[Bug 203175] Daily kernel crashes in tcp_twclose <Address 0x1 out of bounds> on 10.2-p2 using VIMAGE

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203175

--- Comment #6 from Palle Girgensohn <girgen at FreeBSD.org> ---
I got a fresh core dump from another machine with the same setup. WITNESS,
VARIANTS etc all turned on.

Attached the quite long out put from "info threads" as well.

We *really* need to find a way to stop our servers from crashing, so any help
appreciated!

(kgdb) bt
#0  doadump (textdump=<value optimized out>) at pcpu.h:219
#1  0xffffffff80945d02 in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:451
#2  0xffffffff809460e5 in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at /usr/src/sys/kern/kern_shutdown.c:758
#3  0xffffffff80945f73 in panic (fmt=0x0) at
/usr/src/sys/kern/kern_shutdown.c:687
#4  0xffffffff80d595cb in trap_fatal (frame=<value optimized out>, eva=<value
optimized out>) at /usr/src/sys/amd64/amd64/trap.c:851
#5  0xffffffff80d598cd in trap_pfault (frame=0xfffffe00003cc700,
usermode=<value optimized out>) at /usr/src/sys/amd64/amd64/trap.c:674
#6  0xffffffff80d58f6a in trap (frame=0xfffffe00003cc700) at
/usr/src/sys/amd64/amd64/trap.c:440
#7  0xffffffff80d3ef72 in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:236
#8  0xffffffff8099487c in turnstile_broadcast (ts=0x0, queue=1) at
/usr/src/sys/kern/subr_turnstile.c:838
#9  0xffffffff80944380 in __rw_wunlock_hard (c=0xfffff803755e9928, tid=1,
file=0x1 <Address 0x1 out of bounds>, line=1) at
/usr/src/sys/kern/kern_rwlock.c:988
#10 0xffffffff80b02b24 in tcp_twclose (tw=<value optimized out>, reuse=<value
optimized out>) at /usr/src/sys/netinet/tcp_timewait.c:540
#11 0xffffffff80b0316b in tcp_tw_2msl_scan (reuse=0) at
/usr/src/sys/netinet/tcp_timewait.c:748
#12 0xffffffff80b00e7e in tcp_slowtimo () at
/usr/src/sys/netinet/tcp_timer.c:198
#13 0xffffffff809b3c74 in pfslowtimo (arg=0x0) at
/usr/src/sys/kern/uipc_domain.c:508
#14 0xffffffff8095bb7b in softclock_call_cc (c=0xffffffff8161bbf0,
cc=0xffffffff81698d00, direct=0) at /usr/src/sys/kern/kern_timeout.c:685
#15 0xffffffff8095bfa4 in softclock (arg=0xffffffff81698d00) at
/usr/src/sys/kern/kern_timeout.c:814
#16 0xffffffff80911c3b in intr_event_execute_handlers (p=<value optimized out>,
ie=0xfffff8010bbabc00) at /usr/src/sys/kern/kern_intr.c:1264
#17 0xffffffff80912086 in ithread_loop (arg=0xfffff801102abf40) at
/usr/src/sys/kern/kern_intr.c:1277
#18 0xffffffff8090f78a in fork_exit (callout=0xffffffff80911ff0 <ithread_loop>,
arg=0xfffff801102abf40, frame=0xfffffe00003ccac0) at
/usr/src/sys/kern/kern_fork.c:1018
#19 0xffffffff80d3f4ae in fork_trampoline () at
/usr/src/sys/amd64/amd64/exception.S:611
#20 0x0000000000000000 in ?? ()
Current language:  auto; currently minimal
(kgdb) info threads

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