Date: Mon, 19 Feb 2018 08:55:52 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 225795] panic: found unreferenced mountpoint when accessing and unmounting snapshots in parallel Message-ID: <bug-225795-3630-TslMYPRFlv@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-225795-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-225795-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225795 --- Comment #4 from commit-hook@freebsd.org --- A commit references this bug: Author: avg Date: Mon Feb 19 08:55:23 UTC 2018 New revision: 329556 URL: https://svnweb.freebsd.org/changeset/base/329556 Log: relax an assert in zfsctl_snapdir_lookup to match r323578 Since r323578 we may remove the last reference to a covered vnode with vrele() instead of vput(). So, v_usecount may be decremented before the vnode is locked and zfsctl_snapdir_lookup may "catch" the vnode with v_usecount of zero and v_holdcnt of one. PR: 225795 Reported by: asomers MFC after: 1 week Changes: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c --=20 You are receiving this mail because: You are the assignee for the bug.=
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