[Bug 231793] panic: [pmc,4965] pm=0xfffff80480ff2400 runcount 0

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Sat Sep 29 16:12:46 UTC 2018


--- Comment #3 from Mark Johnston <markj at FreeBSD.org> ---
I see at least one problem that can probably cause this:
pmc_capture_user_callchain() processes samples with nsamples ==
PMC_SAMPLE_INUSE, but there doesn't seem to be anything preventing
pmc_add_sample() from overwriting such a sample during that processing.

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