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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-09-13 09:05:22 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-09-13 09:05:22 +0800 |
| commit | 8507876aaada8a2cf68ebccdf1d056465dd1fc11 (patch) | |
| tree | ae8a028afcf5131dcf99d2fb31564524f05507e4 /arch/arm/lib/putuser.S | |
| parent | 22b4e63ebe062e2e3d4a3a2b468e47ca9575d598 (diff) | |
| parent | beafa0de3d3e0d0ece7638cded879815f359f1cb (diff) | |
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
"It's been a while... so there's a little more here than normal.
Mostly updates from Will for the breakpoint stuff, and plugging a few
holes in the user access functions which crept in when domain support
was disabled for ARMv7 CPUs."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7529/1: delay: set loops_per_jiffy when moving to timer-based loop
ARM: 7528/1: uaccess: annotate [__]{get,put}_user functions with might_fault()
ARM: 7527/1: uaccess: explicitly check __user pointer when !CPU_USE_DOMAINS
ARM: 7526/1: traps: send SIGILL if get_user fails on undef handling path
ARM: 7521/1: Fix semihosting Kconfig text
ARM: 7513/1: Make sure dtc is built before running it
ARM: 7512/1: Fix XIP build due to PHYS_OFFSET definition moving
ARM: 7499/1: mm: Fix vmalloc overlap check for !HIGHMEM
ARM: 7503/1: mm: only flush both pmd entries for classic MMU
ARM: 7502/1: contextidr: avoid using bfi instruction during notifier
ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores
ARM: 7497/1: hw_breakpoint: allow single-byte watchpoints on all addresses
ARM: 7496/1: hw_breakpoint: don't rely on dfsr to show watchpoint access type
ARM: Fix ioremap() of address zero
Diffstat (limited to 'arch/arm/lib/putuser.S')
| -rw-r--r-- | arch/arm/lib/putuser.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/lib/putuser.S b/arch/arm/lib/putuser.S index 7db25990c589..3d73dcb959b0 100644 --- a/arch/arm/lib/putuser.S +++ b/arch/arm/lib/putuser.S @@ -16,6 +16,7 @@ * __put_user_X * * Inputs: r0 contains the address + * r1 contains the address limit, which must be preserved * r2, r3 contains the value * Outputs: r0 is the error code * lr corrupted @@ -27,16 +28,19 @@ * Note also that it is intended that __put_user_bad is not global. */ #include <linux/linkage.h> +#include <asm/assembler.h> #include <asm/errno.h> #include <asm/domain.h> ENTRY(__put_user_1) + check_uaccess r0, 1, r1, ip, __put_user_bad 1: TUSER(strb) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_1) ENTRY(__put_user_2) + check_uaccess r0, 2, r1, ip, __put_user_bad mov ip, r2, lsr #8 #ifdef CONFIG_THUMB2_KERNEL #ifndef __ARMEB__ @@ -60,12 +64,14 @@ ENTRY(__put_user_2) ENDPROC(__put_user_2) ENTRY(__put_user_4) + check_uaccess r0, 4, r1, ip, __put_user_bad 4: TUSER(str) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_4) ENTRY(__put_user_8) + check_uaccess r0, 8, r1, ip, __put_user_bad #ifdef CONFIG_THUMB2_KERNEL 5: TUSER(str) r2, [r0] 6: TUSER(str) r3, [r0, #4] |