Date: Tue, 03 Jan 2017 12:17:28 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 215715] cond_test:cond_timedwait_race crashes with SIGSEGV periodically when calling binuptime Message-ID: <bug-215715-8-3cW1FRI03E@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-215715-8@https.bugs.freebsd.org/bugzilla/> References: <bug-215715-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215715 --- Comment #4 from Konstantin Belousov <kib@FreeBSD.org> --- I do not see how the backtrace you posted has anything to do with eventtime= rs.=20 But it might be relevant for timecounter HPET hardware. Please show sysctl kern.timecounter output on your test machine. In fact, I do see an issue in multithreaded program which happens to execute e.g. gettimeofday(2) in two threads in parallel, regardless of your test program. If your machine uses HPET for timecounter, please test the patch attached. In fact, using LAPIC for eventtimers and HPET for timecounter is very weird configuration. Also weird is that there is no HPET in the eventtimers hw l= ist. Is it VM ? Show verbose dmesg. BTW, core file does not have any use outside of your machine. --=20 You are receiving this mail because: You are the assignee for the bug.=
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