Date: Wed, 20 Jun 2007 05:12:03 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: freebsd-current@freebsd.org Subject: Panic in callout_reset() Message-ID: <20070619191203.GA1167@turion.vk2pj.dyndns.org>
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Running: FreeBSD 7.0-CURRENT #5: Sat Jun 9 18:29:40 EST 2007
root@server.vk2pj.dyndns.org:/var/obj/k7/usr/src/sys/server
Panic String: Bad tailq NEXT(0xcce421a8->tqh_last) != NULL
#0 doadump () at pcpu.h:195
#1 0xc04524a9 in db_fncall (dummy1=0xc0576aa2, dummy2=0x0, dummy3=0x1, dummy4=0xd3b23a3c "")
at /usr/src/sys/ddb/db_command.c:486
#2 0xc0452a15 in db_command_loop () at /usr/src/sys/ddb/db_command.c:401
#3 0xc0454195 in db_trap (type=0x3, code=0x0) at /usr/src/sys/ddb/db_main.c:222
#4 0xc0576943 in kdb_trap (type=0x3, code=0x0, tf=0xd3b23bd4) at /usr/src/sys/kern/subr_kdb.c:502
#5 0xc06d4d4b in trap (frame=0xd3b23bd4) at /usr/src/sys/i386/i386/trap.c:620
#6 0xc06c21db in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7 0xc0576aa2 in kdb_enter (msg=0xc0719d31 "panic") at cpufunc.h:60
#8 0xc0550035 in panic (fmt=0xc06fdb26 "Bad tailq NEXT(%p->tqh_last) != NULL")
at /usr/src/sys/kern/kern_shutdown.c:547
#9 0xc056180a in callout_reset (c=0xc07ec000, to_ticks=0xa, ftn=0xc063fd30 <nfsrv_timer>, arg=0x0)
at /usr/src/sys/kern/kern_timeout.c:477
#10 0xc063fde4 in nfsrv_timer (arg=0x0) at /usr/src/sys/nfsserver/nfs_srvsock.c:815
#11 0xc0561f1e in softclock (dummy=0x0) at /usr/src/sys/kern/kern_timeout.c:280
#12 0xc0534485 in ithread_loop (arg=0xc2926670) at /usr/src/sys/kern/kern_intr.c:1036
#13 0xc0531a57 in fork_exit (callout=0xc05342d0 <ithread_loop>, arg=0xc2926670, frame=0xd3b23d38)
at /usr/src/sys/kern/kern_fork.c:787
#14 0xc06c2250 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:205
'c' in callout_reset looks like:
(kgdb) p *c
$1 = {
c_links = {
sle = {
sle_next = 0xc07e5e08
},
tqe = {
tqe_next = 0xc07e5e08,
tqe_prev = 0xcce42158
}
},
c_time = 0x3230ae73,
c_arg = 0x0,
c_func = 0xc063fd30 <nfsrv_timer>,
c_mtx = 0x0,
c_flags = 0x16
}
(kgdb) p *$1.c_links.tqe.tqe_next
$3 = {
c_links = {
sle = {
sle_next = 0x0
},
tqe = {
tqe_next = 0x0,
tqe_prev = 0xcce42158
}
},
c_time = 0x3230ae69,
c_arg = 0x0,
c_func = 0xc0605f80 <tcp_isn_tick>,
c_mtx = 0x0,
c_flags = 0x16
}
(kgdb) p *$1.c_links.tqe.tqe_prev
$5 = (struct callout *) 0xc07e5e08
Any suggestions?
--
Peter Jeremy
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