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Date:      Sat, 12 May 2018 05:12:12 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 228189] shutdown: Fatal trap 9: general protection fault while in kernel mode
Message-ID:  <bug-228189-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D228189

            Bug ID: 228189
           Summary: shutdown: Fatal trap 9: general protection fault while
                    in kernel mode
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: eadler@FreeBSD.org

Created attachment 193313
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D193313&action=
=3Dedit
complete minidump

#10 <signal handler called>
#11 _rw_wlock_cookie (c=3D0xdeadc0dedeadc286,
    file=3D0xffffffff81286e05 "/usr/src/sys/net/if.c", line=3D3646)
    at /usr/src/sys/kern/kern_rwlock.c:279
#12 0xffffffff80c6e48b in if_delmulti_ifma (ifma=3D0xfffff8001f2cfb00)
    at /usr/src/sys/net/if.c:3646
#13 0xffffffff80daf699 in in6m_release (inm=3D<optimized out>)
    at /usr/src/sys/netinet6/in6_mcast.c:545
#14 in6m_release_task (arg=3D<optimized out>)
    at /usr/src/sys/netinet6/in6_mcast.c:617
#15 0xffffffff80bb0c99 in gtaskqueue_run_locked (queue=3D0xfffff80003752b00)
    at /usr/src/sys/kern/subr_gtaskqueue.c:332
#16 0xffffffff80bb0a18 in gtaskqueue_thread_loop (arg=3D<optimized out>)
    at /usr/src/sys/kern/subr_gtaskqueue.c:507
#17 0xffffffff80b2d074 in fork_exit (
    callout=3D0xffffffff80bb0990 <gtaskqueue_thread_loop>,
    arg=3D0xfffffe00bbcc6008, frame=3D0xfffffe00004b9ac0)
    at /usr/src/sys/kern/kern_fork.c:1039
#18 <signal handler called>


Trying to use kgdb results in 228006

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