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Subject: [Bug 204949] panic: mtx_lock of spin mutex @
 /usr/src/head/sys/kern/vfs_subr.c:512
Date: Wed, 02 Dec 2015 00:00:00 +0000
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 11.0-CURRENT
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X-Bugzilla-Severity: Affects Only Me
X-Bugzilla-Who: junovitch@freebsd.org
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204949

            Bug ID: 204949
           Summary: panic: mtx_lock of spin mutex @
                    /usr/src/head/sys/kern/vfs_subr.c:512
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: junovitch@freebsd.org

Recent updates on HEAD have been causing panics for me.  I had 4 before I
reverted to an older boot environment on this ZFS only/ZFS-on-root machine.

GOOD (2 weeks ago):
FreeBSD xts-bsd.pa-us.unovitch.com 11.0-CURRENT FreeBSD 11.0-CURRENT #0
r290834M: Sun Nov 15 04:18:50 UTC 2015    
jason@xts-bsd.pa-us.unovitch.com:/usr/obj/usr/src/head/sys/GENERIC  amd64

BAD:
FreeBSD xts-bsd.pa-us.unovitch.com 11.0-CURRENT FreeBSD 11.0-CURRENT #0
r291461M: Mon Nov 30 00:13:05 UTC 2015    
jason@xts-bsd.pa-us.unovitch.com:/usr/obj/usr/src/head/sys/VIMAGE  amd64

The only relevant change for the "M" is some coretemp changes.  Nothing related
to vfs.
M       share/man/man4/coretemp.4
M       sys/dev/coretemp/coretemp.c

Additional details forthcoming.

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