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Anurag Aggarwal a51345770e ARM: 7987/1: ARM : unwinder : Prevent data abort due to stack overflow 
While unwinding backtrace, stack overflow is possible. This stack
overflow can sometimes lead to data abort in system if the area after
stack is not mapped to physical memory.

To prevent this problem from happening, execute the instructions that
can cause a data abort in separate helper functions, where a check for
feasibility is made before reading each word from the stack.

Signed-off-by: Anurag Aggarwal <a.anurag@samsung.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-02-25 11:48:24 +00:00
..
.gitignore
…
arch_timer.c
arch_timer: Move to generic sched_clock framework
2013-10-09 16:54:10 -07:00
armksyms.c
ARM: 7877/1: use built-in byte swap function
2013-12-29 12:32:45 +00:00
arthur.c
…
asm-offsets.c
ARM: kernel: implement stack pointer save array through MPIDR hashing
2013-06-20 11:24:11 +01:00
atags_compat.c
ARM: 7505/1: split out ATAGS parsing
2012-09-03 22:55:56 +01:00
atags_parse.c
ARM: constify machine_desc structure uses
2013-07-26 14:55:59 +01:00
atags_proc.c
procfs: new helper - PDE_DATA(inode)
2013-04-09 14:13:32 -04:00
atags.h
ARM: constify machine_desc structure uses
2013-07-26 14:55:59 +01:00
bios32.c
ARM: 7986/1: bios32: use pci_enable_resource to enable PCI resources
2014-02-25 11:37:49 +00:00
calls.S
sched: Add new scheduler syscalls to support an extended scheduling parameters ABI
2014-01-13 13:41:04 +01:00
cpuidle.c
cpuidle: Add common time keeping and irq enabling
2012-03-21 01:59:40 -04:00
crash_dump.c
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
2011-03-23 19:47:19 -07:00
debug.S
ARM: compile fix for DEBUG_LL=y && MMU=n
2013-01-16 14:30:06 -08:00
devtree.c
arch/arm/kernel/: use memblock apis for early memory allocations
2014-01-21 16:19:47 -08:00
dma-isa.c
…
dma.c
locking, ARM: Annotate low level hw locks as raw
2011-09-13 11:12:14 +02:00
early_printk.c
early_printk: consolidate random copies of identical code
2013-04-29 18:28:13 -07:00
elf.c
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
entry-armv.S
ARM: 7946/1: asm: __und_usr_thumb need byteswap instructions in BE case
2014-01-28 14:34:02 +00:00
entry-common.S
ARM: asm: Add ARM_BE8() assembly helper
2013-10-19 20:46:33 +01:00
entry-header.S
arm: Fix build error with context tracking calls
2013-09-27 17:59:47 +02:00
entry-v7m.S
ARM: 7890/1: v7-M: drop using mach/entry-macro.S
2013-12-29 12:32:32 +00:00
etm.c
ARM: 7905/1: etm: Remove unnecessary amba_set_drvdata()
2013-12-29 12:32:34 +00:00
fiq.c
ARM: 7819/1: fiq: Cast the first argument of flush_icache_range()
2013-08-20 00:11:50 +01:00
fiqasm.S
ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2
2011-05-26 10:31:06 +01:00
ftrace.c
ARM: 7468/1: ftrace: Trace function entry before updating index
2012-07-31 10:30:42 +01:00
head-common.S
arm: delete __cpuinit/__CPUINIT usage from all ARM users
2013-07-14 19:36:52 -04:00
head-nommu.S
ARM: fix asm/memory.h build error
2013-12-13 20:25:30 +00:00
head.S
ARM: 7947/1: Make pgtbl macro more robust
2014-01-28 14:34:03 +00:00
hw_breakpoint.c
ARM: 7948/1: hw_breakpoint: Add ARMv8 support
2014-02-10 11:48:05 +00:00
hyp-stub.S
ARM: 7786/1: hyp: fix macro parameterisation
2013-07-22 14:30:34 +01:00
insn.c
ARM: fix missing bug.h include in arch/arm/kernel/insn.c
2012-03-30 11:51:46 +01:00
insn.h
ARM: 7334/1: add jump label support
2012-03-24 09:38:56 +00:00
io.c
ARM: 7930/1: Introduce atomic MMIO modify
2014-01-28 14:06:25 +00:00
irq.c
ARM: irq: Call irqchip_init if no init_irq function is specified
2013-04-02 11:05:40 -07:00
isa.c
…
iwmmxt.S
ARM: pxa: fix logic error in PJ4 iWMMXt handling
2011-08-11 10:10:26 +08:00
jump_label.c
ARM: 7334/1: add jump label support
2012-03-24 09:38:56 +00:00
kgdb.c
…
kprobes-arm.c
ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below
2011-11-30 23:54:54 +00:00
kprobes-common.c
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
kprobes-test-arm.c
ARM: kprobes: make more tests conditional
2012-10-09 17:07:43 +02:00
kprobes-test-thumb.c
ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels
2011-11-26 21:58:53 +00:00
kprobes-test.c
treewide: fix printk typo in multiple drivers
2012-11-19 11:08:17 +01:00
kprobes-test.h
ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels
2011-11-26 21:58:53 +00:00
kprobes-thumb.c
ARM: 7423/1: kprobes: run t32_simulate_ldr_literal() without insn slot
2012-06-14 15:11:44 +01:00
kprobes.c
ARM: 7862/1: pcpu: replace __get_cpu_var_uses
2013-10-29 11:06:27 +00:00
kprobes.h
ARM: kprobes: Add exports for test code
2011-09-20 18:17:43 +00:00
machine_kexec.c
ARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel
2013-11-30 22:21:02 +00:00
Makefile
Merge branch 'baserock/bjdooks/312-rc4/be/core-v3' of git://git.baserock.org/delta/linux into devel-stable
2013-10-30 22:20:26 +00:00
module.c
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2013-11-14 08:51:29 +09:00
opcodes.c
ARM: 7206/1: Add generic ARM instruction set condition code checks.
2011-12-13 08:52:02 +00:00
patch.c
ARM: 7332/1: extract out code patch function from kprobes
2012-03-24 09:38:55 +00:00
patch.h
ARM: 7332/1: extract out code patch function from kprobes
2012-03-24 09:38:55 +00:00
perf_event_cpu.c
ARM: 7937/1: perf_event: Silence sparse warning
2014-01-11 12:06:58 +00:00
perf_event_v6.c
ARM: perf: don't pretend to support counting of L1I writes
2013-01-16 12:01:59 +00:00
perf_event_v7.c
ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit
2013-03-03 22:54:17 +00:00
perf_event_xscale.c
ARM: perf: don't pretend to support counting of L1I writes
2013-01-16 12:01:59 +00:00
perf_event.c
Revert "ARM: 7556/1: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD"
2013-12-17 15:21:35 +01:00
perf_regs.c
ARM: perf: add support for perf registers API
2013-09-30 16:41:50 +01:00
pj4-cp0.c
arm: remove several unnecessary module.h include instances
2011-10-31 19:30:48 -04:00
process.c
ARM: 7912/1: check stack pointer in get_wchan
2013-12-09 23:24:31 +00:00
psci_smp.c
ARM: PSCI: remove unnecessary include of arm-gic.h
2013-10-01 16:34:10 -05:00
psci.c
arm: introduce psci_smp_ops
2013-05-21 14:24:11 +00:00
ptrace.c
ptrace/arm: revert "hw_breakpoints: Fix racy access to ptrace breakpoints"
2013-07-09 10:33:25 -07:00
relocate_kernel.S
ARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel
2013-11-30 22:21:02 +00:00
return_address.c
ARM: 7676/1: fix a wrong value returned from CALLER_ADDRn
2013-03-19 11:43:46 +00:00
setup.c
ARM: 7982/1: introduce HWCAP2 feature bits for ARMv8 Crypto Extensions
2014-02-25 11:40:50 +00:00
signal.c
Merge branches 'fixes', 'mmci' and 'sa11x0' into for-next
2013-11-12 10:59:08 +00:00
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
Merge branch 'baserock/bjdooks/312-rc4/be/core-v3' of git://git.baserock.org/delta/linux into devel-stable
2013-10-30 22:20:26 +00:00
smp_scu.c
ARM: smp_scu: data endian fixes
2013-10-19 20:46:33 +01:00
smp_tlb.c
ARM: 7855/1: Add check for Cortex-A15 errata 798181 ECO
2013-10-29 11:06:13 +00:00
smp_twd.c
ARM: twd: data endian fix
2013-10-19 20:46:33 +01:00
smp.c
ARM: SMP implementations are not supposed to return from smp_ops.cpu_die()
2014-01-21 16:42:14 +00:00
stacktrace.c
ARM: 7913/1: fix framepointer check in unwind_frame
2013-12-09 23:24:33 +00:00
suspend.c
ARM: suspend: use hash of cpu_logical_map value to index into save array
2013-07-30 09:00:43 -04:00
swp_emulate.c
arm: single_open() leaks
2013-05-05 00:07:22 -04:00
sys_arm.c
arm: switch to generic fork/vfork/clone
2012-11-28 22:13:54 -05:00
sys_oabi-compat.c
userns: Convert stat to return values mapped from kuids and kgids
2012-05-15 14:08:35 -07:00
tcm.c
ARM: add permission annotations to MT_MEMORY* mapping types
2013-12-11 09:53:14 +00:00
thumbee.c
ARM: 7385/1: ThumbEE: Use cpuid macros to read ID_PFR0 for ThumbEE
2012-04-25 19:49:26 +01:00
time.c
ARM: call of_clk_init from default time_init handler
2013-09-29 21:09:15 +02:00
topology.c
ARM: 7920/1: topology: Staticise non-exported symbols
2013-12-29 12:32:42 +00:00
traps.c
Merge branches 'amba', 'fixes', 'kees', 'misc' and 'unstable/sa11x0' into for-next
2014-01-21 21:26:33 +00:00
unwind.c
ARM: 7987/1: ARM : unwinder : Prevent data abort due to stack overflow
2014-02-25 11:48:24 +00:00
v7m.c
ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines
2013-09-02 13:49:29 +01:00
vmlinux.lds.S
ARM: use linker magic for vectors and vector stubs
2013-07-31 21:34:24 +01:00
xscale-cp0.c
arm: remove several unnecessary module.h include instances
2011-10-31 19:30:48 -04:00