BETA1 IPv6 crash

[Sergey Kandaurov]

On 7 August 2011 17:11, Tom Vijlbrief <tom.vijlbrief at xs4all.nl> wrote:
> I installed BETA1 in a fresh ubuntu 11.04 KVM virtual machine with the
> new installer.
>
> Major issue I noticed was the missing /home.
>
> It took me quite some time to get IPv6 working in the guest (a Linux
> configuration issue), but now that it works
> BETA1 panics in about 50% of the boot attempts:
>
> testbsd dumped core - see /var/crash/vmcore.0
>
> Sun Aug  7 08:25:28 CEST 2011
>
> FreeBSD testbsd 9.0-BETA1 FreeBSD 9.0-BETA1 #0: Thu Jul 28 16:34:16
> UTC 2011     root at obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
> i386
>
> panic: _mtx_lock_sleep: recursed on non-recursive mutex if_addr_mtx @
> /usr/src/sys/netinet6/mld6.c:1676
>
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[..]
> panic: _mtx_lock_sleep: recursed on non-recursive mutex if_addr_mtx @
> /usr/src/sys/netinet6/mld6.c:1676
>
> cpuid = 0
> KDB: enter: panic
> Uptime: 28s
> Physical memory: 491 MB
> Dumping 45 MB: 30 14
>
> #0  doadump (textdump=1) at pcpu.h:244
> 244     pcpu.h: No such file or directory.
>        in pcpu.h
> (kgdb) #0  doadump (textdump=1) at pcpu.h:244
> #1  0xc0a04965 in kern_reboot (howto=260)
>    at /usr/src/sys/kern/kern_shutdown.c:430
> #2  0xc0a04291 in panic (fmt=Variable "fmt" is not available.
> ) at /usr/src/sys/kern/kern_shutdown.c:595
> #3  0xc09f4a4a in _mtx_lock_sleep (m=0xc35f3a28, tid=3278693824, opts=0,
>    file=0xc0f1ab65 "/usr/src/sys/netinet6/mld6.c", line=1676)
>    at /usr/src/sys/kern/kern_mutex.c:341
> #4  0xc09f4c67 in _mtx_lock_flags (m=0xc35f3a28, opts=0,
>    file=0xc0f1ab65 "/usr/src/sys/netinet6/mld6.c", line=1676)
>    at /usr/src/sys/kern/kern_mutex.c:203
> #5  0xc0bbf007 in mld_set_version (mli=0xc3589a00, version=Variable
> "version" is not available.
> )
>    at /usr/src/sys/netinet6/mld6.c:1676
> #6  0xc0bc0c00 in mld_input (m=0xc3951e00, off=48, icmp6len=24)
>    at /usr/src/sys/netinet6/mld6.c:690
> #7  0xc0ba5696 in icmp6_input (mp=0xc3313a54, offp=0xc3313a68, proto=58)
>    at /usr/src/sys/netinet6/icmp6.c:654
> #8  0xc0bba23a in ip6_input (m=0xc3951e00)
>    at /usr/src/sys/netinet6/ip6_input.c:964
> #9  0xc0ac9b1c in netisr_dispatch_src (proto=10, source=0, m=0xc3951e00)
>    at /usr/src/sys/net/netisr.c:1013
> #10 0xc0ac9da0 in netisr_dispatch (proto=10, m=0xc3951e00)
>    at /usr/src/sys/net/netisr.c:1104
> #11 0xc0abecf1 in ether_demux (ifp=0xc35f3800, m=0xc3951e00)
>    at /usr/src/sys/net/if_ethersubr.c:936
> #12 0xc0abf1b3 in ether_nh_input (m=0xc3951e00)
>    at /usr/src/sys/net/if_ethersubr.c:755
> #13 0xc0ac9b1c in netisr_dispatch_src (proto=9, source=0, m=0xc3951e00)
>    at /usr/src/sys/net/netisr.c:1013
> #14 0xc0ac9da0 in netisr_dispatch (proto=9, m=0xc3951e00)
>    at /usr/src/sys/net/netisr.c:1104
> #15 0xc0abe7f5 in ether_input (ifp=0xc35f3800, m=0xc3951e00)
>    at /usr/src/sys/net/if_ethersubr.c:796
> #16 0xc0672bc9 in lem_handle_rxtx (context=0xc3732000, pending=1)
>    at /usr/src/sys/dev/e1000/if_lem.c:3554
> #17 0xc0a468ab in taskqueue_run_locked (queue=0xc359ca80)
>    at /usr/src/sys/kern/subr_taskqueue.c:306
> #18 0xc0a47307 in taskqueue_thread_loop (arg=0xc37365ec)
>    at /usr/src/sys/kern/subr_taskqueue.c:495
> #19 0xc09d7af8 in fork_exit (callout=0xc0a472a0 <taskqueue_thread_loop>,
>    arg=0xc37365ec, frame=0xc3313d28) at /usr/src/sys/kern/kern_fork.c:941
> #20 0xc0d1d714 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:275
> (kgdb)
>

This is the same as in PR kern/158426.
Can you try the patch from PR followup and report us whether it helps?
Full link to PR with patch:
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/158426

-- 
wbr,
pluknet