x86: fix singlestep handling in reenter_kprobe

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Highlight peculiar cases in singles-step kprobe handling.

In reenter_kprobe(), a breakpoint in KPROBE_HIT_SS case can only occur
when single-stepping a breakpoint on which a probe was installed. Since
such probes are single-stepped inline, identifying these cases is
unambiguous. All other cases leading up to KPROBE_HIT_SS are possible
bugs. Identify and WARN_ON such cases.

Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Abhishek Sagar 2008-01-30 13:33:13 +01:00 • committed by Ingo Molnar

parent 0723a69a63

commit fb8830e72d

1 changed files with 13 additions and 15 deletions

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arch/x86/kernel/kprobes.c

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