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b9dd05c700
linux/arch/arm/kernel
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Mark Rutland b9dd05c700 ARM: 8720/1: ensure dump_instr() checks addr_limit 
When CONFIG_DEBUG_USER is enabled, it's possible for a user to
deliberately trigger dump_instr() with a chosen kernel address.

Let's avoid problems resulting from this by using get_user() rather than
__get_user(), ensuring that we don't erroneously access kernel memory.

So that we can use the same code to dump user instructions and kernel
instructions, the common dumping code is factored out to __dump_instr(),
with the fs manipulated appropriately in dump_instr() around calls to
this.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-11-06 12:00:38 +00:00
..
.gitignore
arch_timer.c
armksyms.c ARM: implement memset32 & memset64 2017-09-08 18:26:48 -07:00
asm-offsets.c ARM: save and reset the address limit when entering an exception 2016-07-07 16:01:01 +01:00
atags_compat.c
atags_parse.c ARM: fix rd_size declaration 2017-07-10 16:32:34 -07:00
atags_proc.c
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 ARM/PCI: Fix pcibios_init_resource() struct pci_host_bridge leak 2017-07-10 09:33:14 -05:00
cpuidle.c ARM: Convert to using %pOF instead of full_name 2017-08-16 22:25:30 +02:00
crash_dump.c
debug.S ARM: 8704/1: semihosting: use proper instruction on v7m processors 2017-10-12 11:28:29 +01:00
devtree.c ARM: Convert to using %pOF instead of full_name 2017-08-16 22:25:30 +02:00
dma-isa.c
dma.c
early_printk.c
efi.c ARM/efi: Apply strict permissions for UEFI Runtime Services regions 2016-04-28 11:33:53 +02:00
elf.c
entry-armv.S Merge branches 'fixes' and 'misc' into for-linus 2017-09-09 16:34:41 +01:00
entry-common.S Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-09-12 06:10:44 -07:00
entry-ftrace.S ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS 2017-06-18 22:25:16 +01:00
entry-header.S ARM: save and reset the address limit when entering an exception 2016-07-07 16:01:01 +01:00
entry-v7m.S ARM: rename S_FRAME_SIZE to PT_REGS_SIZE 2016-06-22 19:54:28 +01:00
fiq.c
fiqasm.S
ftrace.c ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS 2017-06-18 22:25:16 +01:00
head-common.S
head-nommu.S ARM: 8649/2: nommu: remove Hivecs configuration is asm 2017-02-28 11:06:15 +00:00
head.S ARM: align .data section 2017-08-14 16:22:55 +01:00
hibernate.c ARM: use virt_to_idmap() for soft_restart() 2016-02-08 15:48:32 +00:00
hw_breakpoint.c ARM/hw_breakpoint: Fix possible recursive locking for arch_hw_breakpoint_init 2017-06-20 12:25:22 +02:00
hyp-stub.S ARM: align .data section 2017-08-14 16:22:55 +01:00
insn.c
io.c
irq.c ARM: 8499/1: irq: l2c: do not print error in case of missing l2c from 2016-01-26 23:49:02 +00:00
isa.c
iwmmxt.S ARM: align .data section 2017-08-14 16:22:55 +01:00
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 scripts/spelling.txt: add regsiter -> register spelling mistake 2017-05-08 17:15:13 -07:00
machine_kexec.c ARM: kexec: fix failure to boot crash kernel 2017-07-20 11:37:42 +01:00
Makefile Revert "arm: move exports to definitions" 2016-11-23 10:00:03 +00:00
module-plts.c ARM: 8662/1: module: split core and init PLT sections 2017-03-17 10:01:28 +00:00
module.c ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y 2017-05-11 14:43:31 +01:00
module.lds ARM: 8662/1: module: split core and init PLT sections 2017-03-17 10:01:28 +00:00
opcodes.c
paravirt.c arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops 2015-12-21 14:40:54 +00:00
patch.c arm: Prevent hotplug rwsem recursion 2017-05-26 10:10:46 +02:00
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: make of_device_ids const 2017-06-15 11:07:34 +01:00
perf_event_v7.c arm: perf: use builtin_platform_driver 2017-02-03 18:46:42 +00:00
perf_event_xscale.c arm: perf: use builtin_platform_driver 2017-02-03 18:46:42 +00:00
perf_regs.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +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 ARM: 8683/1: ARM32: Support mremap() for sigpage/vDSO 2017-06-21 13:02:58 +01:00
psci_smp.c ARM: use const and __initconst for smp_operations 2015-12-01 22:17:45 +01:00
ptrace.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
reboot.c ARM: soft-reboot into same mode that we entered the kernel 2017-04-09 07:49:24 -07:00
reboot.h ARM: move reboot code to arch/arm/kernel/reboot.c 2015-04-02 09:50:45 +01:00
relocate_kernel.S
return_address.c ARM: 8328/1: remove empty preprocessor #else branch 2015-03-28 16:54:53 +00:00
setup.c ARM: kexec: avoid allocating crashkernel region outside lowmem 2017-07-20 11:37:15 +01:00
signal.c Merge branch 'x86-syscall-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-09-04 11:18:17 -07:00
sigreturn_codes.S
sleep.S ARM: align .data section 2017-08-14 16:22:55 +01:00
smccc-call.S arm: kernel: Add SMC structure parameter 2017-02-03 18:46:33 +00:00
smp_scu.c
smp_tlb.c ARM: 8613/1: Fix the uaccess crash on PB11MPCore 2017-01-16 17:30:46 +00:00
smp_twd.c clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE 2017-06-14 11:58:45 +02:00
smp.c arm: Adjust system_state check 2017-05-23 10:01:35 +02:00
stacktrace.c ARM: 8691/1: Export save_stack_trace_tsk() 2017-09-09 16:26:42 +01:00
suspend.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
swp_emulate.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
sys_arm.c
sys_oabi-compat.c sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> 2017-03-02 08:42:31 +01:00
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
time.c clocksource/drivers: Rename clocksource_probe to timer_probe 2017-06-14 11:59:16 +02:00
topology.c ARM: Convert to using %pOF instead of full_name 2017-08-16 22:25:30 +02:00
traps.c ARM: 8720/1: ensure dump_instr() checks addr_limit 2017-11-06 12:00:38 +00:00
unwind.c
v7m.c
vdso.c ARM: 8683/1: ARM32: Support mremap() for sigpage/vDSO 2017-06-21 13:02:58 +01:00
vmlinux-xip.lds.S debug: Fix __bug_table[] in arch linker scripts 2017-04-03 10:22:40 +02:00
vmlinux.lds.S debug: Fix __bug_table[] in arch linker scripts 2017-04-03 10:22:40 +02:00
xscale-cp0.c ARM: make xscale iwmmxt code multiplatform aware 2015-12-01 21:44:24 +01:00