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df45a55788286c541449d82ee09fef3ac5ff77a1
linux/arch/powerpc/kernel
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Christophe Leroy df45a55788 powerpc/ftrace: Add recursion protection in prepare_ftrace_return() 
The function_graph_enter() does not provide any recursion protection.

Add a protection in prepare_ftrace_return() in case
function_graph_enter() calls something that gets
function graph traced.

Fixes: 830213786c ("powerpc/ftrace: directly call of function graph tracer by ftrace caller")
Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/74edf2ff0a60e66b0d9225a137100a86a0557032.1644949750.git.christophe.leroy@csgroup.eu
2022-02-16 23:09:47 +11:00
..
ptrace
powerpc: Use the newly added is_tsk_32bit_task() macro
2022-02-12 22:47:42 +11:00
syscalls
mm/mempolicy: wire up syscall set_mempolicy_home_node
2022-01-15 16:30:30 +02:00
trace
powerpc/ftrace: Add recursion protection in prepare_ftrace_return()
2022-02-16 23:09:47 +11:00
vdso
powerpc/vdso: Move cvdso_call macro into gettimeofday.S
2022-02-12 22:47:44 +11:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
align.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
asm-offsets.c
powerpc/ftrace: Add support for livepatch to PPC32
2022-02-07 21:03:10 +11:00
audit.c
Revert "powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC"
2021-10-27 22:30:32 +11:00
btext.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
cacheinfo.c
powerpc/cacheinfo: use default_groups in kobj_type
2022-01-05 10:58:23 +11:00
cacheinfo.h
powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild
2019-06-15 16:52:06 +10:00
compat_audit.c
Revert "powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC"
2021-10-27 22:30:32 +11:00
cpu_setup_6xx.S
powerpc/32: Blacklist functions running with MMU disabled for kprobe
2020-06-02 20:59:11 +10:00
cpu_setup_44x.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cpu_setup_fsl_booke.S
powerpc: Retire e200 core (mpc555x processor)
2020-12-05 21:49:18 +11:00
cpu_setup_pa6t.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
cpu_setup_power.c
powerpc/64s: Always set PMU control registers to frozen/disabled when not in use
2021-11-24 21:08:57 +11:00
cpu_setup_ppc970.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cputable.c
arch: powerpc: Stop building and using oprofile
2021-01-29 10:05:51 +05:30
crash_dump.c
powerpc: Don't use 'struct ppc_inst' to reference instruction location
2021-06-17 00:09:00 +10:00
dawr.c
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
dbell.c
powerpc/64s/interrupt: Don't enable MSR[EE] in irq handlers unless perf is in use
2021-12-16 21:31:45 +11:00
dma-iommu.c
powerpc/iommu: Report the correct most efficient DMA mask for PCI devices
2021-09-30 17:10:17 +10:00
dma-mask.c
dma-mapping, powerpc: simplify the arch dma_set_mask override
2019-02-18 22:41:03 +11:00
dma-swiotlb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dt_cpu_ftrs.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
early_32.c
powerpc/fsl_booke/32: implement KASLR infrastructure
2019-11-13 19:27:40 +11:00
eeh_cache.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
eeh_driver.c
powerpc/eeh: Use a goto for recovery failures
2021-11-25 11:25:31 +11:00
eeh_event.c
powerpc/eeh: Fix build with STACKTRACE=n
2019-09-14 00:01:14 +10:00
eeh_pe.c
powerpc/eeh: Delete eeh_pe->config_addr
2020-10-07 22:34:47 +11:00
eeh_sysfs.c
powerpc/eeh: Pass eeh_dev to eeh_ops->resume_notify()
2020-07-26 23:34:20 +10:00
eeh.c
Merge tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2021-11-06 14:36:12 -07:00
entry_32.S
powerpc/config: Add CONFIG_BOOKE_OR_40x
2021-12-09 22:41:19 +11:00
entry_64.S
powerpc/64s: Move hash MMU support code under CONFIG_PPC_64S_HASH_MMU
2021-12-09 22:41:13 +11:00
epapr_hcalls.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
epapr_paravirt.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
exceptions-64e.S
powerpc: flexible GPR range save/restore macros
2021-11-29 23:15:20 +11:00
exceptions-64s.S
powerpc/64/asm: Do not reassign labels
2021-12-23 22:35:12 +11:00
fadump.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
firmware.c
powerpc: fix unbalanced node refcount in check_kvm_guest()
2021-10-09 00:15:59 +11:00
fpu.S
powerpc/64s/interrupt: handle MSR EE and RI in interrupt entry wrapper
2021-12-16 21:31:45 +11:00
fsl_booke_entry_mapping.S
powerpc/booke: Avoid link stack corruption in several places
2021-08-25 13:35:47 +10:00
head_8xx.S
powerpc/32: Remove _ENTRY() macro
2022-02-07 21:03:10 +11:00
head_32.h
Merge tag 'powerpc-5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2022-01-14 15:17:26 +01:00
head_40x.S
powerpc/32: Remove _ENTRY() macro
2022-02-07 21:03:10 +11:00
head_44x.S
powerpc/32: Remove _ENTRY() macro
2022-02-07 21:03:10 +11:00
head_64.S
powerpc/64/asm: Do not reassign labels
2021-12-23 22:35:12 +11:00
head_book3s_32.S
powerpc/32: Remove _ENTRY() macro
2022-02-07 21:03:10 +11:00
head_booke.h
powerpc: flexible GPR range save/restore macros
2021-11-29 23:15:20 +11:00
head_fsl_booke.S
powerpc/32: Remove _ENTRY() macro
2022-02-07 21:03:10 +11:00
hw_breakpoint_constraints.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
hw_breakpoint.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
idle_6xx.S
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
idle_book3e.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
idle_book3s.S
powerpc/idle: Don't corrupt back chain when going idle
2021-10-20 21:37:58 +11:00
idle_e500.S
powerpc/32: Return directly from power_save_ppc32_restore()
2021-03-29 13:22:10 +11:00
idle.c
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
ima_arch.c
powerpc/ima: Fix secure boot rules in ima arch policy
2020-05-07 17:25:54 +10:00
interrupt_64.S
powerpc/64s: Mask SRR0 before checking against the masked NIP
2022-01-18 10:25:18 +11:00
interrupt.c
Merge tag 'powerpc-5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2022-01-14 15:17:26 +01:00
io-workarounds.c
powerpc: Fix reverse map real-mode address lookup with huge vmalloc
2021-05-28 22:54:27 +10:00
io.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
iomap.c
powerpc: inline iomap accessors
2020-12-04 01:01:09 +11:00
iommu.c
Merge tag 'powerpc-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2021-09-03 11:22:50 -07:00
irq.c
powerpc/64s/interrupt: Don't enable MSR[EE] in irq handlers unless perf is in use
2021-12-16 21:31:45 +11:00
isa-bridge.c
mm/vmalloc: remove unmap_kernel_range
2021-04-30 11:20:40 -07:00
jump_label.c
powerpc: Don't use 'struct ppc_inst' to reference instruction location
2021-06-17 00:09:00 +10:00
kdebugfs.c
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
kgdb.c
powerpc/config: Add CONFIG_BOOKE_OR_40x
2021-12-09 22:41:19 +11:00
kprobes-ftrace.c
ftrace: disable preemption when recursion locked
2021-10-27 11:21:49 -04:00
kprobes.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
kvm_emul.S
powerpc/kvm: Add ifdefs around template code
2019-09-14 00:04:40 +10:00
kvm.c
gup: Turn fault_in_pages_{readable,writeable} into fault_in_{readable,writeable}
2021-10-18 16:33:03 +02:00
l2cr_6xx.S
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
legacy_serial.c
powerpc/legacy_serial: Fix UBSAN: array-index-out-of-bounds
2021-05-12 11:07:39 +10:00
Makefile
powerpc/vdso: Merge vdso64 and vdso32 into a single directory
2022-02-12 22:47:43 +11:00
mce_power.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
mce.c
powerpc/64s: Move hash MMU support code under CONFIG_PPC_64S_HASH_MMU
2021-12-09 22:41:13 +11:00
misc_32.S
powerpc: Avoid link stack corruption in misc asm functions
2021-08-25 13:35:47 +10:00
misc_64.S
powerpc: Avoid link stack corruption in misc asm functions
2021-08-25 13:35:47 +10:00
misc.S
powerpc: Avoid link stack corruption in misc asm functions
2021-08-25 13:35:47 +10:00
module_32.c
powerpc/module_32: Fix livepatching for RO modules
2022-02-07 21:03:10 +11:00
module_64.c
powerpc/module_64: use module_init_section instead of patching names
2022-02-03 22:20:37 +11:00
module.c
powerpc/modules: Don't WARN on first module allocation attempt
2021-11-30 22:44:32 +11:00
msi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
note.S
powerpc: Add PowerPC Capabilities ELF note
2019-08-30 09:40:15 +10:00
nvram_64.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
of_platform.c
powerpc/eeh: Remove eeh_dev_phb_init_dynamic()
2020-07-26 23:34:19 +10:00
optprobes_head.S
powerpc: flexible GPR range save/restore macros
2021-11-29 23:15:20 +11:00
optprobes.c
powerpc/inst: Define ppc_inst_t as u32 on PPC32
2021-12-09 22:41:21 +11:00
paca.c
powerpc/64s: Move hash MMU support code under CONFIG_PPC_64S_HASH_MMU
2021-12-09 22:41:13 +11:00
pci_32.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
pci_64.c
mm/vmalloc: remove unmap_kernel_range
2021-04-30 11:20:40 -07:00
pci_dn.c
powerpc/pci: Move PHB discovery for PCI_DN using platforms
2021-02-09 00:01:05 +11:00
pci_of_scan.c
powerpc/pci: Remove pcibios_setup_bus_devices()
2020-01-06 16:25:29 +11:00
pci-common.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
pci-hotplug.c
powerpc/eeh: Release EEH device state synchronously
2020-05-18 21:58:44 +10:00
pmc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ppc32.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ppc_save_regs.S
powerpc: Improve ppc_save_regs()
2020-04-04 21:40:57 +11:00
proc_powerpc.c
proc: remove PDE_DATA() completely
2022-01-22 08:33:37 +02:00
process.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
prom_init_check.sh
powerpc/prom_init: Undo relocation before entering secure mode
2019-10-29 15:12:17 +11:00
prom_init.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
prom_parse.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
prom.c
powerpc/64: Move paca allocation later in boot
2022-02-02 20:32:11 +11:00
reloc_32.S
powerpc: Avoid link stack corruption in misc asm functions
2021-08-25 13:35:47 +10:00
reloc_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtas_flash.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
rtas_pci.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
rtas-proc.c
powerpc/rtas: rename RTAS_RMOBUF_MAX to RTAS_USER_REGION_SIZE
2021-04-14 23:04:16 +10:00
rtas-rtc.c
powerpc/rtas-rtc: remove unused constant
2021-06-25 14:47:20 +10:00
rtas.c
powerpc: Set crashkernel offset to mid of RMA region
2022-02-07 15:26:12 +11:00
rtasd.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
secure_boot.c
powerpc/pseries: Detect secure and trusted boot state of the system.
2020-07-16 14:49:53 +10:00
security.c
powerpc: add link stack flush mitigation status in debugfs.
2022-01-31 13:45:23 +11:00
secvar-ops.c
powerpc/powernv: Add OPAL API interface to access secure variable
2019-11-13 00:33:22 +11:00
secvar-sysfs.c
powerpc: expose secure variables to userspace via sysfs
2019-11-13 00:33:22 +11:00
setup_32.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
setup_64.c
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
setup-common.c
powerpc: Fix debug print in smp_setup_cpu_maps
2022-02-03 20:24:59 +11:00
setup.h
powerpc/config: Add CONFIG_BOOKE_OR_40x
2021-12-09 22:41:19 +11:00
signal_32.c
powerpc/signal32: Use struct_group() to zero spe regs
2021-12-02 10:39:00 +11:00
signal_64.c
signal: Replace force_fatal_sig with force_exit_sig when in doubt
2021-11-19 09:15:58 -06:00
signal.c
entry: rseq: Call rseq_handle_notify_resume() in tracehook_notify_resume()
2021-09-22 10:24:01 -04:00
signal.h
powerpc/signal32: Fix sigset_t copy
2021-11-16 21:24:16 +11:00
smp-tbsync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smp.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
stacktrace.c
kprobes: treewide: Make it harder to refer kretprobe_trampoline directly
2021-09-30 21:24:06 -04:00
static_call.c
powerpc/32: Add support for out-of-line static calls
2021-10-22 15:22:05 +11:00
suspend.c
PM: hibernate: powerpc: Expose pfn_is_nosave() prototype
2019-06-14 10:48:56 +02:00
swsusp_32.S
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
swsusp_64.c
powerpc/machdep: Remove stale functions from ppc_md structure
2021-10-22 15:22:05 +11:00
swsusp_asm64.S
powerpc/mm: Switch obsolete dssall to .long
2021-12-23 22:35:13 +11:00
swsusp_booke.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swsusp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sys_ppc32.c
powerpc/compat_sys: swap hi/lo parts of 64-bit syscall args in LE mode
2021-02-11 23:35:07 +11:00
syscalls.c
powerpc/syscalls: Simplify do_mmap2()
2021-08-25 13:35:48 +10:00
sysfs.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
systbl_chk.sh
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
systbl.S
powerpc/syscalls: switch to generic syscalltbl.sh
2021-04-14 23:04:16 +10:00
tau_6xx.c
powerpc/tau: Add 'static' storage qualifier to 'tau_work' definition
2021-08-20 17:00:53 +10:00
time.c
powerpc/64s/interrupt: Fix decrementer storm
2022-01-25 16:50:10 +11:00
tm.S
powerpc: flexible GPR range save/restore macros
2021-11-29 23:15:20 +11:00
traps.c
exit: Add and use make_task_dead.
2021-12-13 12:04:45 -06:00
ucall.S
powerpc/kernel: Add ucall_norets() ultravisor call handler
2019-08-30 09:40:15 +10:00
udbg_16550.c
powerpc/kernel: Add __init attribute to eligible functions
2021-12-23 22:33:10 +11:00
udbg.c
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
uprobes.c
powerpc/64s: avoid reloading (H)SRR registers if they are still valid
2021-06-25 00:06:55 +10:00
vdso32_wrapper.S
powerpc/vdso: Merge vdso64 and vdso32 into a single directory
2022-02-12 22:47:43 +11:00
vdso64_wrapper.S
powerpc/vdso: Merge vdso64 and vdso32 into a single directory
2022-02-12 22:47:43 +11:00
vdso.c
powerpc/vdso: Add support for time namespaces
2021-04-14 23:04:44 +10:00
vecemu.c
powerpc/inst: Define ppc_inst_t
2021-12-09 22:41:21 +11:00
vector.S
powerpc/64s/interrupt: handle MSR EE and RI in interrupt entry wrapper
2021-12-16 21:31:45 +11:00
vmlinux.lds.S
powerpc/toc: Future proof kernel toc
2021-12-23 22:35:01 +11:00
watchdog.c
powerpc/watchdog: help remote CPUs to flush NMI printk output
2021-11-29 23:08:43 +11:00