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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
arch_timer: Move to generic sched_clock framework
2013-10-09 16:54:10 -07:00
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
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
atags_parse.c
ARM: fix rd_size declaration
2017-07-10 16:32:34 -07:00
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
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
ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr
2014-04-07 12:10:00 +01:00
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
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
…
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
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
ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS
2017-06-18 22:25:16 +01:00
head-common.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
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
ARM: io.c: clean up EXPORT_SYMBOL()s
2014-11-21 15:25:02 +00:00
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
arm: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:15 -07:00
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
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: 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
ARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S
2013-11-30 22:21:00 +00:00
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
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
2017-01-16 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
arm: switch to generic fork/vfork/clone
2012-11-28 22:13:54 -05:00
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
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
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
ARM: 8176/1: Use current_stack_pointer in unwind_backtrace
2014-11-13 23:58:09 +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
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