Re: pointyhat panic

Last Friday I've got a crash in sowakeup as well, though the stack
trace looks different. I'm unable to reproduce it, but I do have core
saved, if someone wants me to do some post-mortem investigation. Box
is quad-core amd64 running -current as of May 8th. The crash was
observed when I attempted to interrupt parallel make that did access
fair amount of stuff over NFS.

--Artem

Tracing pid 12 tid 100012 td 0xffffff0004460390
_mtx_lock_sleep() at _mtx_lock_sleep+0x4e
clnt_dg_soupcall() at clnt_dg_soupcall+0x168
sowakeup() at sowakeup+0xd9
udp_append() at udp_append+0x20b
udp_input() at udp_input+0x6b5
ip_input() at ip_input+0xaa
swi_net() at swi_net+0xf7
intr_event_execute_handlers() at intr_event_execute_handlers+0x100
ithread_loop() at ithread_loop+0x8e
fork_exit() at fork_exit+0x118
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xfffffff800063d40, rbp = 0 ---


2009/5/11 Pav Lucistnik <pav_at_freebsd.org>:
> panic: mtx_lock() of destroyed mutex _at_ /usr/src/sys/rpc/clnt_vc.c:953
> cpuid = 2
> KDB: enter: panic
> [thread pid 0 tid 100029 ]
> Stopped at      kdb_enter+0x3d: movq    $0,0x3f5fb8(%rip)
> db> bt
> Tracing pid 0 tid 100029 td 0xffffff00018e1000
> kdb_enter() at kdb_enter+0x3d
> panic() at panic+0x17b
> _mtx_lock_flags() at _mtx_lock_flags+0xc5
> clnt_vc_soupcall() at clnt_vc_soupcall+0x273
> sowakeup() at sowakeup+0xf8
> tcp_do_segment() at tcp_do_segment+0x23c9
> tcp_input() at tcp_input+0x9ec
> ip_input() at ip_input+0xbc
> ether_demux() at ether_demux+0x1ed
> ether_input() at ether_input+0x171
> em_rxeof() at em_rxeof+0x201
> em_handle_rxtx() at em_handle_rxtx+0x4b
> taskqueue_run() at taskqueue_run+0x96
> taskqueue_thread_loop() at taskqueue_thread_loop+0x3f
> fork_exit() at fork_exit+0x12a
> fork_trampoline() at fork_trampoline+0xe
> --- trap 0, rip = 0, rsp = 0xffffffff240a6d40, rbp = 0 ---
>
> The box is in kdb on serial console for now. May 9 -CURRENT, I think.
>
> --
> Pav Lucistnik <pav_at_oook.cz>
>              <pav_at_FreeBSD.org>
> A spoonful of curry, garlic and mustard helps the medicine go down...
> and come straight back up again. -- JLE on #angband
>