redonkable/remarkable-linux
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Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/urgent

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This commit is contained in:
Ingo Molnar 2010-03-04 12:27:39 +01:00
parent cf4fee5028 29044ad150
commit 3e75c3b0ca
1 changed files with 8 additions and 2 deletions
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10
arch/x86/kernel/dumpstack_64.c
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@ -120,9 +120,15 @@ fixup_bp_irq_link(unsigned long bp, unsigned long *stack,
{
#ifdef CONFIG_FRAME_POINTER
struct stack_frame *frame = (struct stack_frame *)bp;
unsigned long next;
if (!in_irq_stack(stack, irq_stack, irq_stack_end))
return (unsigned long)frame->next_frame;
if (!in_irq_stack(stack, irq_stack, irq_stack_end)) {
if (!probe_kernel_address(&frame->next_frame, next))
return next;
else
WARN_ONCE(1, "Perf: bad frame pointer = %p in "
"callchain\n", &frame->next_frame);
}
#endif
return bp;
}