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twx-linux/arch/arm/kernel
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Nathan Huckleberry 35e1338bdd 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>
2020-08-19 08:16:27 +02:00
..
.gitignore
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arch_timer.c
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armksyms.c
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asm-offsets.c
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atags_compat.c
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atags_parse.c
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atags_proc.c
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atags.h
ARM: mark setup_machine_tags() stub as __init __noreturn
2019-05-14 19:52:48 -07:00
bios32.c
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bugs.c
treewide: fix typos of SPDX-License-Identifier
2019-06-01 18:29:58 +02:00
cpuidle.c
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crash_dump.c
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debug.S
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devtree.c
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dma-isa.c
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dma.c
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early_printk.c
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2019-06-19 17:09:55 +02:00
efi.c
mm/pgtable: drop pgtable_t variable from pte_fn_t functions
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elf.c
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entry-armv.S
ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h
2020-06-03 08:21:18 +02:00
entry-common.S
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entry-ftrace.S
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2019-06-19 17:09:55 +02:00
entry-header.S
ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h
2020-06-03 08:21:18 +02:00
entry-v7m.S
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2019-06-19 17:09:55 +02:00
fiq.c
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fiqasm.S
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ftrace.c
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head-common.S
ARM: 8914/1: NOMMU: Fix exc_ret for XIP
2019-10-10 22:23:20 +01:00
head-inflate-data.c
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2019-06-19 17:09:55 +02:00
head-nommu.S
ARM: 8914/1: NOMMU: Fix exc_ret for XIP
2019-10-10 22:23:20 +01:00
head.S
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2019-06-19 17:09:55 +02:00
hibernate.c
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2019-05-30 11:29:22 -07:00
hw_breakpoint.c
ARM: 8986/1: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
2020-08-05 09:59:42 +02:00
hyp-stub.S
ARM: 8955/1: virt: Relax arch timer version check during early boot
2020-02-05 21:22:49 +00:00
insn.c
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io.c
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irq.c
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isa.c
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iwmmxt.S
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2019-06-19 17:09:55 +02:00
jump_label.c
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00
kgdb.c
kgdb/treewide: constify struct kgdb_arch arch_kgdb_ops
2018-12-30 08:33:06 +00:00
machine_kexec.c
ARM: avoid Cortex-A9 livelock on tight dmb loops
2019-02-01 22:05:50 +00:00
Makefile
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module-plts.c
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2019-06-19 17:09:55 +02:00
module.c
Merge tag 'modules-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2019-07-18 12:06:57 -07:00
module.lds
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opcodes.c
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2019-06-19 17:09:55 +02:00
paravirt.c
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2019-05-30 11:26:41 -07:00
patch.c
ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t
2019-02-26 11:24:50 +00:00
perf_callchain.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
perf_event_v6.c
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perf_event_v7.c
ARM: 8873/1: perf: cleanup cppcheck shifting warning
2019-08-23 11:38:46 +01:00
perf_event_xscale.c
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perf_regs.c
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pj4-cp0.c
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2019-06-19 17:09:55 +02:00
process.c
arm: Implement copy_thread_tls
2020-01-14 20:08:34 +01:00
psci_smp.c
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2019-05-30 11:26:41 -07:00
ptrace.c
ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
2020-06-17 16:40:21 +02:00
reboot.c
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2019-06-19 17:09:55 +02:00
reboot.h
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relocate_kernel.S
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return_address.c
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setup.c
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signal.c
ARM: signal: Mark expected switch fall-through
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signal.h
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sigreturn_codes.S
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sleep.S
ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used
2019-02-26 11:32:54 +00:00
smccc-call.S
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smp_scu.c
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smp_tlb.c
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smp_twd.c
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smp.c
ARM: 8943/1: Fix topology setup in case of CPU hotplug for CONFIG_SCHED_MC
2020-01-17 19:48:55 +01:00
stacktrace.c
ARM: 8992/1: Fix unwind_frame for clang-built kernels
2020-08-19 08:16:27 +02:00
suspend.c
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swp_emulate.c
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sys_arm.c
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sys_oabi-compat.c
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tcm.c
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thumbee.c
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time.c
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topology.c
ARM: 8943/1: Fix topology setup in case of CPU hotplug for CONFIG_SCHED_MC
2020-01-17 19:48:55 +01:00
traps.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
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unwind.c
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v7m.c
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vdso.c
arm64: Introduce a way to disable the 32bit vdso
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vmlinux-xip.lds.S
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vmlinux.lds.h
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vmlinux.lds.S
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xscale-cp0.c
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2019-06-19 17:09:55 +02:00