Messages in this thread | | | From | Alexander Shishkin <> | Subject | Re: perf: WARNING: kernel/events/core.c:4893 perf_mmap_close | Date | Tue, 23 Aug 2016 20:08:23 +0300 |
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Will Deacon <will.deacon@arm.com> writes:
> Hi Alexander, > > On Fri, Aug 12, 2016 at 08:54:49PM +0300, Alexander Shishkin wrote: >> Yes, I tracked to a race between unmapping and set_output, trying to >> come up with a good fix now. > > Did you get anywhere with this? I think I just hit the same issue with > the intel-pt driver on my broadwell laptop with -rc3+PREEMPT (dump > below) and I'm more than happy to test a fix.
Yes, I posted a patchset [1] this morning that should fix this; if this is PT, 3/3 should suffice.
What's "pt-poker", btw? :)
[1] http://marc.info/?l=linux-kernel&m=147194269031047
Regards, -- Alex
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