Re: pointyhat panic

Pav Lucistnik wrote:
> 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.
> 

This happened again.  The trigger was this (^C of a find on a busy 
netapp volume with a lot of other concurrent nfs traffic to the same 
mountpoint):

pointyhat# find . -name \*.bz2 -mmin -10
^Cnfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
nfs server dumpster:/vol/vol4/pointyhat: not responding
load: 4.54  cmd: find 93357 [rpccon] 11.19u 111.62s 0% 4848k

About 5-10 minutes later the machine panicked.  I'll try updating to a 
newer -CURRENT.

Kris