features requires to ensure that init
* state is all zeroes or if not to add the necessary handling
* here.
*/
copy_xregs_to_kernel_booting(&init_fpstate.xsave);
fxsave(&init_fpstate.fxsave);
}
static int xfeature_uncompacted_offset(int xfeature_nr)

1
arch/x86/kvm/mmu/mmu.c
View File

@@ -4442,6 +4442,7 @@ static union kvm_mmu_extended_role kvm_calc_mmu_role_ext(struct kvm_vcpu *vcpu)
ext.cr4_smap = !!kvm_read_cr4_bits(vcpu, X86_CR4_SMAP);
ext.cr4_pse = !!is_pse(vcpu);
ext.cr4_pke = !!kvm_read_cr4_bits(vcpu, X86_CR4_PKE);
ext.cr4_la57 = !!kvm_read_cr4_bits(vcpu, X86_CR4_LA57);
ext.maxphyaddr = cpuid_maxphyaddr(vcpu);
ext.valid = 1;

32
arch/x86/kvm/svm/sev.c
View File

@@ -130,9 +130,25 @@ static void sev_asid_free(int asid)
mutex_unlock(&sev_bitmap_lock);
}
static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
static void sev_decommission(unsigned int handle)
{
struct sev_data_decommission *decommission;
if (!handle)
return;
decommission = kzalloc(sizeof(*decommission), GFP_KERNEL);
if (!decommission)
return;
decommission->handle = handle;
sev_guest_decommission(decommission, NULL);
kfree(decommission);
}
static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
{
struct sev_data_deactivate *data;
if (!handle)
@@ -152,15 +168,7 @@ static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
kfree(data);
decommission = kzalloc(sizeof(*decommission), GFP_KERNEL);
if (!decommission)
return;
/* decommission handle */
decommission->handle = handle;
sev_guest_decommission(decommission, NULL);
kfree(decommission);
sev_decommission(handle);
}
static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp)
@@ -288,8 +296,10 @@ static int sev_launch_start(struct kvm *kvm, struct kvm_sev_cmd *argp)
/* Bind ASID to this guest */
ret = sev_bind_asid(kvm, start->handle, error);
if (ret)
if (ret) {
sev_decommission(start->handle);
goto e_free_session;
}
/* return handle to userspace */
params.handle = start->handle;

44
arch/x86/pci/fixup.c
View File

@@ -779,4 +779,48 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x1571, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x15b1, pci_amd_enable_64bit_bar);
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, 0x1601, pci_amd_enable_64bit_bar);
#define RS690_LOWER_TOP_OF_DRAM2 0x30
#define RS690_LOWER_TOP_OF_DRAM2_VALID 0x1
#define RS690_UPPER_TOP_OF_DRAM2 0x31
#define RS690_HTIU_NB_INDEX 0xA8
#define RS690_HTIU_NB_INDEX_WR_ENABLE 0x100
#define RS690_HTIU_NB_DATA 0xAC
/*
* Some BIOS implementations support RAM above 4GB, but do not configure the
* PCI host to respond to bus master accesses for these addresses. These
* implementations set the TOP_OF_DRAM_SLOT1 register correctly, so PCI DMA
* works as expected for addresses below 4GB.
*
* Reference: "AMD RS690 ASIC Family Register Reference Guide" (pg. 2-57)
* https://www.amd.com/system/files/TechDocs/43372_rs690_rrg_3.00o.pdf
*/
static void rs690_fix_64bit_dma(struct pci_dev *pdev)
{
u32 val = 0;
phys_addr_t top_of_dram = __pa(high_memory - 1) + 1;
if (top_of_dram <= (1ULL << 32))
return;
pci_write_config_dword(pdev, RS690_HTIU_NB_INDEX,
RS690_LOWER_TOP_OF_DRAM2);
pci_read_config_dword(pdev, RS690_HTIU_NB_DATA, &val);
if (val)
return;
pci_info(pdev, "Adjusting top of DRAM to %pa for 64-bit DMA support\n", &top_of_dram);
pci_write_config_dword(pdev, RS690_HTIU_NB_INDEX,
RS690_UPPER_TOP_OF_DRAM2 | RS690_HTIU_NB_INDEX_WR_ENABLE);
pci_write_config_dword(pdev, RS690_HTIU_NB_DATA, top_of_dram >> 32);
pci_write_config_dword(pdev, RS690_HTIU_NB_INDEX,
RS690_LOWER_TOP_OF_DRAM2 | RS690_HTIU_NB_INDEX_WR_ENABLE);
pci_write_config_dword(pdev, RS690_HTIU_NB_DATA,
top_of_dram | RS690_LOWER_TOP_OF_DRAM2_VALID);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7910, rs690_fix_64bit_dma);
#endif

2
arch/x86/xen/enlighten_pv.c
View File

@@ -586,8 +586,10 @@ DEFINE_IDTENTRY_RAW(xenpv_exc_debug)
DEFINE_IDTENTRY_RAW(exc_xen_unknown_trap)
{
/* This should never happen and there is no way to handle it. */
instrumentation_begin();
pr_err("Unknown trap in Xen PV mode.");
BUG();
instrumentation_end();
}
struct trap_array_entry {

17
certs/Kconfig
View File

@@ -83,4 +83,21 @@ config SYSTEM_BLACKLIST_HASH_LIST
wrapper to incorporate the list into the kernel. Each <hash> should
be a string of hex digits.
config SYSTEM_REVOCATION_LIST
bool "Provide system-wide ring of revocation certificates"
depends on SYSTEM_BLACKLIST_KEYRING
depends on PKCS7_MESSAGE_PARSER=y
help
If set, this allows revocation certificates to be stored in the
blacklist keyring and implements a hook whereby a PKCS#7 message can
be checked to see if it matches such a certificate.
config SYSTEM_REVOCATION_KEYS
string "X.509 certificates to be preloaded into the system blacklist keyring"
depends on SYSTEM_REVOCATION_LIST
help
If set, this option should be the filename of a PEM-formatted file
containing X.509 certificates to be included in the default blacklist
keyring.
endmenu

21
certs/Makefile
View File

@@ -3,8 +3,9 @@
# Makefile for the linux kernel signature checking certificates.
#
obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o
obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o
obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o
ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),"")
obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o
else
@@ -29,7 +30,7 @@ $(obj)/x509_certificate_list: scripts/extract-cert $(SYSTEM_TRUSTED_KEYS_SRCPREF
$(call if_changed,extract_certs,$(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_TRUSTED_KEYS))
endif # CONFIG_SYSTEM_TRUSTED_KEYRING
clean-files := x509_certificate_list .x509.list
clean-files := x509_certificate_list .x509.list x509_revocation_list
ifeq ($(CONFIG_MODULE_SIG),y)
###############################################################################
@@ -104,3 +105,17 @@ targets += signing_key.x509
$(obj)/signing_key.x509: scripts/extract-cert $(X509_DEP) FORCE
$(call if_changed,extract_certs,$(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY))
endif # CONFIG_MODULE_SIG
ifeq ($(CONFIG_SYSTEM_REVOCATION_LIST),y)
$(eval $(call config_filename,SYSTEM_REVOCATION_KEYS))
$(obj)/revocation_certificates.o: $(obj)/x509_revocation_list
quiet_cmd_extract_certs = EXTRACT_CERTS $(patsubst "%",%,$(2))
cmd_extract_certs = scripts/extract-cert $(2) $@
targets += x509_revocation_list
$(obj)/x509_revocation_list: scripts/extract-cert $(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(SYSTEM_REVOCATION_KEYS_FILENAME) FORCE
$(call if_changed,extract_certs,$(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_REVOCATION_KEYS))
endif

64
certs/blacklist.c
View File

@@ -16,9 +16,15 @@
#include <linux/seq_file.h>
#include <keys/system_keyring.h>
#include "blacklist.h"
#include "common.h"
static struct key *blacklist_keyring;
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
extern __initconst const u8 revocation_certificate_list[];
extern __initconst const unsigned long revocation_certificate_list_size;
#endif
/*
* The description must be a type prefix, a colon and then an even number of
* hex digits. The hash is kept in the description.
@@ -144,6 +150,49 @@ int is_binary_blacklisted(const u8 *hash, size_t hash_len)
}
EXPORT_SYMBOL_GPL(is_binary_blacklisted);
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
/**
* add_key_to_revocation_list - Add a revocation certificate to the blacklist
* @data: The data blob containing the certificate
* @size: The size of data blob
*/
int add_key_to_revocation_list(const char *data, size_t size)
{
key_ref_t key;
key = key_create_or_update(make_key_ref(blacklist_keyring, true),
"asymmetric",
NULL,
data,
size,
((KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW),
KEY_ALLOC_NOT_IN_QUOTA | KEY_ALLOC_BUILT_IN);
if (IS_ERR(key)) {
pr_err("Problem with revocation key (%ld)\n", PTR_ERR(key));
return PTR_ERR(key);
}
return 0;
}
/**
* is_key_on_revocation_list - Determine if the key for a PKCS#7 message is revoked
* @pkcs7: The PKCS#7 message to check
*/
int is_key_on_revocation_list(struct pkcs7_message *pkcs7)
{
int ret;
ret = pkcs7_validate_trust(pkcs7, blacklist_keyring);
if (ret == 0)
return -EKEYREJECTED;
return -ENOKEY;
}
#endif
/*
* Initialise the blacklist
*/
@@ -177,3 +226,18 @@ static int __init blacklist_init(void)
* Must be initialised before we try and load the keys into the keyring.
*/
device_initcall(blacklist_init);
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
/*
* Load the compiled-in list of revocation X.509 certificates.
*/
static __init int load_revocation_certificate_list(void)
{
if (revocation_certificate_list_size)
pr_notice("Loading compiled-in revocation X.509 certificates\n");
return load_certificate_list(revocation_certificate_list, revocation_certificate_list_size,
blacklist_keyring);
}
late_initcall(load_revocation_certificate_list);
#endif

2
certs/blacklist.h
View File

@@ -1,3 +1,5 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <crypto/pkcs7.h>
extern const char __initconst *const blacklist_hashes[];

57
certs/common.c Normal file
View File

@@ -0,0 +1,57 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/kernel.h>
#include <linux/key.h>
#include "common.h"
int load_certificate_list(const u8 cert_list[],
const unsigned long list_size,
const struct key *keyring)
{
key_ref_t key;
const u8 *p, *end;
size_t plen;
p = cert_list;
end = p + list_size;
while (p < end) {
/* Each cert begins with an ASN.1 SEQUENCE tag and must be more
* than 256 bytes in size.
*/
if (end - p < 4)
goto dodgy_cert;
if (p[0] != 0x30 &&
p[1] != 0x82)
goto dodgy_cert;
plen = (p[2] << 8) | p[3];
plen += 4;
if (plen > end - p)
goto dodgy_cert;
key = key_create_or_update(make_key_ref(keyring, 1),
"asymmetric",
NULL,
p,
plen,
((KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ),
KEY_ALLOC_NOT_IN_QUOTA |
KEY_ALLOC_BUILT_IN |
KEY_ALLOC_BYPASS_RESTRICTION);
if (IS_ERR(key)) {
pr_err("Problem loading in-kernel X.509 certificate (%ld)\n",
PTR_ERR(key));
} else {
pr_notice("Loaded X.509 cert '%s'\n",
key_ref_to_ptr(key)->description);
key_ref_put(key);
}
p += plen;
}
return 0;
dodgy_cert:
pr_err("Problem parsing in-kernel X.509 certificate list\n");
return 0;
}

9
certs/common.h Normal file
View File

@@ -0,0 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _CERT_COMMON_H
#define _CERT_COMMON_H
int load_certificate_list(const u8 cert_list[], const unsigned long list_size,
const struct key *keyring);
#endif

21
certs/revocation_certificates.S Normal file
View File

@@ -0,0 +1,21 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/export.h>
#include <linux/init.h>
__INITRODATA
.align 8
.globl revocation_certificate_list
revocation_certificate_list:
__revocation_list_start:
.incbin "certs/x509_revocation_list"
__revocation_list_end:
.align 8
.globl revocation_certificate_list_size
revocation_certificate_list_size:
#ifdef CONFIG_64BIT
.quad __revocation_list_end - __revocation_list_start
#else
.long __revocation_list_end - __revocation_list_start
#endif

55
certs/system_keyring.c
View File

@@ -15,6 +15,7 @@
#include <keys/asymmetric-type.h>
#include <keys/system_keyring.h>
#include <crypto/pkcs7.h>
#include "common.h"
static struct key *builtin_trusted_keys;
#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
@@ -136,54 +137,10 @@ device_initcall(system_trusted_keyring_init);
*/
static __init int load_system_certificate_list(void)
{
key_ref_t key;
const u8 *p, *end;
size_t plen;
pr_notice("Loading compiled-in X.509 certificates\n");
p = system_certificate_list;
end = p + system_certificate_list_size;
while (p < end) {
/* Each cert begins with an ASN.1 SEQUENCE tag and must be more
* than 256 bytes in size.
*/
if (end - p < 4)
goto dodgy_cert;
if (p[0] != 0x30 &&
p[1] != 0x82)
goto dodgy_cert;
plen = (p[2] << 8) | p[3];
plen += 4;
if (plen > end - p)
goto dodgy_cert;
key = key_create_or_update(make_key_ref(builtin_trusted_keys, 1),
"asymmetric",
NULL,
p,
plen,
((KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ),
KEY_ALLOC_NOT_IN_QUOTA |
KEY_ALLOC_BUILT_IN |
KEY_ALLOC_BYPASS_RESTRICTION);
if (IS_ERR(key)) {
pr_err("Problem loading in-kernel X.509 certificate (%ld)\n",
PTR_ERR(key));
} else {
pr_notice("Loaded X.509 cert '%s'\n",
key_ref_to_ptr(key)->description);
key_ref_put(key);
}
p += plen;
}
return 0;
dodgy_cert:
pr_err("Problem parsing in-kernel X.509 certificate list\n");
return 0;
return load_certificate_list(system_certificate_list, system_certificate_list_size,
builtin_trusted_keys);
}
late_initcall(load_system_certificate_list);
@@ -241,6 +198,12 @@ int verify_pkcs7_message_sig(const void *data, size_t len,
pr_devel("PKCS#7 platform keyring is not available\n");
goto error;
}
ret = is_key_on_revocation_list(pkcs7);
if (ret != -ENOKEY) {
pr_devel("PKCS#7 platform key is on revocation list\n");
goto error;
}
}
ret = pkcs7_validate_trust(pkcs7, trusted_keys);
if (ret < 0) {

1
drivers/dma/Kconfig
View File

@@ -697,6 +697,7 @@ config XILINX_ZYNQMP_DMA
config XILINX_ZYNQMP_DPDMA
tristate "Xilinx DPDMA Engine"
depends on HAS_IOMEM && OF
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help

27
drivers/dma/mediatek/mtk-uart-apdma.c
View File

@@ -131,10 +131,7 @@ static unsigned int mtk_uart_apdma_read(struct mtk_chan *c, unsigned int reg)
static void mtk_uart_apdma_desc_free(struct virt_dma_desc *vd)
{
struct dma_chan *chan = vd->tx.chan;
struct mtk_chan *c = to_mtk_uart_apdma_chan(chan);
kfree(c->desc);
kfree(container_of(vd, struct mtk_uart_apdma_desc, vd));
}
static void mtk_uart_apdma_start_tx(struct mtk_chan *c)
@@ -207,14 +204,9 @@ static void mtk_uart_apdma_start_rx(struct mtk_chan *c)
static void mtk_uart_apdma_tx_handler(struct mtk_chan *c)
{
struct mtk_uart_apdma_desc *d = c->desc;
mtk_uart_apdma_write(c, VFF_INT_FLAG, VFF_TX_INT_CLR_B);
mtk_uart_apdma_write(c, VFF_INT_EN, VFF_INT_EN_CLR_B);
mtk_uart_apdma_write(c, VFF_EN, VFF_EN_CLR_B);
list_del(&d->vd.node);
vchan_cookie_complete(&d->vd);
}
static void mtk_uart_apdma_rx_handler(struct mtk_chan *c)
@@ -245,9 +237,17 @@ static void mtk_uart_apdma_rx_handler(struct mtk_chan *c)
c->rx_status = d->avail_len - cnt;
mtk_uart_apdma_write(c, VFF_RPT, wg);
}
list_del(&d->vd.node);
vchan_cookie_complete(&d->vd);
static void mtk_uart_apdma_chan_complete_handler(struct mtk_chan *c)
{
struct mtk_uart_apdma_desc *d = c->desc;
if (d) {
list_del(&d->vd.node);
vchan_cookie_complete(&d->vd);
c->desc = NULL;
}
}
static irqreturn_t mtk_uart_apdma_irq_handler(int irq, void *dev_id)
@@ -261,6 +261,7 @@ static irqreturn_t mtk_uart_apdma_irq_handler(int irq, void *dev_id)
mtk_uart_apdma_rx_handler(c);
else if (c->dir == DMA_MEM_TO_DEV)
mtk_uart_apdma_tx_handler(c);
mtk_uart_apdma_chan_complete_handler(c);
spin_unlock_irqrestore(&c->vc.lock, flags);
return IRQ_HANDLED;
@@ -348,7 +349,7 @@ static struct dma_async_tx_descriptor *mtk_uart_apdma_prep_slave_sg
return NULL;
/* Now allocate and setup the descriptor */
d = kzalloc(sizeof(*d), GFP_ATOMIC);
d = kzalloc(sizeof(*d), GFP_NOWAIT);
if (!d)
return NULL;
@@ -366,7 +367,7 @@ static void mtk_uart_apdma_issue_pending(struct dma_chan *chan)
unsigned long flags;
spin_lock_irqsave(&c->vc.lock, flags);
if (vchan_issue_pending(&c->vc)) {
if (vchan_issue_pending(&c->vc) && !c->desc) {
vd = vchan_next_desc(&c->vc);
c->desc = to_mtk_uart_apdma_desc(&vd->tx);

2
drivers/dma/sh/rcar-dmac.c
View File

@@ -1874,7 +1874,7 @@ static int rcar_dmac_probe(struct platform_device *pdev)
/* Enable runtime PM and initialize the device. */
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_get_sync(&pdev->dev);
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret < 0) {
dev_err(&pdev->dev, "runtime PM get sync failed (%d)\n", ret);
return ret;

4
drivers/dma/stm32-mdma.c
View File

@@ -1448,7 +1448,7 @@ static int stm32_mdma_alloc_chan_resources(struct dma_chan *c)
return -ENOMEM;
}
ret = pm_runtime_get_sync(dmadev->ddev.dev);
ret = pm_runtime_resume_and_get(dmadev->ddev.dev);
if (ret < 0)
return ret;
@@ -1714,7 +1714,7 @@ static int stm32_mdma_pm_suspend(struct device *dev)
u32 ccr, id;
int ret;
ret = pm_runtime_get_sync(dev);
ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
return ret;

7
drivers/dma/xilinx/xilinx_dpdma.c
View File

@@ -113,6 +113,7 @@
#define XILINX_DPDMA_CH_VDO 0x020
#define XILINX_DPDMA_CH_PYLD_SZ 0x024
#define XILINX_DPDMA_CH_DESC_ID 0x028
#define XILINX_DPDMA_CH_DESC_ID_MASK GENMASK(15, 0)
/* DPDMA descriptor fields */
#define XILINX_DPDMA_DESC_CONTROL_PREEMBLE 0xa5
@@ -866,7 +867,8 @@ static void xilinx_dpdma_chan_queue_transfer(struct xilinx_dpdma_chan *chan)
* will be used, but it should be enough.
*/
list_for_each_entry(sw_desc, &desc->descriptors, node)
sw_desc->hw.desc_id = desc->vdesc.tx.cookie;
sw_desc->hw.desc_id = desc->vdesc.tx.cookie
& XILINX_DPDMA_CH_DESC_ID_MASK;
sw_desc = list_first_entry(&desc->descriptors,
struct xilinx_dpdma_sw_desc, node);
@@ -1086,7 +1088,8 @@ static void xilinx_dpdma_chan_vsync_irq(struct xilinx_dpdma_chan *chan)
if (!chan->running || !pending)
goto out;
desc_id = dpdma_read(chan->reg, XILINX_DPDMA_CH_DESC_ID);
desc_id = dpdma_read(chan->reg, XILINX_DPDMA_CH_DESC_ID)
& XILINX_DPDMA_CH_DESC_ID_MASK;
/* If the retrigger raced with vsync, retry at the next frame. */
sw_desc = list_first_entry(&pending->descriptors,

2
drivers/dma/xilinx/zynqmp_dma.c
View File

@@ -468,7 +468,7 @@ static int zynqmp_dma_alloc_chan_resources(struct dma_chan *dchan)
struct zynqmp_dma_desc_sw *desc;
int i, ret;
ret = pm_runtime_get_sync(chan->dev);
ret = pm_runtime_resume_and_get(chan->dev);
if (ret < 0)
return ret;

2
drivers/gpio/Kconfig
View File

@@ -1352,6 +1352,7 @@ config GPIO_TPS68470
config GPIO_TQMX86
tristate "TQ-Systems QTMX86 GPIO"
depends on MFD_TQMX86 || COMPILE_TEST
depends on HAS_IOPORT_MAP
select GPIOLIB_IRQCHIP
help
This driver supports GPIO on the TQMX86 IO controller.
@@ -1419,6 +1420,7 @@ menu "PCI GPIO expanders"
config GPIO_AMD8111
tristate "AMD 8111 GPIO driver"
depends on X86 || COMPILE_TEST
depends on HAS_IOPORT_MAP
help
The AMD 8111 south bridge contains 32 GPIO pins which can be used.

2
drivers/gpio/gpio-mxc.c
View File

@@ -361,7 +361,7 @@ static int mxc_gpio_init_gc(struct mxc_gpio_port *port, int irq_base)
ct->chip.irq_unmask = irq_gc_mask_set_bit;
ct->chip.irq_set_type = gpio_set_irq_type;
ct->chip.irq_set_wake = gpio_set_wake_irq;
ct->chip.flags = IRQCHIP_MASK_ON_SUSPEND;
ct->chip.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND;
ct->regs.ack = GPIO_ISR;
ct->regs.mask = GPIO_IMR;

1
drivers/gpio/gpiolib-cdev.c
View File

@@ -1865,6 +1865,7 @@ static void gpio_v2_line_info_changed_to_v1(
struct gpio_v2_line_info_changed *lic_v2,
struct gpioline_info_changed *lic_v1)
{
memset(lic_v1, 0, sizeof(*lic_v1));
gpio_v2_line_info_to_v1(&lic_v2->info, &lic_v1->info);
lic_v1->timestamp = lic_v2->timestamp_ns;
lic_v1->event_type = lic_v2->event_type;

14
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
View File

@@ -238,9 +238,21 @@ static int amdgpu_dma_buf_pin(struct dma_buf_attachment *attach)
{
struct drm_gem_object *obj = attach->dmabuf->priv;
struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
int r;
/* pin buffer into GTT */
return amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
if (r)
return r;
if (bo->tbo.moving) {
r = dma_fence_wait(bo->tbo.moving, true);
if (r) {
amdgpu_bo_unpin(bo);
return r;
}
}
return 0;
}
/**

6
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
View File

@@ -6590,12 +6590,8 @@ static int gfx_v10_0_kiq_init_register(struct amdgpu_ring *ring)
if (ring->use_doorbell) {
WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_LOWER,
(adev->doorbell_index.kiq * 2) << 2);
/* If GC has entered CGPG, ringing doorbell > first page doesn't
* wakeup GC. Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround
* this issue.
*/
WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
(adev->doorbell.size - 4));
(adev->doorbell_index.userqueue_end * 2) << 2);
}
WREG32_SOC15(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL,

6
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
View File

@@ -3619,12 +3619,8 @@ static int gfx_v9_0_kiq_init_register(struct amdgpu_ring *ring)
if (ring->use_doorbell) {
WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_LOWER,
(adev->doorbell_index.kiq * 2) << 2);
/* If GC has entered CGPG, ringing doorbell > first page doesn't
* wakeup GC. Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround
* this issue.
*/
WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
(adev->doorbell.size - 4));
(adev->doorbell_index.userqueue_end * 2) << 2);
}
WREG32_SOC15_RLC(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL,

4
drivers/gpu/drm/nouveau/nouveau_bo.c
View File

@@ -590,7 +590,7 @@ nouveau_bo_sync_for_device(struct nouveau_bo *nvbo)
struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm;
int i;
if (!ttm_dma)
if (!ttm_dma || !ttm_dma->dma_address)
return;
/* Don't waste time looping if the object is coherent */
@@ -610,7 +610,7 @@ nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo)
struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm;
int i;
if (!ttm_dma)
if (!ttm_dma || !ttm_dma->dma_address)
return;
/* Don't waste time looping if the object is coherent */

17
drivers/gpu/drm/nouveau/nouveau_prime.c
View File

@@ -111,7 +111,22 @@ int nouveau_gem_prime_pin(struct drm_gem_object *obj)
if (ret)
return -EINVAL;
return 0;
ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
if (ret)
goto error;
if (nvbo->bo.moving)
ret = dma_fence_wait(nvbo->bo.moving, true);
ttm_bo_unreserve(&nvbo->bo);
if (ret)
goto error;
return ret;
error:
nouveau_bo_unpin(nvbo);
return ret;
}
void nouveau_gem_prime_unpin(struct drm_gem_object *obj)

14
drivers/gpu/drm/radeon/radeon_prime.c
View File

@@ -94,9 +94,19 @@ int radeon_gem_prime_pin(struct drm_gem_object *obj)
/* pin buffer into GTT */
ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
if (likely(ret == 0))
bo->prime_shared_count++;
if (unlikely(ret))
goto error;
if (bo->tbo.moving) {
ret = dma_fence_wait(bo->tbo.moving, false);
if (unlikely(ret)) {
radeon_bo_unpin(bo);
goto error;
}
}
bo->prime_shared_count++;
error:
radeon_bo_unreserve(bo);
return ret;
}

3
drivers/i2c/busses/i2c-i801.c
View File

@@ -974,6 +974,9 @@ static s32 i801_access(struct i2c_adapter *adap, u16 addr,
}
out:
/* Unlock the SMBus device for use by BIOS/ACPI */
outb_p(SMBHSTSTS_INUSE_STS, SMBHSTSTS(priv));
pm_runtime_mark_last_busy(&priv->pci_dev->dev);
pm_runtime_put_autosuspend(&priv->pci_dev->dev);
mutex_unlock(&priv->acpi_lock);

4
drivers/i2c/busses/i2c-robotfuzz-osif.c
View File

@@ -83,7 +83,7 @@ static int osif_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs,
}
}
ret = osif_usb_read(adapter, OSIFI2C_STOP, 0, 0, NULL, 0);
ret = osif_usb_write(adapter, OSIFI2C_STOP, 0, 0, NULL, 0);
if (ret) {
dev_err(&adapter->dev, "failure sending STOP\n");
return -EREMOTEIO;
@@ -153,7 +153,7 @@ static int osif_probe(struct usb_interface *interface,
* Set bus frequency. The frequency is:
* 120,000,000 / ( 16 + 2 * div * 4^prescale).
* Using dev = 52, prescale = 0 give 100KHz */
ret = osif_usb_read(&priv->adapter, OSIFI2C_SET_BIT_RATE, 52, 0,
ret = osif_usb_write(&priv->adapter, OSIFI2C_SET_BIT_RATE, 52, 0,
NULL, 0);
if (ret) {
dev_err(&interface->dev, "failure sending bit rate");

7
drivers/infiniband/hw/mlx5/fs.c
View File

@@ -2136,6 +2136,13 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
if (err)
goto end;
if (obj->ns_type == MLX5_FLOW_NAMESPACE_FDB &&
mlx5_eswitch_mode(dev->mdev->priv.eswitch) !=
MLX5_ESWITCH_OFFLOADS) {
err = -EINVAL;
goto end;
}
uobj->object = obj;
obj->mdev = dev->mdev;
atomic_set(&obj->usecnt, 0);

50
drivers/mmc/host/meson-gx-mmc.c
View File

@@ -165,6 +165,7 @@ struct meson_host {
unsigned int bounce_buf_size;
void *bounce_buf;
void __iomem *bounce_iomem_buf;
dma_addr_t bounce_dma_addr;
struct sd_emmc_desc *descs;
dma_addr_t descs_dma_addr;
@@ -734,6 +735,47 @@ static void meson_mmc_desc_chain_transfer(struct mmc_host *mmc, u32 cmd_cfg)
writel(start, host->regs + SD_EMMC_START);
}
/* local sg copy to buffer version with _to/fromio usage for dram_access_quirk */
static void meson_mmc_copy_buffer(struct meson_host *host, struct mmc_data *data,
size_t buflen, bool to_buffer)
{
unsigned int sg_flags = SG_MITER_ATOMIC;
struct scatterlist *sgl = data->sg;
unsigned int nents = data->sg_len;
struct sg_mapping_iter miter;
unsigned int offset = 0;
if (to_buffer)
sg_flags |= SG_MITER_FROM_SG;
else
sg_flags |= SG_MITER_TO_SG;
sg_miter_start(&miter, sgl, nents, sg_flags);
while ((offset < buflen) && sg_miter_next(&miter)) {
unsigned int len;
len = min(miter.length, buflen - offset);
/* When dram_access_quirk, the bounce buffer is a iomem mapping */
if (host->dram_access_quirk) {
if (to_buffer)
memcpy_toio(host->bounce_iomem_buf + offset, miter.addr, len);
else
memcpy_fromio(miter.addr, host->bounce_iomem_buf + offset, len);
} else {
if (to_buffer)
memcpy(host->bounce_buf + offset, miter.addr, len);
else
memcpy(miter.addr, host->bounce_buf + offset, len);
}
offset += len;
}
sg_miter_stop(&miter);
}
static void meson_mmc_start_cmd(struct mmc_host *mmc, struct mmc_command *cmd)
{
struct meson_host *host = mmc_priv(mmc);
@@ -777,8 +819,7 @@ static void meson_mmc_start_cmd(struct mmc_host *mmc, struct mmc_command *cmd)
if (data->flags & MMC_DATA_WRITE) {
cmd_cfg |= CMD_CFG_DATA_WR;
WARN_ON(xfer_bytes > host->bounce_buf_size);
sg_copy_to_buffer(data->sg, data->sg_len,
host->bounce_buf, xfer_bytes);
meson_mmc_copy_buffer(host, data, xfer_bytes, true);
dma_wmb();
}
@@ -947,8 +988,7 @@ static irqreturn_t meson_mmc_irq_thread(int irq, void *dev_id)
if (meson_mmc_bounce_buf_read(data)) {
xfer_bytes = data->blksz * data->blocks;
WARN_ON(xfer_bytes > host->bounce_buf_size);
sg_copy_from_buffer(data->sg, data->sg_len,
host->bounce_buf, xfer_bytes);
meson_mmc_copy_buffer(host, data, xfer_bytes, false);
}
next_cmd = meson_mmc_get_next_command(cmd);
@@ -1168,7 +1208,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
* instead of the DDR memory
*/
host->bounce_buf_size = SD_EMMC_SRAM_DATA_BUF_LEN;
host->bounce_buf = host->regs + SD_EMMC_SRAM_DATA_BUF_OFF;
host->bounce_iomem_buf = host->regs + SD_EMMC_SRAM_DATA_BUF_OFF;
host->bounce_dma_addr = res->start + SD_EMMC_SRAM_DATA_BUF_OFF;
} else {
/* data bounce buffer */

1
drivers/net/caif/caif_serial.c
View File

@@ -351,6 +351,7 @@ static int ldisc_open(struct tty_struct *tty)
rtnl_lock();
result = register_netdevice(dev);
if (result) {
tty_kref_put(tty);
rtnl_unlock();
free_netdev(dev);
return -ENODEV;

4
drivers/net/ethernet/qlogic/qed/qed_dcbx.c
View File

@@ -1266,9 +1266,11 @@ int qed_dcbx_get_config_params(struct qed_hwfn *p_hwfn,
p_hwfn->p_dcbx_info->set.ver_num |= DCBX_CONFIG_VERSION_STATIC;
p_hwfn->p_dcbx_info->set.enabled = dcbx_info->operational.enabled;
BUILD_BUG_ON(sizeof(dcbx_info->operational.params) !=
sizeof(p_hwfn->p_dcbx_info->set.config.params));
memcpy(&p_hwfn->p_dcbx_info->set.config.params,
&dcbx_info->operational.params,
sizeof(struct qed_dcbx_admin_params));
sizeof(p_hwfn->p_dcbx_info->set.config.params));
p_hwfn->p_dcbx_info->set.config.valid = true;
memcpy(params, &p_hwfn->p_dcbx_info->set, sizeof(struct qed_dcbx_set));

2
drivers/net/ethernet/realtek/r8169_main.c
View File

@@ -1673,7 +1673,7 @@ static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
switch(stringset) {
case ETH_SS_STATS:
memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
memcpy(data, rtl8169_gstrings, sizeof(rtl8169_gstrings));
break;
}
}

2
drivers/net/ethernet/renesas/sh_eth.c
View File

@@ -2287,7 +2287,7 @@ static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
{
switch (stringset) {
case ETH_SS_STATS:
memcpy(data, *sh_eth_gstrings_stats,
memcpy(data, sh_eth_gstrings_stats,
sizeof(sh_eth_gstrings_stats));
break;
}

19
drivers/net/ethernet/xilinx/ll_temac_main.c
View File

@@ -774,12 +774,15 @@ static void temac_start_xmit_done(struct net_device *ndev)
stat = be32_to_cpu(cur_p->app0);
while (stat & STS_CTRL_APP0_CMPLT) {
/* Make sure that the other fields are read after bd is
* released by dma
*/
rmb();
dma_unmap_single(ndev->dev.parent, be32_to_cpu(cur_p->phys),
be32_to_cpu(cur_p->len), DMA_TO_DEVICE);
skb = (struct sk_buff *)ptr_from_txbd(cur_p);
if (skb)
dev_consume_skb_irq(skb);
cur_p->app0 = 0;
cur_p->app1 = 0;
cur_p->app2 = 0;
cur_p->app3 = 0;
@@ -788,6 +791,12 @@ static void temac_start_xmit_done(struct net_device *ndev)
ndev->stats.tx_packets++;
ndev->stats.tx_bytes += be32_to_cpu(cur_p->len);
/* app0 must be visible last, as it is used to flag
* availability of the bd
*/
smp_mb();
cur_p->app0 = 0;
lp->tx_bd_ci++;
if (lp->tx_bd_ci >= lp->tx_bd_num)
lp->tx_bd_ci = 0;
@@ -814,6 +823,9 @@ static inline int temac_check_tx_bd_space(struct temac_local *lp, int num_frag)
if (cur_p->app0)
return NETDEV_TX_BUSY;
/* Make sure to read next bd app0 after this one */
rmb();
tail++;
if (tail >= lp->tx_bd_num)
tail = 0;
@@ -930,6 +942,11 @@ temac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
wmb();
lp->dma_out(lp, TX_TAILDESC_PTR, tail_p); /* DMA start */
if (temac_check_tx_bd_space(lp, MAX_SKB_FRAGS + 1)) {
netdev_info(ndev, "%s -> netif_stop_queue\n", __func__);
netif_stop_queue(ndev);
}
return NETDEV_TX_OK;
}

6
drivers/net/phy/dp83867.c
View File

@@ -792,16 +792,12 @@ static int dp83867_phy_reset(struct phy_device *phydev)
{
int err;
err = phy_write(phydev, DP83867_CTRL, DP83867_SW_RESET);
err = phy_write(phydev, DP83867_CTRL, DP83867_SW_RESTART);
if (err < 0)
return err;
usleep_range(10, 20);
/* After reset FORCE_LINK_GOOD bit is set. Although the
* default value should be unset. Disable FORCE_LINK_GOOD
* for the phy to work properly.
*/
return phy_modify(phydev, MII_DP83867_PHYCTRL,
DP83867_PHYCR_FORCE_LINK_GOOD, 0);
}

2
drivers/net/usb/r8152.c
View File

@@ -8643,7 +8643,7 @@ static void rtl8152_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
switch (stringset) {
case ETH_SS_STATS:
memcpy(data, *rtl8152_gstrings, sizeof(rtl8152_gstrings));
memcpy(data, rtl8152_gstrings, sizeof(rtl8152_gstrings));
break;
}
}

5
drivers/net/wireless/mac80211_hwsim.c
View File

@@ -1623,8 +1623,13 @@ static int mac80211_hwsim_start(struct ieee80211_hw *hw)
static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
data->started = false;
hrtimer_cancel(&data->beacon_timer);
while (!skb_queue_empty(&data->pending))
ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
wiphy_dbg(hw->wiphy, "%s\n", __func__);
}

16
drivers/pci/pci.c
View File

@@ -1874,11 +1874,21 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
int err;
int i, bars = 0;
if (atomic_inc_return(&dev->enable_cnt) > 1) {
pci_update_current_state(dev, dev->current_state);
return 0; /* already enabled */
/*
* Power state could be unknown at this point, either due to a fresh
* boot or a device removal call. So get the current power state
* so that things like MSI message writing will behave as expected
* (e.g. if the device really is in D0 at enable time).
*/
if (dev->pm_cap) {
u16 pmcsr;
pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
}
if (atomic_inc_return(&dev->enable_cnt) > 1)
return 0; /* already enabled */
bridge = pci_upstream_bridge(dev);
if (bridge)
pci_enable_bridge(bridge);

9
drivers/pinctrl/stm32/pinctrl-stm32.c
View File

@@ -1229,7 +1229,7 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
struct device *dev = pctl->dev;
struct resource res;
int npins = STM32_GPIO_PINS_PER_BANK;
int bank_nr, err;
int bank_nr, err, i = 0;
if (!IS_ERR(bank->rstc))
reset_control_deassert(bank->rstc);
@@ -1251,9 +1251,14 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
of_property_read_string(np, "st,bank-name", &bank->gpio_chip.label);
if (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args)) {
if (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, i, &args)) {
bank_nr = args.args[1] / STM32_GPIO_PINS_PER_BANK;
bank->gpio_chip.base = args.args[1];
npins = args.args[2];
while (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3,
++i, &args))
npins += args.args[2];
} else {
bank_nr = pctl->nbanks;
bank->gpio_chip.base = bank_nr * STM32_GPIO_PINS_PER_BANK;

22
drivers/scsi/sd.c
View File

@@ -1389,6 +1389,22 @@ static void sd_uninit_command(struct scsi_cmnd *SCpnt)
}
}
static bool sd_need_revalidate(struct block_device *bdev,
struct scsi_disk *sdkp)
{
if (sdkp->device->removable || sdkp->write_prot) {
if (bdev_check_media_change(bdev))
return true;
}
/*
* Force a full rescan after ioctl(BLKRRPART). While the disk state has
* nothing to do with partitions, BLKRRPART is used to force a full
* revalidate after things like a format for historical reasons.
*/
return test_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);
}
/**
* sd_open - open a scsi disk device
* @bdev: Block device of the scsi disk to open
@@ -1425,10 +1441,8 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
if (!scsi_block_when_processing_errors(sdev))
goto error_out;
if (sdev->removable || sdkp->write_prot) {
if (bdev_check_media_change(bdev))
sd_revalidate_disk(bdev->bd_disk);
}
if (sd_need_revalidate(bdev, sdkp))
sd_revalidate_disk(bdev->bd_disk);
/*
* If the drive is empty, just let the open fail.

2
drivers/scsi/sr.c
View File

@@ -220,6 +220,8 @@ static unsigned int sr_get_events(struct scsi_device *sdev)
return DISK_EVENT_EJECT_REQUEST;
else if (med->media_event_code == 2)
return DISK_EVENT_MEDIA_CHANGE;
else if (med->media_event_code == 3)
return DISK_EVENT_EJECT_REQUEST;
return 0;
}

11
drivers/spi/spi-nxp-fspi.c
View File

@@ -1033,12 +1033,6 @@ static int nxp_fspi_probe(struct platform_device *pdev)
goto err_put_ctrl;
}
/* Clear potential interrupts */
reg = fspi_readl(f, f->iobase + FSPI_INTR);
if (reg)
fspi_writel(f, reg, f->iobase + FSPI_INTR);
/* find the resources - controller memory mapped space */
if (is_acpi_node(f->dev->fwnode))
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
@@ -1076,6 +1070,11 @@ static int nxp_fspi_probe(struct platform_device *pdev)
}
}
/* Clear potential interrupts */
reg = fspi_readl(f, f->iobase + FSPI_INTR);
if (reg)
fspi_writel(f, reg, f->iobase + FSPI_INTR);
/* find the irq */
ret = platform_get_irq(pdev, 0);
if (ret < 0)

54
fs/ceph/addr.c
View File

@@ -1302,6 +1302,45 @@ ceph_find_incompatible(struct page *page)
return NULL;
}
/**
* prep_noread_page - prep a page for writing without reading first
* @page: page being prepared
* @pos: starting position for the write
* @len: length of write
*
* In some cases, write_begin doesn't need to read at all:
* - full page write
* - file is currently zero-length
* - write that lies in a page that is completely beyond EOF
* - write that covers the the page from start to EOF or beyond it
*
* If any of these criteria are met, then zero out the unwritten parts
* of the page and return true. Otherwise, return false.
*/
static bool skip_page_read(struct page *page, loff_t pos, size_t len)
{
struct inode *inode = page->mapping->host;
loff_t i_size = i_size_read(inode);
size_t offset = offset_in_page(pos);
/* Full page write */
if (offset == 0 && len >= PAGE_SIZE)
return true;
/* pos beyond last page in the file */
if (pos - offset >= i_size)
goto zero_out;
/* write that covers the whole page from start to EOF or beyond it */
if (offset == 0 && (pos + len) >= i_size)
goto zero_out;
return false;
zero_out:
zero_user_segments(page, 0, offset, offset + len, PAGE_SIZE);
return true;
}
/*
* We are only allowed to write into/dirty the page if the page is
* clean, or already dirty within the same snap context.
@@ -1315,7 +1354,6 @@ static int ceph_write_begin(struct file *file, struct address_space *mapping,
struct ceph_snap_context *snapc;
struct page *page = NULL;
pgoff_t index = pos >> PAGE_SHIFT;
int pos_in_page = pos & ~PAGE_MASK;
int r = 0;
dout("write_begin file %p inode %p page %p %d~%d\n", file, inode, page, (int)pos, (int)len);
@@ -1350,19 +1388,9 @@ static int ceph_write_begin(struct file *file, struct address_space *mapping,
break;
}
/*
* In some cases we don't need to read at all:
* - full page write
* - write that lies completely beyond EOF
* - write that covers the the page from start to EOF or beyond it
*/
if ((pos_in_page == 0 && len == PAGE_SIZE) ||
(pos >= i_size_read(inode)) ||
(pos_in_page == 0 && (pos + len) >= i_size_read(inode))) {
zero_user_segments(page, 0, pos_in_page,
pos_in_page + len, PAGE_SIZE);
/* No need to read in some cases */
if (skip_page_read(page, pos, len))
break;
}
/*
* We need to read it. If we get back -EINPROGRESS, then the page was

3
fs/ceph/file.c
View File

@@ -578,6 +578,7 @@ static int ceph_finish_async_create(struct inode *dir, struct dentry *dentry,
struct ceph_inode_info *ci = ceph_inode(dir);
struct inode *inode;
struct timespec64 now;
struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
struct ceph_vino vino = { .ino = req->r_deleg_ino,
.snap = CEPH_NOSNAP };
@@ -615,8 +616,10 @@ static int ceph_finish_async_create(struct inode *dir, struct dentry *dentry,
ceph_file_layout_to_legacy(lo, &in.layout);
down_read(&mdsc->snap_rwsem);
ret = ceph_fill_inode(inode, NULL, &iinfo, NULL, req->r_session,
req->r_fmode, NULL);
up_read(&mdsc->snap_rwsem);
if (ret) {
dout("%s failed to fill inode: %d\n", __func__, ret);
ceph_dir_clear_complete(dir);

2
fs/ceph/inode.c
View File

@@ -762,6 +762,8 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page,
bool new_version = false;
bool fill_inline = false;
lockdep_assert_held(&mdsc->snap_rwsem);
dout("%s %p ino %llx.%llx v %llu had %llu\n", __func__,
inode, ceph_vinop(inode), le64_to_cpu(info->version),
ci->i_version);

1
fs/nilfs2/sysfs.c
View File

@@ -1053,6 +1053,7 @@ void nilfs_sysfs_delete_device_group(struct the_nilfs *nilfs)
nilfs_sysfs_delete_superblock_group(nilfs);
nilfs_sysfs_delete_segctor_group(nilfs);
kobject_del(&nilfs->ns_dev_kobj);
kobject_put(&nilfs->ns_dev_kobj);
kfree(nilfs->ns_dev_subgroups);
}

15
include/keys/system_keyring.h
View File

@@ -31,6 +31,7 @@ extern int restrict_link_by_builtin_and_secondary_trusted(
#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
#endif
extern struct pkcs7_message *pkcs7;
#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
extern int mark_hash_blacklisted(const char *hash);
extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
@@ -49,6 +50,20 @@ static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
}
#endif
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
extern int add_key_to_revocation_list(const char *data, size_t size);
extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7);
#else
static inline int add_key_to_revocation_list(const char *data, size_t size)
{
return 0;
}
static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7)
{
return -ENOKEY;
}
#endif
#ifdef CONFIG_IMA_BLACKLIST_KEYRING
extern struct key *ima_blacklist_keyring;

2
include/linux/debug_locks.h
View File

@@ -27,8 +27,10 @@ extern int debug_locks_off(void);
int __ret = 0; \
\
if (!oops_in_progress && unlikely(c)) { \
instrumentation_begin(); \
if (debug_locks_off() && !debug_locks_silent) \
WARN(1, "DEBUG_LOCKS_WARN_ON(%s)", #c); \
instrumentation_end(); \
__ret = 1; \
} \
__ret; \

8
include/linux/huge_mm.h
View File

@@ -297,6 +297,7 @@ struct page *follow_devmap_pud(struct vm_area_struct *vma, unsigned long addr,
extern vm_fault_t do_huge_pmd_numa_page(struct vm_fault *vmf, pmd_t orig_pmd);
extern struct page *huge_zero_page;
extern unsigned long huge_zero_pfn;
static inline bool is_huge_zero_page(struct page *page)
{
@@ -305,7 +306,7 @@ static inline bool is_huge_zero_page(struct page *page)
static inline bool is_huge_zero_pmd(pmd_t pmd)
{
return is_huge_zero_page(pmd_page(pmd));
return READ_ONCE(huge_zero_pfn) == pmd_pfn(pmd) && pmd_present(pmd);
}
static inline bool is_huge_zero_pud(pud_t pud)
@@ -451,6 +452,11 @@ static inline bool is_huge_zero_page(struct page *page)
return false;
}
static inline bool is_huge_zero_pmd(pmd_t pmd)
{
return false;
}
static inline bool is_huge_zero_pud(pud_t pud)
{
return false;

16
include/linux/hugetlb.h
View File

@@ -628,17 +628,6 @@ static inline int hstate_index(struct hstate *h)
return h - hstates;
}
pgoff_t __basepage_index(struct page *page);
/* Return page->index in PAGE_SIZE units */
static inline pgoff_t basepage_index(struct page *page)
{
if (!PageCompound(page))
return page->index;
return __basepage_index(page);
}
extern int dissolve_free_huge_page(struct page *page);
extern int dissolve_free_huge_pages(unsigned long start_pfn,
unsigned long end_pfn);
@@ -871,11 +860,6 @@ static inline int hstate_index(struct hstate *h)
return 0;
}
static inline pgoff_t basepage_index(struct page *page)
{
return page->index;
}
static inline int dissolve_free_huge_page(struct page *page)
{
return 0;

3
include/linux/mm.h
View File

@@ -1648,6 +1648,7 @@ struct zap_details {
struct address_space *check_mapping; /* Check page->mapping if set */
pgoff_t first_index; /* Lowest page->index to unmap */
pgoff_t last_index; /* Highest page->index to unmap */
struct page *single_page; /* Locked page to be unmapped */
};
struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
@@ -1695,6 +1696,7 @@ extern vm_fault_t handle_mm_fault(struct vm_area_struct *vma,
extern int fixup_user_fault(struct mm_struct *mm,
unsigned long address, unsigned int fault_flags,
bool *unlocked);
void unmap_mapping_page(struct page *page);
void unmap_mapping_pages(struct address_space *mapping,
pgoff_t start, pgoff_t nr, bool even_cows);
void unmap_mapping_range(struct address_space *mapping,
@@ -1715,6 +1717,7 @@ static inline int fixup_user_fault(struct mm_struct *mm, unsigned long address,
BUG();
return -EFAULT;
}
static inline void unmap_mapping_page(struct page *page) { }
static inline void unmap_mapping_pages(struct address_space *mapping,
pgoff_t start, pgoff_t nr, bool even_cows) { }
static inline void unmap_mapping_range(struct address_space *mapping,

13
include/linux/mmdebug.h
View File

@@ -37,6 +37,18 @@ void dump_mm(const struct mm_struct *mm);
BUG(); \
} \
} while (0)
#define VM_WARN_ON_ONCE_PAGE(cond, page) ({ \
static bool __section(".data.once") __warned; \
int __ret_warn_once = !!(cond); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
dump_page(page, "VM_WARN_ON_ONCE_PAGE(" __stringify(cond)")");\
__warned = true; \
WARN_ON(1); \
} \
unlikely(__ret_warn_once); \
})
#define VM_WARN_ON(cond) (void)WARN_ON(cond)
#define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
#define VM_WARN_ONCE(cond, format...) (void)WARN_ONCE(cond, format)
@@ -48,6 +60,7 @@ void dump_mm(const struct mm_struct *mm);
#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)
#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ON_ONCE_PAGE(cond, page) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond)
#endif

13
include/linux/pagemap.h
View File

@@ -501,7 +501,7 @@ static inline struct page *read_mapping_page(struct address_space *mapping,
}
/*
* Get index of the page with in radix-tree
* Get index of the page within radix-tree (but not for hugetlb pages).
* (TODO: remove once hugetlb pages will have ->index in PAGE_SIZE)
*/
static inline pgoff_t page_to_index(struct page *page)
@@ -520,15 +520,16 @@ static inline pgoff_t page_to_index(struct page *page)
return pgoff;
}
extern pgoff_t hugetlb_basepage_index(struct page *page);
/*
* Get the offset in PAGE_SIZE.
* (TODO: hugepage should have ->index in PAGE_SIZE)
* Get the offset in PAGE_SIZE (even for hugetlb pages).
* (TODO: hugetlb pages should have ->index in PAGE_SIZE)
*/
static inline pgoff_t page_to_pgoff(struct page *page)
{
if (unlikely(PageHeadHuge(page)))
return page->index << compound_order(page);
if (unlikely(PageHuge(page)))
return hugetlb_basepage_index(page);
return page_to_index(page);
}

1
include/linux/rmap.h
View File

@@ -91,6 +91,7 @@ enum ttu_flags {
TTU_SPLIT_HUGE_PMD = 0x4, /* split huge PMD if any */
TTU_IGNORE_MLOCK = 0x8, /* ignore mlock */
TTU_SYNC = 0x10, /* avoid racy checks with PVMW_SYNC */
TTU_IGNORE_HWPOISON = 0x20, /* corrupted page is recoverable */
TTU_BATCH_FLUSH = 0x40, /* Batch TLB flushes where possible
* and caller guarantees they will

17
include/net/sock.h
View File

@@ -1900,7 +1900,8 @@ static inline u32 net_tx_rndhash(void)
static inline void sk_set_txhash(struct sock *sk)
{
sk->sk_txhash = net_tx_rndhash();
/* This pairs with READ_ONCE() in skb_set_hash_from_sk() */
WRITE_ONCE(sk->sk_txhash, net_tx_rndhash());
}
static inline bool sk_rethink_txhash(struct sock *sk)
@@ -2172,9 +2173,12 @@ static inline void sock_poll_wait(struct file *filp, struct socket *sock,
static inline void skb_set_hash_from_sk(struct sk_buff *skb, struct sock *sk)
{
if (sk->sk_txhash) {
/* This pairs with WRITE_ONCE() in sk_set_txhash() */
u32 txhash = READ_ONCE(sk->sk_txhash);
if (txhash) {
skb->l4_hash = 1;
skb->hash = sk->sk_txhash;
skb->hash = txhash;
}
}
@@ -2232,8 +2236,13 @@ struct sk_buff *sock_dequeue_err_skb(struct sock *sk);
static inline int sock_error(struct sock *sk)
{
int err;
if (likely(!sk->sk_err))
/* Avoid an atomic operation for the common case.
* This is racy since another cpu/thread can change sk_err under us.
*/
if (likely(data_race(!sk->sk_err)))
return 0;
err = xchg(&sk->sk_err, 0);
return -err;
}

3
kernel/dma/swiotlb.c
View File

@@ -667,6 +667,9 @@ void swiotlb_tbl_sync_single(struct device *hwdev, phys_addr_t tlb_addr,
if (orig_addr == INVALID_PHYS_ADDR)
return;
orig_addr += (tlb_addr & (IO_TLB_SIZE - 1)) -
swiotlb_align_offset(hwdev, orig_addr);
switch (target) {
case SYNC_FOR_CPU:
if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL))

3
kernel/futex.c
View File

@@ -35,7 +35,6 @@
#include <linux/jhash.h>
#include <linux/pagemap.h>
#include <linux/syscalls.h>
#include <linux/hugetlb.h>
#include <linux/freezer.h>
#include <linux/memblock.h>
#include <linux/fault-inject.h>
@@ -652,7 +651,7 @@ again:
key->both.offset |= FUT_OFF_INODE; /* inode-based key */
key->shared.i_seq = get_inode_sequence_number(inode);
key->shared.pgoff = basepage_index(tail);
key->shared.pgoff = page_to_pgoff(tail);
rcu_read_unlock();
}

77
kernel/kthread.c
View File

@@ -1044,8 +1044,38 @@ void kthread_flush_work(struct kthread_work *work)
EXPORT_SYMBOL_GPL(kthread_flush_work);
/*
* This function removes the work from the worker queue. Also it makes sure
* that it won't get queued later via the delayed work's timer.
* Make sure that the timer is neither set nor running and could
* not manipulate the work list_head any longer.
*
* The function is called under worker->lock. The lock is temporary
* released but the timer can't be set again in the meantime.
*/
static void kthread_cancel_delayed_work_timer(struct kthread_work *work,
unsigned long *flags)
{
struct kthread_delayed_work *dwork =
container_of(work, struct kthread_delayed_work, work);
struct kthread_worker *worker = work->worker;
/*
* del_timer_sync() must be called to make sure that the timer
* callback is not running. The lock must be temporary released
* to avoid a deadlock with the callback. In the meantime,
* any queuing is blocked by setting the canceling counter.
*/
work->canceling++;
raw_spin_unlock_irqrestore(&worker->lock, *flags);
del_timer_sync(&dwork->timer);
raw_spin_lock_irqsave(&worker->lock, *flags);
work->canceling--;
}
/*
* This function removes the work from the worker queue.
*
* It is called under worker->lock. The caller must make sure that
* the timer used by delayed work is not running, e.g. by calling
* kthread_cancel_delayed_work_timer().
*
* The work might still be in use when this function finishes. See the
* current_work proceed by the worker.
@@ -1053,28 +1083,8 @@ EXPORT_SYMBOL_GPL(kthread_flush_work);
* Return: %true if @work was pending and successfully canceled,
* %false if @work was not pending
*/
static bool __kthread_cancel_work(struct kthread_work *work, bool is_dwork,
unsigned long *flags)
static bool __kthread_cancel_work(struct kthread_work *work)
{
/* Try to cancel the timer if exists. */
if (is_dwork) {
struct kthread_delayed_work *dwork =
container_of(work, struct kthread_delayed_work, work);
struct kthread_worker *worker = work->worker;
/*
* del_timer_sync() must be called to make sure that the timer
* callback is not running. The lock must be temporary released
* to avoid a deadlock with the callback. In the meantime,
* any queuing is blocked by setting the canceling counter.
*/
work->canceling++;
raw_spin_unlock_irqrestore(&worker->lock, *flags);
del_timer_sync(&dwork->timer);
raw_spin_lock_irqsave(&worker->lock, *flags);
work->canceling--;
}
/*
* Try to remove the work from a worker list. It might either
* be from worker->work_list or from worker->delayed_work_list.
@@ -1127,11 +1137,23 @@ bool kthread_mod_delayed_work(struct kthread_worker *worker,
/* Work must not be used with >1 worker, see kthread_queue_work() */
WARN_ON_ONCE(work->worker != worker);
/* Do not fight with another command that is canceling this work. */
/*
* Temporary cancel the work but do not fight with another command
* that is canceling the work as well.
*
* It is a bit tricky because of possible races with another
* mod_delayed_work() and cancel_delayed_work() callers.
*
* The timer must be canceled first because worker->lock is released
* when doing so. But the work can be removed from the queue (list)
* only when it can be queued again so that the return value can
* be used for reference counting.
*/
kthread_cancel_delayed_work_timer(work, &flags);
if (work->canceling)
goto out;
ret = __kthread_cancel_work(work);
ret = __kthread_cancel_work(work, true, &flags);
fast_queue:
__kthread_queue_delayed_work(worker, dwork, delay);
out:
@@ -1153,7 +1175,10 @@ static bool __kthread_cancel_work_sync(struct kthread_work *work, bool is_dwork)
/* Work must not be used with >1 worker, see kthread_queue_work(). */
WARN_ON_ONCE(work->worker != worker);
ret = __kthread_cancel_work(work, is_dwork, &flags);
if (is_dwork)
kthread_cancel_delayed_work_timer(work, &flags);
ret = __kthread_cancel_work(work);
if (worker->current_work != work)
goto out_fast;

4
kernel/locking/lockdep.c
View File

@@ -842,7 +842,7 @@ static int count_matching_names(struct lock_class *new_class)
}
/* used from NMI context -- must be lockless */
static __always_inline struct lock_class *
static noinstr struct lock_class *
look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass)
{
struct lockdep_subclass_key *key;
@@ -850,12 +850,14 @@ look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass)
struct lock_class *class;
if (unlikely(subclass >= MAX_LOCKDEP_SUBCLASSES)) {
instrumentation_begin();
debug_locks_off();
printk(KERN_ERR
"BUG: looking up invalid subclass: %u\n", subclass);
printk(KERN_ERR
"turning off the locking correctness validator.\n");
dump_stack();
instrumentation_end();
return NULL;
}

14
kernel/module.c
View File

@@ -272,9 +272,18 @@ static void module_assert_mutex_or_preempt(void)
#endif
}
#ifdef CONFIG_MODULE_SIG
static bool sig_enforce = IS_ENABLED(CONFIG_MODULE_SIG_FORCE);
module_param(sig_enforce, bool_enable_only, 0644);
void set_module_sig_enforced(void)
{
sig_enforce = true;
}
#else
#define sig_enforce false
#endif
/*
* Export sig_enforce kernel cmdline parameter to allow other subsystems rely
* on that instead of directly to CONFIG_MODULE_SIG_FORCE config.
@@ -285,11 +294,6 @@ bool is_module_sig_enforced(void)
}
EXPORT_SYMBOL(is_module_sig_enforced);
void set_module_sig_enforced(void)
{
sig_enforce = true;
}
/* Block module loading/unloading? */
int modules_disabled = 0;
core_param(nomodule, modules_disabled, bint, 0);

2
lib/debug_locks.c
View File

@@ -36,7 +36,7 @@ EXPORT_SYMBOL_GPL(debug_locks_silent);
/*
* Generic 'turn off all lock debugging' function:
*/
noinstr int debug_locks_off(void)
int debug_locks_off(void)
{
if (debug_locks && __debug_locks_off()) {
if (!debug_locks_silent) {

56
mm/huge_memory.c
View File

@@ -61,6 +61,7 @@ static struct shrinker deferred_split_shrinker;
static atomic_t huge_zero_refcount;
struct page *huge_zero_page __read_mostly;
unsigned long huge_zero_pfn __read_mostly = ~0UL;
bool transparent_hugepage_enabled(struct vm_area_struct *vma)
{
@@ -97,6 +98,7 @@ retry:
__free_pages(zero_page, compound_order(zero_page));
goto retry;
}
WRITE_ONCE(huge_zero_pfn, page_to_pfn(zero_page));
/* We take additional reference here. It will be put back by shrinker */
atomic_set(&huge_zero_refcount, 2);
@@ -146,6 +148,7 @@ static unsigned long shrink_huge_zero_page_scan(struct shrinker *shrink,
if (atomic_cmpxchg(&huge_zero_refcount, 1, 0) == 1) {
struct page *zero_page = xchg(&huge_zero_page, NULL);
BUG_ON(zero_page == NULL);
WRITE_ONCE(huge_zero_pfn, ~0UL);
__free_pages(zero_page, compound_order(zero_page));
return HPAGE_PMD_NR;
}
@@ -2031,7 +2034,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
count_vm_event(THP_SPLIT_PMD);
if (!vma_is_anonymous(vma)) {
_pmd = pmdp_huge_clear_flush_notify(vma, haddr, pmd);
old_pmd = pmdp_huge_clear_flush_notify(vma, haddr, pmd);
/*
* We are going to unmap this huge page. So
* just go ahead and zap it
@@ -2040,16 +2043,25 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
zap_deposited_table(mm, pmd);
if (vma_is_special_huge(vma))
return;
page = pmd_page(_pmd);
if (!PageDirty(page) && pmd_dirty(_pmd))
set_page_dirty(page);
if (!PageReferenced(page) && pmd_young(_pmd))
SetPageReferenced(page);
page_remove_rmap(page, true);
put_page(page);
if (unlikely(is_pmd_migration_entry(old_pmd))) {
swp_entry_t entry;
entry = pmd_to_swp_entry(old_pmd);
page = migration_entry_to_page(entry);
} else {
page = pmd_page(old_pmd);
if (!PageDirty(page) && pmd_dirty(old_pmd))
set_page_dirty(page);
if (!PageReferenced(page) && pmd_young(old_pmd))
SetPageReferenced(page);
page_remove_rmap(page, true);
put_page(page);
}
add_mm_counter(mm, mm_counter_file(page), -HPAGE_PMD_NR);
return;
} else if (pmd_trans_huge(*pmd) && is_huge_zero_pmd(*pmd)) {
}
if (is_huge_zero_pmd(*pmd)) {
/*
* FIXME: Do we want to invalidate secondary mmu by calling
* mmu_notifier_invalidate_range() see comments below inside
@@ -2330,17 +2342,17 @@ void vma_adjust_trans_huge(struct vm_area_struct *vma,
static void unmap_page(struct page *page)
{
enum ttu_flags ttu_flags = TTU_IGNORE_MLOCK |
enum ttu_flags ttu_flags = TTU_IGNORE_MLOCK | TTU_SYNC |
TTU_RMAP_LOCKED | TTU_SPLIT_HUGE_PMD;
bool unmap_success;
VM_BUG_ON_PAGE(!PageHead(page), page);
if (PageAnon(page))
ttu_flags |= TTU_SPLIT_FREEZE;
unmap_success = try_to_unmap(page, ttu_flags);
VM_BUG_ON_PAGE(!unmap_success, page);
try_to_unmap(page, ttu_flags);
VM_WARN_ON_ONCE_PAGE(page_mapped(page), page);
}
static void remap_page(struct page *page, unsigned int nr)
@@ -2630,7 +2642,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
struct deferred_split *ds_queue = get_deferred_split_queue(head);
struct anon_vma *anon_vma = NULL;
struct address_space *mapping = NULL;
int count, mapcount, extra_pins, ret;
int extra_pins, ret;
unsigned long flags;
pgoff_t end;
@@ -2690,7 +2702,6 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
}
unmap_page(head);
VM_BUG_ON_PAGE(compound_mapcount(head), head);
/* prevent PageLRU to go away from under us, and freeze lru stats */
spin_lock_irqsave(&pgdata->lru_lock, flags);
@@ -2709,9 +2720,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
/* Prevent deferred_split_scan() touching ->_refcount */
spin_lock(&ds_queue->split_queue_lock);
count = page_count(head);
mapcount = total_mapcount(head);
if (!mapcount && page_ref_freeze(head, 1 + extra_pins)) {
if (page_ref_freeze(head, 1 + extra_pins)) {
if (!list_empty(page_deferred_list(head))) {
ds_queue->split_queue_len--;
list_del(page_deferred_list(head));
@@ -2727,16 +2736,9 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
__split_huge_page(page, list, end, flags);
ret = 0;
} else {
if (IS_ENABLED(CONFIG_DEBUG_VM) && mapcount) {
pr_alert("total_mapcount: %u, page_count(): %u\n",
mapcount, count);
if (PageTail(page))
dump_page(head, NULL);
dump_page(page, "total_mapcount(head) > 0");
BUG();
}
spin_unlock(&ds_queue->split_queue_lock);
fail: if (mapping)
fail:
if (mapping)
xa_unlock(&mapping->i_pages);
spin_unlock_irqrestore(&pgdata->lru_lock, flags);
remap_page(head, thp_nr_pages(head));

5
mm/hugetlb.c
View File

@@ -1635,15 +1635,12 @@ struct address_space *hugetlb_page_mapping_lock_write(struct page *hpage)
return NULL;
}
pgoff_t __basepage_index(struct page *page)
pgoff_t hugetlb_basepage_index(struct page *page)
{
struct page *page_head = compound_head(page);
pgoff_t index = page_index(page_head);
unsigned long compound_idx;
if (!PageHuge(page_head))
return page_index(page);
if (compound_order(page_head) >= MAX_ORDER)
compound_idx = page_to_pfn(page) - page_to_pfn(page_head);
else

53
mm/internal.h
View File

@@ -379,27 +379,52 @@ static inline void mlock_migrate_page(struct page *newpage, struct page *page)
extern pmd_t maybe_pmd_mkwrite(pmd_t pmd, struct vm_area_struct *vma);
/*
* At what user virtual address is page expected in @vma?
* At what user virtual address is page expected in vma?
* Returns -EFAULT if all of the page is outside the range of vma.
* If page is a compound head, the entire compound page is considered.
*/
static inline unsigned long
__vma_address(struct page *page, struct vm_area_struct *vma)
{
pgoff_t pgoff = page_to_pgoff(page);
return vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT);
}
static inline unsigned long
vma_address(struct page *page, struct vm_area_struct *vma)
{
unsigned long start, end;
pgoff_t pgoff;
unsigned long address;
start = __vma_address(page, vma);
end = start + thp_size(page) - PAGE_SIZE;
VM_BUG_ON_PAGE(PageKsm(page), page); /* KSM page->index unusable */
pgoff = page_to_pgoff(page);
if (pgoff >= vma->vm_pgoff) {
address = vma->vm_start +
((pgoff - vma->vm_pgoff) << PAGE_SHIFT);
/* Check for address beyond vma (or wrapped through 0?) */
if (address < vma->vm_start || address >= vma->vm_end)
address = -EFAULT;
} else if (PageHead(page) &&
pgoff + compound_nr(page) - 1 >= vma->vm_pgoff) {
/* Test above avoids possibility of wrap to 0 on 32-bit */
address = vma->vm_start;
} else {
address = -EFAULT;
}
return address;
}
/* page should be within @vma mapping range */
VM_BUG_ON_VMA(end < vma->vm_start || start >= vma->vm_end, vma);
/*
* Then at what user virtual address will none of the page be found in vma?
* Assumes that vma_address() already returned a good starting address.
* If page is a compound head, the entire compound page is considered.
*/
static inline unsigned long
vma_address_end(struct page *page, struct vm_area_struct *vma)
{
pgoff_t pgoff;
unsigned long address;
return max(start, vma->vm_start);
VM_BUG_ON_PAGE(PageKsm(page), page); /* KSM page->index unusable */
pgoff = page_to_pgoff(page) + compound_nr(page);
address = vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT);
/* Check for address beyond vma (or wrapped through 0?) */
if (address < vma->vm_start || address > vma->vm_end)
address = vma->vm_end;
return address;
}
static inline struct file *maybe_unlock_mmap_for_io(struct vm_fault *vmf,

41
mm/memory.c
View File

@@ -1355,7 +1355,18 @@ static inline unsigned long zap_pmd_range(struct mmu_gather *tlb,
else if (zap_huge_pmd(tlb, vma, pmd, addr))
goto next;
/* fall through */
} else if (details && details->single_page &&
PageTransCompound(details->single_page) &&
next - addr == HPAGE_PMD_SIZE && pmd_none(*pmd)) {
spinlock_t *ptl = pmd_lock(tlb->mm, pmd);
/*
* Take and drop THP pmd lock so that we cannot return
* prematurely, while zap_huge_pmd() has cleared *pmd,
* but not yet decremented compound_mapcount().
*/
spin_unlock(ptl);
}
/*
* Here there can be other concurrent MADV_DONTNEED or
* trans huge page faults running, and if the pmd is
@@ -3185,6 +3196,36 @@ static inline void unmap_mapping_range_tree(struct rb_root_cached *root,
}
}
/**
* unmap_mapping_page() - Unmap single page from processes.
* @page: The locked page to be unmapped.
*
* Unmap this page from any userspace process which still has it mmaped.
* Typically, for efficiency, the range of nearby pages has already been
* unmapped by unmap_mapping_pages() or unmap_mapping_range(). But once
* truncation or invalidation holds the lock on a page, it may find that
* the page has been remapped again: and then uses unmap_mapping_page()
* to unmap it finally.
*/
void unmap_mapping_page(struct page *page)
{
struct address_space *mapping = page->mapping;
struct zap_details details = { };
VM_BUG_ON(!PageLocked(page));
VM_BUG_ON(PageTail(page));
details.check_mapping = mapping;
details.first_index = page->index;
details.last_index = page->index + thp_nr_pages(page) - 1;
details.single_page = page;
i_mmap_lock_write(mapping);
if (unlikely(!RB_EMPTY_ROOT(&mapping->i_mmap.rb_root)))
unmap_mapping_range_tree(&mapping->i_mmap, &details);
i_mmap_unlock_write(mapping);
}
/**
* unmap_mapping_pages() - Unmap pages from processes.
* @mapping: The address space containing pages to be unmapped.

1
mm/migrate.c
View File

@@ -326,6 +326,7 @@ void __migration_entry_wait(struct mm_struct *mm, pte_t *ptep,
goto out;
page = migration_entry_to_page(entry);
page = compound_head(page);
/*
* Once page cache replacement of page migration started, page_count

166
mm/page_vma_mapped.c
View File

@@ -115,6 +115,13 @@ static bool check_pte(struct page_vma_mapped_walk *pvmw)
return pfn_is_match(pvmw->page, pfn);
}
static void step_forward(struct page_vma_mapped_walk *pvmw, unsigned long size)
{
pvmw->address = (pvmw->address + size) & ~(size - 1);
if (!pvmw->address)
pvmw->address = ULONG_MAX;
}
/**
* page_vma_mapped_walk - check if @pvmw->page is mapped in @pvmw->vma at
* @pvmw->address
@@ -143,6 +150,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw)
{
struct mm_struct *mm = pvmw->vma->vm_mm;
struct page *page = pvmw->page;
unsigned long end;
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
@@ -152,10 +160,11 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw)
if (pvmw->pmd && !pvmw->pte)
return not_found(pvmw);
if (pvmw->pte)
goto next_pte;
if (unlikely(PageHuge(page))) {
/* The only possible mapping was handled on last iteration */
if (pvmw->pte)
return not_found(pvmw);
if (unlikely(PageHuge(pvmw->page))) {
/* when pud is not present, pte will be NULL */
pvmw->pte = huge_pte_offset(mm, pvmw->address, page_size(page));
if (!pvmw->pte)
@@ -167,78 +176,108 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw)
return not_found(pvmw);
return true;
}
restart:
pgd = pgd_offset(mm, pvmw->address);
if (!pgd_present(*pgd))
return false;
p4d = p4d_offset(pgd, pvmw->address);
if (!p4d_present(*p4d))
return false;
pud = pud_offset(p4d, pvmw->address);
if (!pud_present(*pud))
return false;
pvmw->pmd = pmd_offset(pud, pvmw->address);
/*
* Make sure the pmd value isn't cached in a register by the
* compiler and used as a stale value after we've observed a
* subsequent update.
*/
pmde = READ_ONCE(*pvmw->pmd);
if (pmd_trans_huge(pmde) || is_pmd_migration_entry(pmde)) {
pvmw->ptl = pmd_lock(mm, pvmw->pmd);
if (likely(pmd_trans_huge(*pvmw->pmd))) {
if (pvmw->flags & PVMW_MIGRATION)
return not_found(pvmw);
if (pmd_page(*pvmw->pmd) != page)
return not_found(pvmw);
return true;
} else if (!pmd_present(*pvmw->pmd)) {
if (thp_migration_supported()) {
if (!(pvmw->flags & PVMW_MIGRATION))
return not_found(pvmw);
if (is_migration_entry(pmd_to_swp_entry(*pvmw->pmd))) {
swp_entry_t entry = pmd_to_swp_entry(*pvmw->pmd);
if (migration_entry_to_page(entry) != page)
return not_found(pvmw);
return true;
}
/*
* Seek to next pte only makes sense for THP.
* But more important than that optimization, is to filter out
* any PageKsm page: whose page->index misleads vma_address()
* and vma_address_end() to disaster.
*/
end = PageTransCompound(page) ?
vma_address_end(page, pvmw->vma) :
pvmw->address + PAGE_SIZE;
if (pvmw->pte)
goto next_pte;
restart:
do {
pgd = pgd_offset(mm, pvmw->address);
if (!pgd_present(*pgd)) {
step_forward(pvmw, PGDIR_SIZE);
continue;
}
p4d = p4d_offset(pgd, pvmw->address);
if (!p4d_present(*p4d)) {
step_forward(pvmw, P4D_SIZE);
continue;
}
pud = pud_offset(p4d, pvmw->address);
if (!pud_present(*pud)) {
step_forward(pvmw, PUD_SIZE);
continue;
}
pvmw->pmd = pmd_offset(pud, pvmw->address);
/*
* Make sure the pmd value isn't cached in a register by the
* compiler and used as a stale value after we've observed a
* subsequent update.
*/
pmde = READ_ONCE(*pvmw->pmd);
if (pmd_trans_huge(pmde) || is_pmd_migration_entry(pmde)) {
pvmw->ptl = pmd_lock(mm, pvmw->pmd);
pmde = *pvmw->pmd;
if (likely(pmd_trans_huge(pmde))) {
if (pvmw->flags & PVMW_MIGRATION)
return not_found(pvmw);
if (pmd_page(pmde) != page)
return not_found(pvmw);
return true;
}
if (!pmd_present(pmde)) {
swp_entry_t entry;
if (!thp_migration_supported() ||
!(pvmw->flags & PVMW_MIGRATION))
return not_found(pvmw);
entry = pmd_to_swp_entry(pmde);
if (!is_migration_entry(entry) ||
migration_entry_to_page(entry) != page)
return not_found(pvmw);
return true;
}
return not_found(pvmw);
} else {
/* THP pmd was split under us: handle on pte level */
spin_unlock(pvmw->ptl);
pvmw->ptl = NULL;
} else if (!pmd_present(pmde)) {
/*
* If PVMW_SYNC, take and drop THP pmd lock so that we
* cannot return prematurely, while zap_huge_pmd() has
* cleared *pmd but not decremented compound_mapcount().
*/
if ((pvmw->flags & PVMW_SYNC) &&
PageTransCompound(page)) {
spinlock_t *ptl = pmd_lock(mm, pvmw->pmd);
spin_unlock(ptl);
}
step_forward(pvmw, PMD_SIZE);
continue;
}
} else if (!pmd_present(pmde)) {
return false;
}
if (!map_pte(pvmw))
goto next_pte;
while (1) {
if (!map_pte(pvmw))
goto next_pte;
this_pte:
if (check_pte(pvmw))
return true;
next_pte:
/* Seek to next pte only makes sense for THP */
if (!PageTransHuge(pvmw->page) || PageHuge(pvmw->page))
return not_found(pvmw);
do {
pvmw->address += PAGE_SIZE;
if (pvmw->address >= pvmw->vma->vm_end ||
pvmw->address >=
__vma_address(pvmw->page, pvmw->vma) +
thp_size(pvmw->page))
if (pvmw->address >= end)
return not_found(pvmw);
/* Did we cross page table boundary? */
if (pvmw->address % PMD_SIZE == 0) {
pte_unmap(pvmw->pte);
if ((pvmw->address & (PMD_SIZE - PAGE_SIZE)) == 0) {
if (pvmw->ptl) {
spin_unlock(pvmw->ptl);
pvmw->ptl = NULL;
}
pte_unmap(pvmw->pte);
pvmw->pte = NULL;
goto restart;
} else {
pvmw->pte++;
}
pvmw->pte++;
if ((pvmw->flags & PVMW_SYNC) && !pvmw->ptl) {
pvmw->ptl = pte_lockptr(mm, pvmw->pmd);
spin_lock(pvmw->ptl);
}
} while (pte_none(*pvmw->pte));
@@ -246,7 +285,10 @@ next_pte:
pvmw->ptl = pte_lockptr(mm, pvmw->pmd);
spin_lock(pvmw->ptl);
}
}
goto this_pte;
} while (pvmw->address < end);
return false;
}
/**
@@ -265,14 +307,10 @@ int page_mapped_in_vma(struct page *page, struct vm_area_struct *vma)
.vma = vma,
.flags = PVMW_SYNC,
};
unsigned long start, end;
start = __vma_address(page, vma);
end = start + thp_size(page) - PAGE_SIZE;
if (unlikely(end < vma->vm_start || start >= vma->vm_end))
pvmw.address = vma_address(page, vma);
if (pvmw.address == -EFAULT)
return 0;
pvmw.address = max(start, vma->vm_start);
if (!page_vma_mapped_walk(&pvmw))
return 0;
page_vma_mapped_walk_done(&pvmw);

4
mm/pgtable-generic.c
View File

@@ -135,8 +135,8 @@ pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
{
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
VM_BUG_ON((pmd_present(*pmdp) && !pmd_trans_huge(*pmdp) &&
!pmd_devmap(*pmdp)) || !pmd_present(*pmdp));
VM_BUG_ON(pmd_present(*pmdp) && !pmd_trans_huge(*pmdp) &&
!pmd_devmap(*pmdp));
pmd = pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return pmd;

50
mm/rmap.c
View File

@@ -700,7 +700,6 @@ static bool should_defer_flush(struct mm_struct *mm, enum ttu_flags flags)
*/
unsigned long page_address_in_vma(struct page *page, struct vm_area_struct *vma)
{
unsigned long address;
if (PageAnon(page)) {
struct anon_vma *page__anon_vma = page_anon_vma(page);
/*
@@ -710,15 +709,13 @@ unsigned long page_address_in_vma(struct page *page, struct vm_area_struct *vma)
if (!vma->anon_vma || !page__anon_vma ||
vma->anon_vma->root != page__anon_vma->root)
return -EFAULT;
} else if (page->mapping) {
if (!vma->vm_file || vma->vm_file->f_mapping != page->mapping)
return -EFAULT;
} else
} else if (!vma->vm_file) {
return -EFAULT;
address = __vma_address(page, vma);
if (unlikely(address < vma->vm_start || address >= vma->vm_end))
} else if (vma->vm_file->f_mapping != compound_head(page)->mapping) {
return -EFAULT;
return address;
}
return vma_address(page, vma);
}
pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address)
@@ -912,7 +909,7 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
*/
mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_PAGE,
0, vma, vma->vm_mm, address,
min(vma->vm_end, address + page_size(page)));
vma_address_end(page, vma));
mmu_notifier_invalidate_range_start(&range);
while (page_vma_mapped_walk(&pvmw)) {
@@ -1385,6 +1382,15 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
struct mmu_notifier_range range;
enum ttu_flags flags = (enum ttu_flags)(long)arg;
/*
* When racing against e.g. zap_pte_range() on another cpu,
* in between its ptep_get_and_clear_full() and page_remove_rmap(),
* try_to_unmap() may return false when it is about to become true,
* if page table locking is skipped: use TTU_SYNC to wait for that.
*/
if (flags & TTU_SYNC)
pvmw.flags = PVMW_SYNC;
/* munlock has nothing to gain from examining un-locked vmas */
if ((flags & TTU_MUNLOCK) && !(vma->vm_flags & VM_LOCKED))
return true;
@@ -1406,9 +1412,10 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
* Note that the page can not be free in this function as call of
* try_to_unmap() must hold a reference on the page.
*/
range.end = PageKsm(page) ?
address + PAGE_SIZE : vma_address_end(page, vma);
mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm,
address,
min(vma->vm_end, address + page_size(page)));
address, range.end);
if (PageHuge(page)) {
/*
* If sharing is possible, start and end will be adjusted
@@ -1716,9 +1723,9 @@ static bool invalid_migration_vma(struct vm_area_struct *vma, void *arg)
return vma_is_temporary_stack(vma);
}
static int page_mapcount_is_zero(struct page *page)
static int page_not_mapped(struct page *page)
{
return !total_mapcount(page);
return !page_mapped(page);
}
/**
@@ -1736,7 +1743,7 @@ bool try_to_unmap(struct page *page, enum ttu_flags flags)
struct rmap_walk_control rwc = {
.rmap_one = try_to_unmap_one,
.arg = (void *)flags,
.done = page_mapcount_is_zero,
.done = page_not_mapped,
.anon_lock = page_lock_anon_vma_read,
};
@@ -1757,14 +1764,15 @@ bool try_to_unmap(struct page *page, enum ttu_flags flags)
else
rmap_walk(page, &rwc);
return !page_mapcount(page) ? true : false;
/*
* When racing against e.g. zap_pte_range() on another cpu,
* in between its ptep_get_and_clear_full() and page_remove_rmap(),
* try_to_unmap() may return false when it is about to become true,
* if page table locking is skipped: use TTU_SYNC to wait for that.
*/
return !page_mapcount(page);
}
static int page_not_mapped(struct page *page)
{
return !page_mapped(page);
};
/**
* try_to_munlock - try to munlock a page
* @page: the page to be munlocked
@@ -1859,6 +1867,7 @@ static void rmap_walk_anon(struct page *page, struct rmap_walk_control *rwc,
struct vm_area_struct *vma = avc->vma;
unsigned long address = vma_address(page, vma);
VM_BUG_ON_VMA(address == -EFAULT, vma);
cond_resched();
if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg))
@@ -1913,6 +1922,7 @@ static void rmap_walk_file(struct page *page, struct rmap_walk_control *rwc,
pgoff_start, pgoff_end) {
unsigned long address = vma_address(page, vma);
VM_BUG_ON_VMA(address == -EFAULT, vma);
cond_resched();
if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg))

43
mm/truncate.c
View File

@@ -173,13 +173,10 @@ void do_invalidatepage(struct page *page, unsigned int offset,
* its lock, b) when a concurrent invalidate_mapping_pages got there first and
* c) when tmpfs swizzles a page between a tmpfs inode and swapper_space.
*/
static void
truncate_cleanup_page(struct address_space *mapping, struct page *page)
static void truncate_cleanup_page(struct page *page)
{
if (page_mapped(page)) {
unsigned int nr = thp_nr_pages(page);
unmap_mapping_pages(mapping, page->index, nr, false);
}
if (page_mapped(page))
unmap_mapping_page(page);
if (page_has_private(page))
do_invalidatepage(page, 0, thp_size(page));
@@ -224,7 +221,7 @@ int truncate_inode_page(struct address_space *mapping, struct page *page)
if (page->mapping != mapping)
return -EIO;
truncate_cleanup_page(mapping, page);
truncate_cleanup_page(page);
delete_from_page_cache(page);
return 0;
}
@@ -362,7 +359,7 @@ void truncate_inode_pages_range(struct address_space *mapping,
pagevec_add(&locked_pvec, page);
}
for (i = 0; i < pagevec_count(&locked_pvec); i++)
truncate_cleanup_page(mapping, locked_pvec.pages[i]);
truncate_cleanup_page(locked_pvec.pages[i]);
delete_from_page_cache_batch(mapping, &locked_pvec);
for (i = 0; i < pagevec_count(&locked_pvec); i++)
unlock_page(locked_pvec.pages[i]);
@@ -737,6 +734,16 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
continue;
}
if (!did_range_unmap && page_mapped(page)) {
/*
* If page is mapped, before taking its lock,
* zap the rest of the file in one hit.
*/
unmap_mapping_pages(mapping, index,
(1 + end - index), false);
did_range_unmap = 1;
}
lock_page(page);
WARN_ON(page_to_index(page) != index);
if (page->mapping != mapping) {
@@ -744,23 +751,11 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
continue;
}
wait_on_page_writeback(page);
if (page_mapped(page)) {
if (!did_range_unmap) {
/*
* Zap the rest of the file in one hit.
*/
unmap_mapping_pages(mapping, index,
(1 + end - index), false);
did_range_unmap = 1;
} else {
/*
* Just zap this page
*/
unmap_mapping_pages(mapping, index,
1, false);
}
}
if (page_mapped(page))
unmap_mapping_page(page);
BUG_ON(page_mapped(page));
ret2 = do_launder_page(mapping, page);
if (ret2 == 0) {
if (!invalidate_complete_page2(mapping, page))

10
net/ethtool/ioctl.c
View File

@@ -1421,7 +1421,7 @@ static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
if (eeprom.offset + eeprom.len > total_len)
return -EINVAL;
data = kmalloc(PAGE_SIZE, GFP_USER);
data = kzalloc(PAGE_SIZE, GFP_USER);
if (!data)
return -ENOMEM;
@@ -1486,7 +1486,7 @@ static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
return -EINVAL;
data = kmalloc(PAGE_SIZE, GFP_USER);
data = kzalloc(PAGE_SIZE, GFP_USER);
if (!data)
return -ENOMEM;
@@ -1765,7 +1765,7 @@ static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
return -EFAULT;
test.len = test_len;
data = kmalloc_array(test_len, sizeof(u64), GFP_USER);
data = kcalloc(test_len, sizeof(u64), GFP_USER);
if (!data)
return -ENOMEM;
@@ -2281,7 +2281,7 @@ static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
ret = ethtool_tunable_valid(&tuna);
if (ret)
return ret;
data = kmalloc(tuna.len, GFP_USER);
data = kzalloc(tuna.len, GFP_USER);
if (!data)
return -ENOMEM;
ret = ops->get_tunable(dev, &tuna, data);
@@ -2473,7 +2473,7 @@ static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
ret = ethtool_phy_tunable_valid(&tuna);
if (ret)
return ret;
data = kmalloc(tuna.len, GFP_USER);
data = kzalloc(tuna.len, GFP_USER);
if (!data)
return -ENOMEM;
if (phy_drv_tunable) {

4
net/ipv4/af_inet.c
View File

@@ -572,7 +572,7 @@ int inet_dgram_connect(struct socket *sock, struct sockaddr *uaddr,
return err;
}
if (!inet_sk(sk)->inet_num && inet_autobind(sk))
if (data_race(!inet_sk(sk)->inet_num) && inet_autobind(sk))
return -EAGAIN;
return sk->sk_prot->connect(sk, uaddr, addr_len);
}
@@ -799,7 +799,7 @@ int inet_send_prepare(struct sock *sk)
sock_rps_record_flow(sk);
/* We may need to bind the socket. */
if (!inet_sk(sk)->inet_num && !sk->sk_prot->no_autobind &&
if (data_race(!inet_sk(sk)->inet_num) && !sk->sk_prot->no_autobind &&
inet_autobind(sk))
return -EAGAIN;

2
net/ipv4/devinet.c
View File

@@ -1989,7 +1989,7 @@ static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla)
return -EAFNOSUPPORT;
if (nla_parse_nested_deprecated(tb, IFLA_INET_MAX, nla, NULL, NULL) < 0)
BUG();
return -EINVAL;
if (tb[IFLA_INET_CONF]) {
nla_for_each_nested(a, tb[IFLA_INET_CONF], rem)

12
net/ipv4/ping.c
View File

@@ -952,6 +952,7 @@ bool ping_rcv(struct sk_buff *skb)
struct sock *sk;
struct net *net = dev_net(skb->dev);
struct icmphdr *icmph = icmp_hdr(skb);
bool rc = false;
/* We assume the packet has already been checked by icmp_rcv */
@@ -966,14 +967,15 @@ bool ping_rcv(struct sk_buff *skb)
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
pr_debug("rcv on socket %p\n", sk);
if (skb2)
ping_queue_rcv_skb(sk, skb2);
if (skb2 && !ping_queue_rcv_skb(sk, skb2))
rc = true;
sock_put(sk);
return true;
}
pr_debug("no socket, dropping\n");
return false;
if (!rc)
pr_debug("no socket, dropping\n");
return rc;
}
EXPORT_SYMBOL_GPL(ping_rcv);

2
net/ipv6/addrconf.c
View File

@@ -5799,7 +5799,7 @@ static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla)
return -EAFNOSUPPORT;
if (nla_parse_nested_deprecated(tb, IFLA_INET6_MAX, nla, NULL, NULL) < 0)
BUG();
return -EINVAL;
if (tb[IFLA_INET6_TOKEN]) {
err = inet6_set_iftoken(idev, nla_data(tb[IFLA_INET6_TOKEN]));

2
net/mac80211/ieee80211_i.h
View File

@@ -1445,7 +1445,7 @@ ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
if (WARN_ON_ONCE(!chanctx_conf)) {
if (!chanctx_conf) {
rcu_read_unlock();
return NULL;
}

8
net/mac80211/mlme.c
View File

@@ -4019,10 +4019,14 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
if (elems.mbssid_config_ie)
bss_conf->profile_periodicity =
elems.mbssid_config_ie->profile_periodicity;
else
bss_conf->profile_periodicity = 0;
if (elems.ext_capab_len >= 11 &&
(elems.ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
bss_conf->ema_ap = true;
else
bss_conf->ema_ap = false;
/* continue assoc process */
ifmgd->assoc_data->timeout = jiffies;
@@ -5749,12 +5753,16 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
beacon_ies->data, beacon_ies->len);
if (elem && elem->datalen >= 3)
sdata->vif.bss_conf.profile_periodicity = elem->data[2];
else
sdata->vif.bss_conf.profile_periodicity = 0;
elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
beacon_ies->data, beacon_ies->len);
if (elem && elem->datalen >= 11 &&
(elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
sdata->vif.bss_conf.ema_ap = true;
else
sdata->vif.bss_conf.ema_ap = false;
} else {
assoc_data->timeout = jiffies;
assoc_data->timeout_started = true;

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