Date: Thu, 07 Jul 2011 01:55:47 -0400 From: Mike Tancsa <mike@sentex.net> To: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: panic: spin lock held too long (RELENG_8 from today) Message-ID: <4E154A63.90600@sentex.net>
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I did a buildworld on this box to bring it up to RELENG_8 for the BIND fixes. Unfortunately, the formerly solid box (April 13th kernel) panic'd tonight with Unread portion of the kernel message buffer: spin lock 0xc0b1d200 (sched lock 1) held by 0xc5dac8a0 (tid 100107) too long panic: spin lock held too long cpuid = 0 Uptime: 13h30m4s Physical memory: 2035 MB Its a somewhat busy box taking in mail as well as backups for a few servers over nfs. At the time, it would have been getting about 250Mb/s inbound on its gigabit interface. Full core.txt file at http://www.tancsa.com/core-jul8-2011.txt #0 doadump () at pcpu.h:231 231 pcpu.h: No such file or directory. in pcpu.h (kgdb) #0 doadump () at pcpu.h:231 #1 0xc06fd6d3 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:429 #2 0xc06fd937 in panic (fmt=Variable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:602 #3 0xc06ed95f in _mtx_lock_spin_failed (m=0x0) at /usr/src/sys/kern/kern_mutex.c:490 #4 0xc06ed9e5 in _mtx_lock_spin (m=0xc0b1d200, tid=3312388992, opts=0, file=0x0, line=0) at /usr/src/sys/kern/kern_mutex.c:526 #5 0xc0720254 in sched_add (td=0xc5dac5c0, flags=0) at /usr/src/sys/kern/sched_ule.c:1119 #6 0xc07203f9 in sched_wakeup (td=0xc5dac5c0) at /usr/src/sys/kern/sched_ule.c:1950 #7 0xc07061f8 in setrunnable (td=0xc5dac5c0) at /usr/src/sys/kern/kern_synch.c:499 #8 0xc07362af in sleepq_resume_thread (sq=0xca0da300, td=0xc5dac5c0, pri=Variable "pri" is not available. ) at /usr/src/sys/kern/subr_sleepqueue.c:751 #9 0xc0736e18 in sleepq_signal (wchan=0xc5fafe50, flags=1, pri=0, queue=0) at /usr/src/sys/kern/subr_sleepqueue.c:825 #10 0xc06b6764 in cv_signal (cvp=0xc5fafe50) at /usr/src/sys/kern/kern_condvar.c:422 #11 0xc08eaa0d in xprt_assignthread (xprt=Variable "xprt" is not available. ) at /usr/src/sys/rpc/svc.c:342 #12 0xc08ec502 in xprt_active (xprt=0xc95d9600) at /usr/src/sys/rpc/svc.c:378 #13 0xc08ee051 in svc_vc_soupcall (so=0xc6372ce0, arg=0xc95d9600, waitflag=1) at /usr/src/sys/rpc/svc_vc.c:747 #14 0xc075bbb1 in sowakeup (so=0xc6372ce0, sb=0xc6372d34) at /usr/src/sys/kern/uipc_sockbuf.c:191 #15 0xc08447bc in tcp_do_segment (m=0xcaa8d200, th=0xca6aa824, so=0xc6372ce0, tp=0xc63b4d20, drop_hdrlen=52, tlen=1448, iptos=0 '\0', ti_locked=2) at /usr/src/sys/netinet/tcp_input.c:1775 #16 0xc0847930 in tcp_input (m=0xcaa8d200, off0=20) at /usr/src/sys/netinet/tcp_input.c:1329 #17 0xc07ddaf7 in ip_input (m=0xcaa8d200) at /usr/src/sys/netinet/ip_input.c:787 #18 0xc07b8859 in netisr_dispatch_src (proto=1, source=0, m=0xcaa8d200) at /usr/src/sys/net/netisr.c:859 #19 0xc07b8af0 in netisr_dispatch (proto=1, m=0xcaa8d200) at /usr/src/sys/net/netisr.c:946 #20 0xc07ae5e1 in ether_demux (ifp=0xc56ed800, m=0xcaa8d200) at /usr/src/sys/net/if_ethersubr.c:894 #21 0xc07aeb5f in ether_input (ifp=0xc56ed800, m=0xcaa8d200) at /usr/src/sys/net/if_ethersubr.c:753 #22 0xc09977b2 in nfe_int_task (arg=0xc56ff000, pending=1) at /usr/src/sys/dev/nfe/if_nfe.c:2187 #23 0xc07387ca in taskqueue_run_locked (queue=0xc5702440) at /usr/src/sys/kern/subr_taskqueue.c:248 #24 0xc073895c in taskqueue_thread_loop (arg=0xc56ff130) at /usr/src/sys/kern/subr_taskqueue.c:385 #25 0xc06d1027 in fork_exit (callout=0xc07388a0 <taskqueue_thread_loop>, arg=0xc56ff130, frame=0xc538ed28) at /usr/src/sys/kern/kern_fork.c:861 #26 0xc09a5c24 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:275 (kgdb) -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/
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