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authorLinus Torvalds <torvalds@linux-foundation.org>2016-07-29 14:34:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-29 14:34:55 -0700
commit601f887d6105ddd28dc569a1504595bdf8df8a5b (patch)
tree1b32014100ab43daf743f3b43916f4e050b49a6a
parent574c7e233344b58c6b14b305c93de361d3e7d35d (diff)
parente148d0f85cc3e9f2802c7fcf451098c6d19b535b (diff)
downloadlinux-601f887d6105ddd28dc569a1504595bdf8df8a5b.tar.bz2
Merge tag 'pm-urgent-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki: "Fix a nasty (and really hard to debug) memory corruption during resume from hibernation on x86-64 (that leads to a kernel panic most of the time) due to the use of a stale stack pointer value in FRAME_BEGIN (Josh Poimboeuf)" * tag 'pm-urgent-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: x86/power/64: Fix hibernation return address corruption
-rw-r--r--arch/x86/power/hibernate_asm_64.S4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/power/hibernate_asm_64.S b/arch/x86/power/hibernate_asm_64.S
index 3177c2bc26f6..8eee0e9c93f0 100644
--- a/arch/x86/power/hibernate_asm_64.S
+++ b/arch/x86/power/hibernate_asm_64.S
@@ -24,7 +24,6 @@
#include <asm/frame.h>
ENTRY(swsusp_arch_suspend)
- FRAME_BEGIN
movq $saved_context, %rax
movq %rsp, pt_regs_sp(%rax)
movq %rbp, pt_regs_bp(%rax)
@@ -48,6 +47,7 @@ ENTRY(swsusp_arch_suspend)
movq %cr3, %rax
movq %rax, restore_cr3(%rip)
+ FRAME_BEGIN
call swsusp_save
FRAME_END
ret
@@ -104,7 +104,6 @@ ENTRY(core_restore_code)
/* code below belongs to the image kernel */
.align PAGE_SIZE
ENTRY(restore_registers)
- FRAME_BEGIN
/* go back to the original page tables */
movq %r9, %cr3
@@ -145,6 +144,5 @@ ENTRY(restore_registers)
/* tell the hibernation core that we've just restored the memory */
movq %rax, in_suspend(%rip)
- FRAME_END
ret
ENDPROC(restore_registers)