Date: Mon, 25 Jun 2018 09:21:35 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229331] panic: refcount == 0 in in6m_release_deferred() Message-ID: <bug-229331-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229331 Bug ID: 229331 Summary: panic: refcount == 0 in in6m_release_deferred() Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: markj@FreeBSD.org I got the following panic shortly after resuming my laptop, when it associated with a local wifi network. This was on r335190, and I haven't seen any relevant-looking commits since then. I can provide more info from the dump if needed. (kgdb) bt #0 __curthread () at ./machine/pcpu.h:226 #1 doadump (textdump=<optimized out>) at /usr/home/markj/src/freebsd-dev/sys/kern/kern_shutdown.c:366 #2 0x0098ec7e in db_dump (dummy=13334586, dummy2=false, dummy3=-1, dummy4=0x18ebb744 "") at /usr/home/markj/src/freebsd-dev/sys/ddb/db_command.c:574 #3 0x0098ea57 in db_command (last_cmdp=<optimized out>, cmd_table=<optimized out>, dopager=<optimized out>) at /usr/home/markj/src/freebsd-dev/sys/ddb/db_command.c:481 #4 0x0098e7b0 in db_command_loop () at /usr/home/markj/src/freebsd-dev/sys/ddb/db_command.c:534 #5 0x009919ed in db_trap (type=3, code=0) at /usr/home/markj/src/freebsd-dev/sys/ddb/db_main.c:252 #6 0x00cb7fee in kdb_trap (type=3, code=0, tf=0x18ebb97c) at /usr/home/markj/src/freebsd-dev/sys/kern/subr_kdb.c:697 #7 0x010261c7 in trap (frame=0x18ebb97c) at /usr/home/markj/src/freebsd-dev/sys/i386/i386/trap.c:712 #8 0xffc0315d in ?? () #9 0x18ebb97c in ?? #10 0x00c6e594 in vpanic (fmt=0x10f0aeb "refcount == %d inm: %p", ap=0x18ebba30 "") at /usr/home/markj/src/freebsd-dev/sys/kern/kern_shutdown.c:852 #11 0x00c6e3a0 in kassert_panic (fmt=0x10f0aeb "refcount == %d inm: %p") at /usr/home/markj/src/freebsd-dev/sys/kern/kern_shutdown.c:749 #12 0x00ea9b3b in in6m_release_deferred (inm=0x198f1080) at /usr/home/markj/src/freebsd-dev/sys/netinet6/in6_mcast.c:628 #13 0x00eaadc2 in in6_leavegroup_locked (inm=0x198f1080, imf=<optimized out>) at /usr/home/markj/src/freebsd-dev/sys/netinet6/in6_mcast.c:1394 #14 0x00eaaf81 in in6_leavegroup (inm=0x198f1080, imf=<optimized out>) at /usr/home/markj/src/freebsd-dev/sys/netinet6/in6_mcast.c:1326 #15 0x00eaaf81 in inp_gcmoptions (ctx=0x1ebf80f4) #16 0x00cb2cfb in epoch_call_task (arg=0x0) at /usr/home/markj/src/freebsd-dev/sys/kern/subr_epoch.c:616 #17 0x00cb6637 in gtaskqueue_run_locked (queue=0x1710c600) at /usr/home/markj/src/freebsd-dev/sys/kern/subr_gtaskqueue.c:332 #18 0x00cb6317 in gtaskqueue_thread_loop (arg=0x17184834) at /usr/home/markj/src/freebsd-dev/sys/kern/subr_gtaskqueue.c:507 #19 0x00c2b17e in fork_exit (callout=0xcb6270 <gtaskqueue_thread_loop>, arg=0x17184834, frame=0x18ebbba8) at /usr/home/markj/src/freebsd-dev/sys/kern/kern_fork.c:1039 -- You are receiving this mail because: You are the assignee for the bug.
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