From 7d0b0e8ddbdda58a852ccff010c0339a38552cc7 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 5 Oct 2006 18:47:22 +0200 Subject: [PATCH] [PATCH] x86-64: Annotate interrupt frame backlink in interrupt handlers Add correct CFI annotation to the backlink on top of the interrupt stack. Signed-off-by: Andi Kleen --- arch/x86_64/kernel/entry.S | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S index ab9b2c4726f2..38a7b2d528e2 100644 --- a/arch/x86_64/kernel/entry.S +++ b/arch/x86_64/kernel/entry.S @@ -535,6 +535,8 @@ END(stub_rt_sigreturn) 1: incl %gs:pda_irqcount cmoveq %gs:pda_irqstackptr,%rsp push %rbp # backlink for old unwinder + CFI_ADJUST_CFA_OFFSET 8 + CFI_REL_OFFSET rbp,0 /* * We entered an interrupt context - irqs are off: */ @@ -1174,6 +1176,7 @@ ENTRY(call_softirq) incl %gs:pda_irqcount cmove %gs:pda_irqstackptr,%rsp push %rbp # backlink for old unwinder + CFI_ADJUST_CFA_OFFSET 8 call __do_softirq leaveq CFI_DEF_CFA_REGISTER rsp -- 2.20.1