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linux/arch/powerpc/kernel
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Michael Ellerman 8e3407e0f5 powerpc/64s: Disable stack variable initialisation for prom_init 
[ Upstream commit be640317a1 ]

With GCC 12 allmodconfig prom_init fails to build:

  Error: External symbol 'memset' referenced from prom_init.c
  make[2]: *** [arch/powerpc/kernel/Makefile:204: arch/powerpc/kernel/prom_init_check] Error 1

The allmodconfig build enables KASAN, so all calls to memset in
prom_init should be converted to __memset by the #ifdefs in
asm/string.h, because prom_init must use the non-KASAN instrumented
versions.

The build failure happens because there's a call to memset that hasn't
been caught by the pre-processor and converted to __memset. Typically
that's because it's a memset generated by the compiler itself, and that
is the case here.

With GCC 12, allmodconfig enables CONFIG_INIT_STACK_ALL_PATTERN, which
causes the compiler to emit memset calls to initialise on-stack
variables with a pattern.

Because prom_init is non-user-facing boot-time only code, as a
workaround just disable stack variable initialisation to unbreak the
build.

Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220718134418.354114-1-mpe@ellerman.id.au
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 14:23:05 +02:00
..
ptrace
powerpc/32: Fix overread/overwrite of thread_struct via ptrace
2022-06-14 18:36:27 +02:00
syscalls
compat: remove some compat entry points
2021-09-08 15:32:35 -07:00
trace
powerpc: flexible GPR range save/restore macros
2022-07-12 16:35:02 +02:00
vdso32
Merge tag 'powerpc-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2021-04-30 12:22:28 -07:00
vdso64
powerpc/vdso: Don't use r30 to avoid breaking Go lang
2021-07-29 23:13:12 +10:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
align.c
powerpc: Rename probe_kernel_read_inst()
2021-04-21 22:52:33 +10:00
asm-offsets.c
Merge branch 'fixes' into next
2021-09-03 22:54:12 +10:00
audit.c
…
btext.c
powerpc/btext: add missing of_node_put
2022-01-27 11:04:57 +01:00
cacheinfo.c
powerpc/smp: Use existing L2 cache_map cpumask to find L3 cache siblings
2021-08-04 10:53:39 +10:00
cacheinfo.h
powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild
2019-06-15 16:52:06 +10:00
compat_audit.c
…
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/perf: MMCR0 control for PMU registers under PMCC=00
2020-12-04 01:01:29 +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: handle irq_enter/irq_exit in interrupt handler wrappers
2021-02-09 00:10:49 +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
arch: powerpc: Stop building and using oprofile
2021-01-29 10:05:51 +05:30
early_32.c
powerpc/fsl_booke/32: implement KASLR infrastructure
2019-11-13 19:27:40 +11:00
eeh_cache.c
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
eeh_driver.c
Merge tag 'pci-v5.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2020-08-07 18:48:15 -07:00
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
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
entry_32.S
powerpc: flexible GPR range save/restore macros
2022-07-12 16:35:02 +02:00
entry_64.S
powerpc/rtas: Keep MSR[RI] set when calling RTAS
2022-06-09 10:22:42 +02:00
epapr_hcalls.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
epapr_paravirt.c
powerpc: Don't use 'struct ppc_inst' to reference instruction location
2021-06-17 00:09:00 +10:00
exceptions-64e.S
powerpc: flexible GPR range save/restore macros
2022-07-12 16:35:02 +02:00
exceptions-64s.S
powerpc: flexible GPR range save/restore macros
2022-07-12 16:35:02 +02:00
fadump.c
powerpc/fadump: fix PT_LOAD segment for boot memory area
2022-06-09 10:23:07 +02:00
firmware.c
powerpc: fix unbalanced node refcount in check_kvm_guest()
2021-11-18 19:16:51 +01:00
fpu.S
powerpc/32: Remove unneccessary calculations in load_up_{fpu/altivec}
2021-08-18 23:49:55 +10:00
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/8xx: Fix pinned TLBs with CONFIG_STRICT_KERNEL_RWX
2021-11-25 09:48:44 +01:00
head_32.h
powerpc: flexible GPR range save/restore macros
2022-07-12 16:35:02 +02:00
head_40x.S
powerpc/40x: Map 32Mbytes of memory at startup
2022-01-27 11:05:01 +01:00
head_44x.S
powerpc/booke: Avoid link stack corruption in several places
2021-08-25 13:35:47 +10:00
head_64.S
powerpc/kexec: blacklist functions called in real mode for kprobe
2021-07-26 20:38:51 +10:00
head_book3s_32.S
powerpc/603: Fix boot failure with DEBUG_PAGEALLOC and KFENCE
2022-02-23 12:03:14 +01:00
head_booke.h
powerpc: flexible GPR range save/restore macros
2022-07-12 16:35:02 +02:00
head_fsl_booke.S
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
hw_breakpoint_constraints.c
powerpc/uaccess: Remove __get/put_user_inatomic()
2021-04-03 21:21:41 +11:00
hw_breakpoint.c
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
idle_6xx.S
powerpc/mm: Switch obsolete dssall to .long
2022-06-14 18:36:27 +02:00
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
2022-06-14 18:36:27 +02:00
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: flexible GPR range save/restore macros
2022-07-12 16:35:02 +02:00
interrupt.c
powerpc: Avoid discarding flags in system_call_exception()
2022-01-27 11:03:22 +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/64: warn if local irqs are enabled in NMI or hardirq context
2021-10-07 19:54:55 +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/64s: avoid reloading (H)SRR registers if they are still valid
2021-06-25 00:06:55 +10:00
kprobes-ftrace.c
powerpc/64s: avoid reloading (H)SRR registers if they are still valid
2021-06-25 00:06:55 +10:00
kprobes.c
powerpc/kprobes: Fix kprobe Oops happens in booke
2021-08-09 16:31:54 +10:00
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}
2022-05-01 17:22:28 +02:00
l2cr_6xx.S
powerpc/mm: Switch obsolete dssall to .long
2022-06-14 18:36:27 +02:00
legacy_serial.c
powerpc/legacy_serial: Fix UBSAN: array-index-out-of-bounds
2021-05-12 11:07:39 +10:00
Makefile
powerpc/64s: Disable stack variable initialisation for prom_init
2022-08-17 14:23:05 +02:00
mce_power.c
powerpc/powernv: Fix machine check reporting of async store errors
2021-06-21 21:13:19 +10:00
mce.c
powerpc/mce: Fix access error in mce handler
2021-09-13 22:34:12 +10:00
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/modules: Use PPC_RAW_xx() macros
2021-06-16 00:16:48 +10:00
module_64.c
powerpc/module_64: Fix livepatching for RO modules
2021-12-22 09:32:49 +01:00
module.c
powerpc/modules: Don't WARN on first module allocation attempt
2022-01-27 11:04:08 +01:00
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
printk: introduce a kmsg_dump iterator
2021-03-08 11:43:27 +01:00
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
2022-07-12 16:35:02 +02:00
optprobes.c
powerpc/kprobes: Fix Oops by passing ppc_inst as a pointer to emulate_step() on ppc32
2021-06-25 14:46:51 +10:00
paca.c
powerpc/paca: Remove mm_ctx_id and mm_ctx_slb_addr_limit
2021-05-17 15:27:15 +10:00
pci_32.c
powerpc/64: Adjust order in pcibios_init()
2019-08-22 23:11:48 +10:00
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/pseries/pci: Add MSI domains
2021-08-10 23:14:57 +10:00
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: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
process.c
powerpc: Enable execve syscall exit tracepoint
2022-06-29 09:03:30 +02:00
prom_init_check.sh
powerpc/prom_init: Fix kernel config grep
2022-07-07 17:53:24 +02:00
prom_init.c
powerpc/prom_init: Fix improper check of prom_getprop()
2022-01-27 11:04:06 +01:00
prom_parse.c
…
prom.c
Merge tag 'kbuild-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2021-09-03 15:33:47 -07:00
reloc_32.S
powerpc: Avoid link stack corruption in misc asm functions
2021-08-25 13:35:47 +10:00
reloc_64.S
powerpc/64: Add UADDR64 relocation support
2022-05-09 09:14:44 +02:00
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/rtas: Allow ibm,platform-dump RTAS call with null buffer address
2022-06-29 09:03:30 +02:00
rtasd.c
powerpc: Replace deprecated CPU-hotplug functions.
2021-08-10 23:14:56 +10:00
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/security: Add a helper to query stf_barrier type
2021-10-07 19:52:58 +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/secvar: fix refcount leak in format_show()
2022-04-13 20:59:08 +02:00
setup_32.c
powerpc: Don't use 'struct ppc_inst' to reference instruction location
2021-06-17 00:09:00 +10:00
setup_64.c
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
setup-common.c
powerpc: rename powerpc_debugfs_root to arch_debugfs_dir
2021-08-13 22:04:26 +10:00
setup.h
powerpc: remove unneeded semicolons
2021-02-09 00:10:50 +11:00
signal_32.c
gup: Turn fault_in_pages_{readable,writeable} into fault_in_{readable,writeable}
2022-05-01 17:22:28 +02:00
signal_64.c
gup: Turn fault_in_pages_{readable,writeable} into fault_in_{readable,writeable}
2022-05-01 17:22:28 +02:00
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
2021-11-25 09:48:44 +01:00
smp-tbsync.c
…
smp.c
powerpc/fadump: Fix inaccurate CPU state info in vmcore generated with panic
2022-01-27 11:05:02 +01:00
stacktrace.c
powerpc/stacktrace: Include linux/delay.h
2021-08-03 22:33:37 +10:00
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
2022-06-14 18:36:27 +02:00
swsusp_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
2019-06-19 17:11:22 +02:00
swsusp_asm64.S
powerpc/mm: Switch obsolete dssall to .long
2022-06-14 18:36:27 +02:00
swsusp_booke.S
…
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/smp: Fix OOPS in topology_init()
2021-08-07 08:53:59 +10:00
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
Merge branch 'fixes' into next
2021-09-03 22:54:12 +10:00
tm.S
powerpc/tm: Fix more userspace r13 corruption
2022-07-12 16:35:02 +02:00
traps.c
powerpc/64s: Fix unrecoverable MCE calling async handler from NMI
2021-10-07 19:54:55 +11:00
ucall.S
powerpc/kernel: Add ucall_norets() ultravisor call handler
2019-08-30 09:40:15 +10:00
udbg_16550.c
powerpc/microwatt: Use standard 16550 UART for console
2021-06-21 21:16:31 +10:00
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: fix unnecessary rebuilds of vgettimeofday.o
2021-01-30 22:23:42 +11:00
vdso64_wrapper.S
powerpc/vdso: fix unnecessary rebuilds of vgettimeofday.o
2021-01-30 22:23:42 +11:00
vdso.c
powerpc/vdso: Add support for time namespaces
2021-04-14 23:04:44 +10:00
vecemu.c
powerpc: Define and use get_user_instr() et. al.
2020-05-19 00:10:37 +10:00
vector.S
powerpc/32: Remove unneccessary calculations in load_up_{fpu/altivec}
2021-08-18 23:49:55 +10:00
vmlinux.lds.S
powerpc/64: Add UADDR64 relocation support
2022-05-09 09:14:44 +02:00
watchdog.c
powerpc/watchdog: Fix missed watchdog reset due to memory ordering race
2022-01-27 11:04:57 +01:00