[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 <ak@suse.de>
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index ab9b2c4..38a7b2d 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -535,6 +535,8 @@
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 @@
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