Messages in this thread | | | Date | Sat, 16 Mar 2013 18:06:13 -0400 | Subject | Re: [PATCH] perf,x86: fix kernel crash with PEBS/BTS after suspend/resume | From | Parag Warudkar <> |
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On Sat, Mar 16, 2013 at 1:56 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Sat, Mar 16, 2013 at 9:11 AM, Parag Warudkar <parag.lkml@gmail.com> wrote: >> >> This seems to trigger a WARN_ON during suspend/resume. > > Ugh, yes. It's practically harmless, but it's ugly and technically > wrong (we're using wrmsr_on_cpu() on our current cpu, but in a context > where using it on anything else would be horribly broken). > > I think the attached patch should fix it. UNTESTED!
Applied and that seems to have suppressed the warning.
Unrelated to this now it dies in intel_pstate_timer_func doing what seems to be a divide by zero.
Hopefully I will be able to capture the oops on camera next time.
Thanks, Parag
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