Messages in this thread | | | Date | Fri, 18 Apr 2014 10:07:16 +0200 | From | Ingo Molnar <> | Subject | Re: [tip:x86/urgent] x86/mce: Fix CMCI preemption bugs |
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* Borislav Petkov <bp@alien8.de> wrote:
> On Thu, Apr 17, 2014 at 11:30:12PM +0200, Borislav Petkov wrote: > > This is most likely unrelated and is caused by the preemption checks > > added to __this_cpu_* in 188a81409ff7. If you'd like to debug this > > further, please send a full dmesg: > > > > dmesg > dmesg.log > > > > Privately is fine too. > > Ok, thanks for the dmesg. Replying to the thread with everybody: > > The splat Owen is seeing is the same as this one at the beginning of > this thread here: > > http://lkml.kernel.org/r/8761m7lm3j.fsf@canonical.com > > which has a viable fix. Btw, those two splats happen on HP notebooks. > > Ok, good, I think we're all solved. Phew :-) > > Thanks to all for their help.
Okay, so AFAICS the fix in x86/urgent isn't wrong functionally, it's just that the changelog incorrectly claims the raw-spinlock use is a bug causing a problem here.
Still that raw spinlock is bogus and might be hiding other problems, so we can keep the x86/urgent change (ea431643d6c3) as-is and I'll get it to Linus later today ...
Thanks,
Ingo
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