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Commit e0a5a5d9 authored by Alexander van Heukelum's avatar Alexander van Heukelum Committed by Ingo Molnar
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x86, 64-bit, dwarf2: push pushes 8 bytes and popf pops 8 



The CFI_ADJUST_CFA_OFFSET dwarf2 annotation of a push/popf
pair in ret_from_fork wrongly used a value of 4. It should
have been 8. Fix that.

Signed-off-by: default avatarAlexander van Heukelum <heukelum@fastmail.fm>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: heukelum@fastmail.fm
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 338b9bb3

arch/x86/kernel/entry_64.S

+2 −2
Original line number Diff line number Diff line
@@ -275,9 +275,9 @@ ENTRY(native_usergs_sysret64) 
ENTRY(ret_from_fork)

	CFI_DEFAULT_STACK

	push kernel_eflags(%rip)

	CFI_ADJUST_CFA_OFFSET 4

	CFI_ADJUST_CFA_OFFSET 8

	popf				# reset kernel eflags

	CFI_ADJUST_CFA_OFFSET -4

	CFI_ADJUST_CFA_OFFSET -8

	call schedule_tail

	GET_THREAD_INFO(%rcx)

	testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%rcx)