Date: Mon, 21 Mar 2022 15:29:27 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 262587] panic: lock (sleep mutex) umtxql not locked @ /usr/src/sys/sys/umtxvar.h:262 on 14-current master-n253798-8cdecdecb43 Message-ID: <bug-262587-227-KUXZy0hS5R@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-262587-227@https.bugs.freebsd.org/bugzilla/> References: <bug-262587-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D262587 --- Comment #10 from Mark Johnston <markj@FreeBSD.org> --- There is an instance of FUTEX_CMP_REQUEUE (op 132). This operation moves sleeping threads from one umtx queue to another, possibly changing the queue keys in the process. This is implemented by umtx_requeue(), not used by the native umtx interface in FreeBSD. So this can certainly lead to the bug, s= ince umtxq_sleep() does not expect the queue hash to change. --=20 You are receiving this mail because: You are the assignee for the bug.=
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