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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-30 00:34:55 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-30 00:34:55 +0300 |
| commit | 601f887d6105ddd28dc569a1504595bdf8df8a5b (patch) | |
| tree | 1b32014100ab43daf743f3b43916f4e050b49a6a | |
| parent | 574c7e233344b58c6b14b305c93de361d3e7d35d (diff) | |
| parent | e148d0f85cc3e9f2802c7fcf451098c6d19b535b (diff) | |
| download | linux-601f887d6105ddd28dc569a1504595bdf8df8a5b.tar.xz | |
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.S | 4 |
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) |