Re: panic: mtx_lock() of destroyed mutex _at_ /usr/src/sys/net/route.c:1306

In the last episode (Mar 27), Andre Guibert de Bruet said:
> I got this earlier today. I managed to get what appears to be a sane dump:
> 
> Unread portion of the kernel message buffer:
> panic: mtx_lock() of destroyed mutex _at_ /usr/src/sys/net/route.c:1306
> cpuid = 0
> KDB: enter: panic
> Physical memory: 3575 MB
> Dumping 324 MB: 309 293 277 261 245 229 213 197 181 165 149 133 117 101 85 69 53 37 21 5

I just booted today's -current and got the same panic with a similar
stack trace.  I've actually been getting it once a week or so since I
switched to -current in June, but it's bugging me today.

panic: mtx_lock() of destroyed mutex _at_ ../../../net/route.c:1303

#0  doadump () at pcpu.h:195
195	pcpu.h: No such file or directory.
	in pcpu.h
(kgdb) (kgdb) #0  doadump () at pcpu.h:195
#1  0xc05e04cc in boot (howto=260) at ../../../kern/kern_shutdown.c:409
#2  0xc05e0730 in panic (fmt=Variable "fmt" is not available.) at ../../../kern/kern_shutdown.c:563
#3  0xc05d4bf9 in _mtx_lock_flags (m=0x0, opts=0, file=0xc081dd19 "../../../net/route.c", line=1303) at ../../../kern/kern_mutex.c:178
#4  0xc0685521 in rt_check (lrt=0xe74a195c, lrt0=0xe74a1978, dst=0xc5704970) at ../../../net/route.c:1303
#5  0xc068fe1f in arpresolve (ifp=0xc3bd0c00, rt0=0xc613ed98, m=0xc6ad1800, dst=0xc5704970, desten=0xe74a1992 "¡╞D\030¡╞") at ../../../netinet/if_ether.c:373
#6  0xc067a40e in ether_output (ifp=0xc3bd0c00, m=0xc6ad1800, dst=0xc5704970, rt0=0xc613ed98) at ../../../net/if_ethersubr.c:175
#7  0xc06aa585 in ip_output (m=0xc6ad1800, opt=0x0, ro=0xe74a1a0c, flags=Variable "flags" is not available.) at ../../../netinet/ip_output.c:547
#8  0xc06b1fa6 in tcp_output (tp=0xcb477e10) at ../../../netinet/tcp_output.c:1125
#9  0xc06ba534 in tcp_usr_send (so=0xcb4cb7bc, flags=Variable "flags" is not available.) at ../../../netinet/tcp_usrreq.c:839
#10 0xc06370a5 in sosend_generic (so=0xcb4cb7bc, addr=0x0, uio=0xe74a1c60, top=0xc6162e00, control=0x0, flags=0, td=0xcb542600) at ../../../kern/uipc_socket.c:1241
#11 0xc0633784 in sosend (so=0xcb4cb7bc, addr=0x0, uio=0xe74a1c60, top=0x0, control=0x0, flags=0, td=0xcb542600) at ../../../kern/uipc_socket.c:1287
#12 0xc061d16b in soo_write (fp=0xca3dedc8, uio=0xe74a1c60, active_cred=0xc4813700, flags=0, td=0xcb542600) at ../../../kern/sys_socket.c:104
#13 0xc0617785 in dofilewrite (td=0xcb542600, fd=3, fp=0xca3dedc8, auio=0xe74a1c60, offset=-1, flags=0) at file.h:254
#14 0xc0617a18 in kern_writev (td=0xcb542600, fd=3, auio=0xe74a1c60) at ../../../kern/sys_generic.c:404
#15 0xc0617a8f in write (td=0xcb542600, uap=0xe74a1cfc) at ../../../kern/sys_generic.c:320
#16 0xc07acd43 in syscall (frame=0xe74a1d38) at ../../../i386/i386/trap.c:1008
#17 0xc0792a80 in Xint0x80_syscall () at ../../../i386/i386/exception.s:196
#18 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb) 
 
FreeBSD dan.emsphone.com 7.0-CURRENT FreeBSD 7.0-CURRENT #465: Thu Aug  9 09:44:54 CDT 2007     zsh_at_dan.emsphone.com:/usr/src-7/sys/i386/compile/DANSMP  i386



-- 
	Dan Nelson
	dnelson_at_allantgroup.com