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linux/arch/arm/kernel
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Nathan Huckleberry 0f4c622c08 ARM: 8992/1: Fix unwind_frame for clang-built kernels 
commit b4d5ec9b39 upstream.

Since clang does not push pc and sp in function prologues, the current
implementation of unwind_frame does not work. By using the previous
frame's lr/fp instead of saved pc/sp we get valid unwinds on clang-built
kernels.

The bounds check on next frame pointer must be changed as well since
there are 8 less bytes between frames.

This fixes /proc/<pid>/stack.

Link: https://github.com/ClangBuiltLinux/linux/issues/912

Reported-by: Miles Chen <miles.chen@mediatek.com>
Tested-by: Miles Chen <miles.chen@mediatek.com>
Cc: stable@vger.kernel.org
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-16 08:47:34 +09:00
..
.gitignore
[ARM] 5194/1: update .gitignore
2008-08-12 19:54:09 +01:00
arch_timer.c
arch_timer: Move to generic sched_clock framework
2013-10-09 16:54:10 -07:00
armksyms.c
kasan: bring up KASAN for 32bit os [2/2]
2019-05-21 13:45:25 +08:00
asm-offsets.c
mm: optimize thread stack usage on ARMv7 [1/1]
2019-03-15 12:17:27 +08:00
atags_compat.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
atags_parse.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
atags_proc.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
atags.h
ARM: 8495/1: ATAGS: move save_atags() to arch/arm/include/asm/setup.h
2016-01-04 11:26:00 +00:00
bios32.c
Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next
2016-08-01 12:23:57 -05:00
bugs.c
ARM: clean up per-processor check_bugs method call
2023-05-15 11:34:01 +09:00
calls.S
ARM: wire up new pkey syscalls
2016-10-19 10:18:47 +01:00
cpuidle.c
perf: arm: enable pmuserenr [1/1]
2019-03-13 20:22:32 +08:00
crash_dump.c
ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr
2014-04-07 12:10:00 +01:00
debug.S
ARM: unify MMU/!MMU addruart calls
2015-05-20 23:09:51 +02:00
devtree.c
ARM: 8616/1: dt: Respect property size when parsing CPUs
2016-09-29 16:57:43 +01:00
dma-isa.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
dma.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
early_printk.c
early_printk: consolidate random copies of identical code
2013-04-29 18:28:13 -07:00
efi.c
ARM/efi: Apply strict permissions for UEFI Runtime Services regions
2016-04-28 11:33:53 +02:00
elf.c
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
entry-armv.S
mm: fix wrong cpu usage information after vmap changed [1/1]
2020-12-17 17:21:05 +09:00
entry-common.S
ARM: 8802/1: Call syscall_trace_exit even when system call skipped
2023-05-15 15:12:40 +09:00
entry-ftrace.S
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
entry-header.S
ARM: spectre-v1: fix syscall entry
2023-05-15 09:33:14 +09:00
entry-v7m.S
ARM: rename S_FRAME_SIZE to PT_REGS_SIZE
2016-06-22 19:54:28 +01:00
fiq.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
fiqasm.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
ftrace.c
config: remove unused configs on ref-board [1/1]
2023-04-21 13:52:32 +09:00
head-common.S
ARM: make lookup_processor_type() non-__init
2023-05-15 11:33:59 +09:00
head-nommu.S
ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support.
2016-09-06 15:51:08 +01:00
head.S
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
hibernate.c
ARM: use virt_to_idmap() for soft_restart()
2016-02-08 15:48:32 +00:00
hw_breakpoint.c
ARM: 8986/1: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
2023-05-16 08:43:50 +09:00
hyp-stub.S
ARM: 8848/1: virt: Align GIC version check with arm64 counterpart
2023-05-15 16:44:18 +09:00
insn.c
ARM: fix missing bug.h include in arch/arm/kernel/insn.c
2012-03-30 11:51:46 +01:00
io.c
ARM: io.c: clean up EXPORT_SYMBOL()s
2014-11-21 15:25:02 +00:00
irq.c
ARM: 8824/1: fix a migrating irq bug when hotplug cpu
2023-05-15 12:05:25 +09:00
isa.c
arm: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:15 -07:00
iwmmxt.S
ARM: 8221/1: PJ4: allow building in Thumb-2 mode
2014-12-03 16:08:00 +00:00
jump_label.c
jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}
2015-08-03 11:34:12 +02:00
kgdb.c
ANDROID: ARM: kgdb: ignore breakpoint instructions from user mode
2017-01-27 13:51:28 -08:00
machine_kexec.c
ARM: avoid Cortex-A9 livelock on tight dmb loops
2023-05-15 12:19:00 +09:00
Makefile
ARM: bugs: prepare processor bug infrastructure
2023-05-15 09:32:59 +09:00
module-plts.c
ARM: 8662/1: module: split core and init PLT sections
2017-05-25 15:44:44 +02:00
module.c
kasan: bring up KASAN for 32bit os [2/2]
2019-05-21 13:45:25 +08:00
module.lds
ARM: 8662/1: module: split core and init PLT sections
2017-05-25 15:44:44 +02:00
opcodes.c
ARM: 7206/1: Add generic ARM instruction set condition code checks.
2011-12-13 08:52:02 +00:00
paravirt.c
arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops
2015-12-21 14:40:54 +00:00
patch.c
ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t
2023-05-15 12:23:17 +09:00
perf_callchain.c
perf core: Add a 'nr' field to perf_event_callchain_context
2016-05-16 23:11:51 -03:00
perf_event_v6.c
arm: perf: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +01:00
perf_event_v7.c
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
perf_event_xscale.c
arm: perf: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +01:00
perf_regs.c
perf: Move task_pt_regs sampling into arch code
2015-01-09 11:12:28 +01:00
pj4-cp0.c
ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode
2016-01-04 11:12:10 +00:00
process.c
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
psci_smp.c
ARM: use const and __initconst for smp_operations
2015-12-01 22:17:45 +01:00
ptrace.c
ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
2023-05-15 17:32:02 +09:00
reboot.c
ANDROID: ARM: add option to flush console before reboot
2017-01-27 13:52:08 -08:00
reboot.h
ARM: move reboot code to arch/arm/kernel/reboot.c
2015-04-02 09:50:45 +01:00
relocate_kernel.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
return_address.c
ARM: 8328/1: remove empty preprocessor #else branch
2015-03-28 16:54:53 +00:00
setup.c
ARM: spectre-v2: per-CPU vtables to work around big.Little systems
2023-05-15 11:34:03 +09:00
signal.c
ARM: 8793/1: signal: replace __put_user_error with __put_user
2023-05-15 11:33:50 +09:00
sigreturn_codes.S
ARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S
2013-11-30 22:21:00 +00:00
sleep.S
ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used
2023-05-15 16:44:17 +09:00
smccc-call.S
arm: kernel: Add SMC structure parameter
2017-04-12 12:41:21 +02:00
smp_scu.c
ARM: 8122/1: smp_scu: enable SCU standby support
2014-08-02 08:51:53 +01:00
smp_tlb.c
ARM: 8613/1: Fix the uaccess crash on PB11MPCore
2017-01-26 08:24:43 +01:00
smp_twd.c
arm/twd: Convert to hotplug state machine
2016-07-15 10:40:28 +02:00
smp.c
ARM: prevent tracing IPI_CPU_BACKTRACE
2023-05-15 13:47:08 +09:00
stacktrace.c
ARM: 8992/1: Fix unwind_frame for clang-built kernels
2023-05-16 08:47:34 +09:00
suspend.c
ARM: bugs: hook processor bug checking into SMP and suspend paths
2023-05-15 09:33:00 +09:00
swp_emulate.c
ARM: 8475/1: SWP emulation: Restore original *data when failed
2015-12-15 11:51:42 +00:00
sys_arm.c
arm: switch to generic fork/vfork/clone
2012-11-28 22:13:54 -05:00
sys_oabi-compat.c
ARM: 8792/1: oabi-compat: copy oabi events using __copy_to_user()
2023-05-15 11:33:35 +09:00
tcm.c
ARM: 8388/1: tcm: Don't crash when TCM banks are protected by TrustZone
2015-06-06 10:37:28 +01:00
thumbee.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
time.c
clocksource: cosmetic: Drop OF 'dependency' from symbols
2015-10-01 02:18:39 +02:00
topology.c
sched: EAS: sched_energy for arm on g12b [1/1]
2018-12-20 21:58:10 +08:00
traps.c
debug: show pfn info when undefined instr happens at user space [1/1]
2018-12-17 17:24:22 +08:00
unwind.c
ARM: 8840/1: use a raw_spinlock_t in unwind
2023-05-15 12:17:01 +09:00
v7m.c
ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines
2013-09-02 13:49:29 +01:00
vdso.c
ARM: 8957/1: VDSO: Match ARMv8 timer in cntvct_functional()
2023-05-15 17:10:27 +09:00
vmlinux-xip.lds.S
ARM: Fix XIP kernels
2016-11-16 23:51:19 +00:00
vmlinux.lds.S
nmi_backtrace: generate one-line reports for idle cpus
2016-10-07 18:46:30 -07:00
xscale-cp0.c
ARM: make xscale iwmmxt code multiplatform aware
2015-12-01 21:44:24 +01:00