Date: Fri, 7 Sep 2007 20:20:36 +0200 From: Fabian Keil <freebsd-listen@fabiankeil.de> To: freebsd-current@freebsd.org Subject: Panic in tcp_sackhole_remove Message-ID: <20070907202036.07bb4909@localhost>
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With: FreeBSD tor.fabiankeil.de 7.0-CURRENT
FreeBSD 7.0-CURRENT #2: Sun Aug 19 13:49:56 CEST 2007
fk@tor.fabiankeil.de:/usr/obj/usr/src/sys/DEADEND i386
I just got the following panic (no "panic string" as I
logged into the console afterwards):
db> where
Tracing pid 12 tid 100002 td 0xc2d9cc00
kdb_enter(c0a93473,0,c0aa829c,d9e8ec24,0,...) at kdb_enter+0x32
panic(c0aa829c,c32f8974,0) at panic+0x124
tcp_sackhole_remove(c5506a68,1,c0aa8266,223,c58baca8,...) at tcp_sackhole_r=
emove+0xc5
tcp_free_sackholes(c58baca8,1,c0aa8fed,11d,c5506a68,...) at tcp_free_sackho=
les+0x47
tcp_timer(c55069d8,0,c0a9467b,f8,0,...) at tcp_timer+0xce
softclock(0,0,c0a9008d,471,c2d97c64,...) at softclock+0x299
ithread_loop(c2d9a280,d9e8ed38,c0a8fe01,315,c2d9b558,...) at ithread_loop+0=
x1b5
fork_exit(c0730c40,c2d9a280,d9e8ed38) at fork_exit+0xb8
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip =3D 0, esp =3D 0xd9e8ed70, ebp =3D 0 ---
db> ps
pid ppid pgrp uid state wmesg wchan cmd
41132 1 41131 256 SJ (threaded) tor
100091 S sbwait 0xc66c9ea8 tor
100099 S kqread 0xc7be3200 tor
40872 1 40871 256 RJ (threaded) tor
100090 S sbwait 0xc79ba3d4 tor
100079 RunQ tor
1812 0 0 0 SL geli:w 0xc60c3400 [g_eli[0] zvol/tank/]
1811 0 0 0 SL crypto_r 0xcb567774 [crypto returns]
1810 0 0 0 SL crypto_w 0xcb56774c [crypto]
1131 0 0 0 SL vgeom:io 0xc3247bc8 [vdev:worker ad0s3]
1079 1 1079 0 Ss+ ttyin 0xc2f2e810 getty
1038 1 1038 0 Ss nanslp 0xc0ba7a04 cron
1032 1 1032 25 Ss pause 0xc3076060 sendmail
1026 1 1026 0 Ss select 0xc0bf461c sendmail
827 1 827 0 Ss select 0xc0bf461c sshd
729 1 729 0 Ss select 0xc0bf461c syslogd
672 1 672 0 Ss select 0xc0bf461c devd
469 0 0 0 SL pftm 0xc3c39ab0 [pfpurge]
130 0 0 0 SL zvol:io 0xc300b520 [zvol:worker zvol/ta]
129 0 0 0 SL zfs:(&tq 0xc31959e0 [zil_clean]
128 0 0 0 SL zfs:(&tx 0xc30a892c [txg_thread_enter]
127 0 0 0 SL zfs:(&tx 0xc30a890c [txg_thread_enter]
126 0 0 0 SL zfs:(&tx 0xc30a891c [txg_thread_enter]
124 0 0 0 SL zfs:(&tq 0xc3195914 [spa_zio_intr_5]
123 0 0 0 SL zfs:(&tq 0xc3195848 [spa_zio_issue_5]
122 0 0 0 SL zfs:(&tq 0xc319577c [spa_zio_intr_4]
121 0 0 0 SL zfs:(&tq 0xc31956b0 [spa_zio_issue_4]
120 0 0 0 SL zfs:(&tq 0xc31955e4 [spa_zio_intr_3]
119 0 0 0 SL zfs:(&tq 0xc3195050 [spa_zio_issue_3]
118 0 0 0 SL zfs:(&tq 0xc319511c [spa_zio_intr_2]
117 0 0 0 SL zfs:(&tq 0xc31951e8 [spa_zio_issue_2]
116 0 0 0 SL zfs:(&tq 0xc31952b4 [spa_zio_intr_1]
115 0 0 0 SL zfs:(&tq 0xc3195380 [spa_zio_issue_1]
114 0 0 0 SL zfs:(&tq 0xc319544c [spa_zio_intr_0]
113 0 0 0 SL zfs:(&tq 0xc3195518 [spa_zio_issue_0]
97 0 0 0 SL zfs:(&ar 0xc316916c [arc_reclaim_thread]
96 0 0 0 SL zfs:(&tq 0xc3196050 [system_taskq]
39 0 0 0 SL - 0xc0ba7834 [schedcpu]
38 0 0 0 SL sdflush 0xc0c00304 [softdepflush]
37 0 0 0 SL syncer 0xc0ba782c [syncer]
36 0 0 0 SL vlruwt 0xc3034ab0 [vnlru]
35 0 0 0 SL psleep 0xc0bf4ac4 [bufdaemon]
34 0 0 0 SL pgzero 0xc0c00db8 [pagezero]
33 0 0 0 SL psleep 0xc0c00ad4 [vmdaemon]
32 0 0 0 SL psleep 0xc0c00a9c [pagedaemon]
31 0 0 0 SL waiting_ 0xc0bf6828 [sctp_iterator]
30 0 0 0 WL [irq7: ppc0]
29 0 0 0 WL [irq1: atkbd0]
28 0 0 0 WL [swi0: sio]
27 0 0 0 SL - 0xc2d89a3c [fdc0]
26 0 0 0 SL cooling 0xc2f117d4 [acpi_cooling0]
25 0 0 0 SL tzpoll 0xc0d72d20 [acpi_thermal]
24 0 0 0 WL [irq15: ata1]
23 0 0 0 WL [irq14: ata0]
22 0 0 0 RL [irq12: fxp0 fxp1]
21 0 0 0 WL [irq9: acpi0]
20 0 0 0 WL [swi2: cambio]
19 0 0 0 SL ccb_scan 0xc0b76314 [xpt_thrd]
9 0 0 0 SL - 0xc2e86b80 [kqueue taskq]
18 0 0 0 WL [swi6: task queue]
8 0 0 0 SL - 0xc2e86d00 [acpi_task_2]
7 0 0 0 SL - 0xc2e86d00 [acpi_task_1]
6 0 0 0 SL - 0xc2e86d00 [acpi_task_0]
17 0 0 0 WL [swi6: Giant taskq]
5 0 0 0 SL - 0xc2d99300 [thread taskq]
16 0 0 0 WL [swi5: +]
15 0 0 0 SL - 0xc0ba7834 [yarrow]
4 0 0 0 SL - 0xc0ba58ac [g_down]
3 0 0 0 SL - 0xc0ba58a8 [g_up]
2 0 0 0 SL - 0xc0ba58a0 [g_event]
14 0 0 0 WL [swi1: net]
13 0 0 0 WL [swi3: vm]
12 0 0 0 RL CPU 0 [swi4: clock sio]
11 0 0 0 RL [idle: cpu0]
1 0 1 0 SLs wait 0xc2d9bab0 [init]
10 0 0 0 SL audit_wo 0xc0bffd74 [audit]
0 0 0 0 WLs [swapper]
db> show allpcpu
Current CPU: 0
cpuid =3D 0
curthread =3D 0xc2d9cc00: pid 12 "swi4: clock sio"
curpcb =3D 0xd9e8ed90
fpcurthread =3D none
idlethread =3D 0xc2d9ca00: pid 11 "idle: cpu0"
APIC ID =3D 0
currentldt =3D 0x50
spin locks held:
db> show alllocks
Process 41132 (tor) thread 0xc357be00 (100091)
exclusive sx so_rcv_sx r =3D 0 (0xc66c9e78) locked @ /usr/src/sys/kern/uipc=
_sockbuf.c:145
Process 40872 (tor) thread 0xc6e30000 (100090)
exclusive sx so_rcv_sx r =3D 0 (0xc79ba3a4) locked @ /usr/src/sys/kern/uipc=
_sockbuf.c:145
Process 12 (swi4: clock sio) thread 0xc2d9cc00 (100002)
exclusive sleep mutex inp (tcpinp) r =3D 0 (0xc5506a68) locked @ /usr/src/s=
ys/kern/kern_timeout.c:248
db> show lockedvnods
Locked vnodes
db> trace 41132
Tracing pid 41132 tid 100091 td 0xc357be00
sched_switch(c357be00,0,1,180,26dad554,...) at sched_switch+0x1b6
mi_switch(1,0,c0a96ae6,1bd,0,...) at mi_switch+0x217
sleepq_switch(c357be00,0,c0a96ae6,199,c66c9ea8,...) at sleepq_switch+0xf0
sleepq_catch_signals(c074058d,c0ba93e0,1,c0a921df,58,...) at sleepq_catch_s=
ignals+0x21e
sleepq_wait_sig(c66c9ea8,0,c0a93dde,da,0,...) at sleepq_wait_sig+0x14
_sleep(c66c9ea8,c66c9e60,158,c0a9b8bc,0) at _sleep+0x359
sbwait(c66c9e3c,1,c0a9b9d1,5ae,c66c9e60,...) at sbwait+0x76
soreceive_generic(c66c9dec,dc594be8,dc594bf4,0,0,...) at soreceive_generic+=
0x42f
soreceive(c66c9dec,dc594be8,dc594bf4,0,0,...) at soreceive+0x4d
kern_recvit(c357be00,18,dc594c60,0,0,...) at kern_recvit+0x156
recvit(0,dc594c80,c07a9b88,bf9feec1,1,0,0,dc594c58,1,0,28406e78,0) at recvi=
t+0x31
recvfrom(c357be00,dc594cfc,18,c0a98dee,c0b3f4b8,...) at recvfrom+0x76
syscall(dc594d38) at syscall+0x2b3
Xint0x80_syscall() at Xint0x80_syscall+0x20
--- syscall (29, FreeBSD ELF32, recvfrom), eip =3D 0x283ad807, esp =3D 0xbf=
9fec9c, ebp =3D 0xbf9fecc8 ---
db> trace 40872
Tracing pid 40872 tid 100090 td 0xc6e30000
sched_switch(c6e30000,0,1,180,5cdde984,...) at sched_switch+0x1b6
mi_switch(1,0,c0a96ae6,1bd,0,...) at mi_switch+0x217
sleepq_switch(c6e30000,0,c0a96ae6,199,c79ba3d4,...) at sleepq_switch+0xf0
sleepq_catch_signals(c074058d,c0ba93e0,1,c0a921df,58,...) at sleepq_catch_s=
ignals+0x21e
sleepq_wait_sig(c79ba3d4,0,c0a93dde,da,0,...) at sleepq_wait_sig+0x14
_sleep(c79ba3d4,c79ba38c,158,c0a9b8bc,0) at _sleep+0x359
sbwait(c79ba368,1,c0a9b9d1,5ae,c79ba38c,...) at sbwait+0x76
soreceive_generic(c79ba318,dc4c4be8,dc4c4bf4,0,0,...) at soreceive_generic+=
0x42f
soreceive(c79ba318,dc4c4be8,dc4c4bf4,0,0,...) at soreceive+0x4d
kern_recvit(c6e30000,18,dc4c4c60,0,0,...) at kern_recvit+0x156
recvit(0,dc4c4c80,c07a9b88,bf9feec1,1,0,0,dc4c4c58,1,0,28406e78,0) at recvi=
t+0x31
recvfrom(c6e30000,dc4c4cfc,18,c0a98dee,c0b3f4b8,...) at recvfrom+0x76
syscall(dc4c4d38) at syscall+0x2b3
Xint0x80_syscall() at Xint0x80_syscall+0x20
--- syscall (29, FreeBSD ELF32, recvfrom), eip =3D 0x283ad807, esp =3D 0xbf=
9fec9c, ebp =3D 0xbf9fecc8 ---
db> panic
panic: from debugger
cpuid =3D 0
Uptime: 10d16h52m51s
Cannot dump. No dump device defined.
Automatic reboot in 15 seconds - press a key on the console to abort
I'm aware that a core dump would probably be nice,
but as the system is using ZFS for everything except
the root partition I can't configure a dump device.
I hope this report isn't entirely useless anyway.
Are there any additional db commands I should try
in case the system runs into this one again?
Fabian
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