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Date:      Fri, 07 Aug 2015 20:32:25 -0500
From:      Larry Rosenman <ler@lerctr.org>
To:        Adrian Chadd <adrian.chadd@gmail.com>
Cc:        freebsd-current <freebsd-current@freebsd.org>
Subject:   Re: traceroute6: panic: pcb not read locked
Message-ID:  <eb2c43750c2649fd5f8f4719bf855227@thebighonker.lerctr.org>
In-Reply-To: <CAJ-Vmok5qzf0y0AtBL6h7XxA4U%2BHuNbigya=j71ijR2hoLvKBg@mail.gmail.com>
References:  <20150808010324.GA1392@borg.lerctr.org> <CAJ-Vmok5qzf0y0AtBL6h7XxA4U%2BHuNbigya=j71ijR2hoLvKBg@mail.gmail.com>

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I got a 2nd one soon after just sitting -- I did JUST update sources, 
turned off ipV6 to update (I seem to be having issues with TWC's IPV6).

Rebuild in process.

I **CAN** give you access to the cores, machine, et al.

I'd LOVE to figure out wtf is wrong on the IPV6 native stuff with TWC.


On 2015-08-07 20:29, Adrian Chadd wrote:
> is it easily reproducable for you there?
> 
> 
> 
> -a
> 
> 
> On 7 August 2015 at 18:04, Larry Rosenman <ler@lerctr.org> wrote:
>> Trying to debug TimeWarner IPV6 to my HE.NET tunnel, and running 
>> traceroute6,
>> got the following panic:
>> 
>> borg.lerctr.org dumped core - see /var/crash/vmcore.0
>> 
>> Fri Aug  7 19:58:40 CDT 2015
>> 
>> FreeBSD borg.lerctr.org 11.0-CURRENT FreeBSD 11.0-CURRENT #32 r286338: 
>> Wed Aug  5 15:57:55 CDT 2015     
>> root@borg.lerctr.org:/usr/obj/usr/src/sys/VT-LER  amd64
>> 
>> panic: Lock tcp not read locked @ /usr/src/sys/netinet/tcp_subr.c:1189
>> 
>> GNU gdb 6.1.1 [FreeBSD]
>> Copyright 2004 Free Software Foundation, Inc.
>> GDB is free software, covered by the GNU General Public License, and 
>> you are
>> welcome to change it and/or distribute copies of it under certain 
>> conditions.
>> Type "show copying" to see the conditions.
>> There is absolutely no warranty for GDB.  Type "show warranty" for 
>> details.
>> This GDB was configured as "amd64-marcel-freebsd"...
>> 
>> Unread portion of the kernel message buffer:
>> panic: Lock tcp not read locked @ /usr/src/sys/netinet/tcp_subr.c:1189
>> 
>> cpuid = 2
>> KDB: stack backtrace:
>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 
>> 0xfffffe2dfc3ef400
>> vpanic() at vpanic+0x189/frame 0xfffffe2dfc3ef480
>> panic() at panic+0x43/frame 0xfffffe2dfc3ef4e0
>> __rw_assert() at __rw_assert+0x154/frame 0xfffffe2dfc3ef4f0
>> tcp_notify() at tcp_notify+0x2d/frame 0xfffffe2dfc3ef520
>> in6_pcbnotify() at in6_pcbnotify+0x2a0/frame 0xfffffe2dfc3ef5b0
>> tcp6_ctlinput() at tcp6_ctlinput+0xf4/frame 0xfffffe2dfc3ef650
>> icmp6_input() at icmp6_input+0x1737/frame 0xfffffe2dfc3ef7f0
>> ip6_input() at ip6_input+0x4a2/frame 0xfffffe2dfc3ef8d0
>> netisr_dispatch_src() at netisr_dispatch_src+0x86/frame 
>> 0xfffffe2dfc3ef940
>> ether_demux() at ether_demux+0x176/frame 0xfffffe2dfc3ef970
>> ether_nh_input() at ether_nh_input+0x33a/frame 0xfffffe2dfc3ef9b0
>> netisr_dispatch_src() at netisr_dispatch_src+0x86/frame 
>> 0xfffffe2dfc3efa20
>> ether_input() at ether_input+0x4f/frame 0xfffffe2dfc3efa50
>> if_input() at if_input+0xa/frame 0xfffffe2dfc3efa60
>> em_rxeof() at em_rxeof+0x27f/frame 0xfffffe2dfc3efae0
>> em_handle_que() at em_handle_que+0x40/frame 0xfffffe2dfc3efb20
>> taskqueue_run_locked() at taskqueue_run_locked+0xf0/frame 
>> 0xfffffe2dfc3efb80
>> taskqueue_thread_loop() at taskqueue_thread_loop+0x88/frame 
>> 0xfffffe2dfc3efbb0
>> fork_exit() at fork_exit+0x84/frame 0xfffffe2dfc3efbf0
>> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe2dfc3efbf0
>> --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
>> Uptime: 19m58s
>> Dumping 2903 out of 64454 
>> MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%
>> 
>> Reading symbols from /boot/kernel/linux.ko.symbols...done.
>> Loaded symbols for /boot/kernel/linux.ko.symbols
>> Reading symbols from /boot/kernel/linux_common.ko.symbols...done.
>> Loaded symbols for /boot/kernel/linux_common.ko.symbols
>> Reading symbols from /boot/kernel/if_lagg.ko.symbols...done.
>> Loaded symbols for /boot/kernel/if_lagg.ko.symbols
>> Reading symbols from /boot/kernel/snd_envy24ht.ko.symbols...done.
>> Loaded symbols for /boot/kernel/snd_envy24ht.ko.symbols
>> Reading symbols from /boot/kernel/snd_spicds.ko.symbols...done.
>> Loaded symbols for /boot/kernel/snd_spicds.ko.symbols
>> Reading symbols from /boot/kernel/coretemp.ko.symbols...done.
>> Loaded symbols for /boot/kernel/coretemp.ko.symbols
>> Reading symbols from /boot/kernel/ichsmb.ko.symbols...done.
>> Loaded symbols for /boot/kernel/ichsmb.ko.symbols
>> Reading symbols from /boot/kernel/smbus.ko.symbols...done.
>> Loaded symbols for /boot/kernel/smbus.ko.symbols
>> Reading symbols from /boot/kernel/ichwd.ko.symbols...done.
>> Loaded symbols for /boot/kernel/ichwd.ko.symbols
>> Reading symbols from /boot/kernel/cpuctl.ko.symbols...done.
>> Loaded symbols for /boot/kernel/cpuctl.ko.symbols
>> Reading symbols from /boot/kernel/cryptodev.ko.symbols...done.
>> Loaded symbols for /boot/kernel/cryptodev.ko.symbols
>> Reading symbols from /boot/kernel/dtraceall.ko.symbols...done.
>> Loaded symbols for /boot/kernel/dtraceall.ko.symbols
>> Reading symbols from /boot/kernel/profile.ko.symbols...done.
>> Loaded symbols for /boot/kernel/profile.ko.symbols
>> Reading symbols from /boot/kernel/dtrace.ko.symbols...done.
>> Loaded symbols for /boot/kernel/dtrace.ko.symbols
>> Reading symbols from 
>> /boot/kernel/systrace_freebsd32.ko.symbols...done.
>> Loaded symbols for /boot/kernel/systrace_freebsd32.ko.symbols
>> Reading symbols from /boot/kernel/systrace.ko.symbols...done.
>> Loaded symbols for /boot/kernel/systrace.ko.symbols
>> Reading symbols from /boot/kernel/sdt.ko.symbols...done.
>> Loaded symbols for /boot/kernel/sdt.ko.symbols
>> Reading symbols from /boot/kernel/fasttrap.ko.symbols...done.
>> Loaded symbols for /boot/kernel/fasttrap.ko.symbols
>> Reading symbols from /boot/kernel/fbt.ko.symbols...done.
>> Loaded symbols for /boot/kernel/fbt.ko.symbols
>> Reading symbols from /boot/kernel/dtnfscl.ko.symbols...done.
>> Loaded symbols for /boot/kernel/dtnfscl.ko.symbols
>> Reading symbols from /boot/kernel/dtmalloc.ko.symbols...done.
>> Loaded symbols for /boot/kernel/dtmalloc.ko.symbols
>> Reading symbols from /boot/modules/nvidia.ko...done.
>> Loaded symbols for /boot/modules/nvidia.ko
>> Reading symbols from /boot/kernel/ipmi.ko.symbols...done.
>> Loaded symbols for /boot/kernel/ipmi.ko.symbols
>> Reading symbols from /boot/kernel/ipmi_linux.ko.symbols...done.
>> Loaded symbols for /boot/kernel/ipmi_linux.ko.symbols
>> Reading symbols from /boot/kernel/radeonkms.ko.symbols...done.
>> Loaded symbols for /boot/kernel/radeonkms.ko.symbols
>> Reading symbols from /boot/kernel/iicbb.ko.symbols...done.
>> Loaded symbols for /boot/kernel/iicbb.ko.symbols
>> Reading symbols from /boot/kernel/iicbus.ko.symbols...done.
>> Loaded symbols for /boot/kernel/iicbus.ko.symbols
>> Reading symbols from /boot/kernel/iic.ko.symbols...done.
>> Loaded symbols for /boot/kernel/iic.ko.symbols
>> Reading symbols from /boot/kernel/drm2.ko.symbols...done.
>> Loaded symbols for /boot/kernel/drm2.ko.symbols
>> Reading symbols from 
>> /boot/kernel/radeonkmsfw_R100_cp.ko.symbols...done.
>> Loaded symbols for /boot/kernel/radeonkmsfw_R100_cp.ko.symbols
>> Reading symbols from /boot/kernel/uhid.ko.symbols...done.
>> Loaded symbols for /boot/kernel/uhid.ko.symbols
>> Reading symbols from /boot/kernel/linux64.ko.symbols...done.
>> Loaded symbols for /boot/kernel/linux64.ko.symbols
>> Reading symbols from /boot/kernel/pf.ko.symbols...done.
>> Loaded symbols for /boot/kernel/pf.ko.symbols
>> #0  doadump (textdump=1) at pcpu.h:221
>> 221     pcpu.h: No such file or directory.
>>         in pcpu.h
>> (kgdb) #0  doadump (textdump=1) at pcpu.h:221
>> #1  0xffffffff80b2b255 in kern_reboot (howto=260)
>>     at /usr/src/sys/kern/kern_shutdown.c:329
>> #2  0xffffffff80b2b848 in vpanic (fmt=<value optimized out>,
>>     ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:626
>> #3  0xffffffff80b2b893 in panic (fmt=0x0)
>>     at /usr/src/sys/kern/kern_shutdown.c:557
>> #4  0xffffffff80b29764 in __rw_assert (c=0x0, what=<value optimized 
>> out>,
>>     file=0x0, line=0) at /usr/src/sys/kern/kern_rwlock.c:1183
>> #5  0xffffffff80ceba5d in tcp_notify (inp=0xfffff80090798960, 
>> error=61)
>>     at /usr/src/sys/netinet/tcp_subr.c:1189
>> #6  0xffffffff80d0cd20 in in6_pcbnotify (pcbinfo=<value optimized 
>> out>,
>>     dst=0xfffffe2dfc3ef720, fport_arg=13568, src=<value optimized 
>> out>,
>>     lport_arg=<value optimized out>, cmd=<value optimized out>,
>>     notify=0xffffffff80ceba30 <tcp_notify>)
>>     at /usr/src/sys/netinet6/in6_pcb.c:679
>> #7  0xffffffff80cebf24 in tcp6_ctlinput (cmd=10, 
>> sa=0xfffffe2dfc3ef720,
>>     d=0xfffffe2dfc3ef6d8) at /usr/src/sys/netinet/tcp_subr.c:1641
>> #8  0xffffffff80cfc607 in icmp6_input (mp=<value optimized out>,
>>     offp=0xfffffe2dfc3ef81c, proto=0) at 
>> /usr/src/sys/netinet6/icmp6.c:1155
>> #9  0xffffffff80d10f72 in ip6_input (m=0xfffff80049c65100)
>>     at /usr/src/sys/netinet6/ip6_input.c:810
>> #10 0xffffffff80c10026 in netisr_dispatch_src (proto=<value optimized 
>> out>,
>>     source=<value optimized out>, m=0xfffff80049c65100)
>>     at /usr/src/sys/net/netisr.c:972
>> #11 0xffffffff80c06ec6 in ether_demux (ifp=<value optimized out>,
>>     m=<value optimized out>) at /usr/src/sys/net/if_ethersubr.c:768
>> #12 0xffffffff80c07b7a in ether_nh_input (m=<value optimized out>)
>>     at /usr/src/sys/net/if_ethersubr.c:575
>> #13 0xffffffff80c10026 in netisr_dispatch_src (proto=<value optimized 
>> out>,
>>     source=<value optimized out>, m=0xfffff80049c65100)
>>     at /usr/src/sys/net/netisr.c:972
>> #14 0xffffffff80c071af in ether_input (ifp=0xfffff8002c6d5800, m=0x0)
>>     at /usr/src/sys/net/if_ethersubr.c:676
>> #15 0xffffffff80c03f4a in if_input (ifp=0x0, sendmp=0x0)
>>     at /usr/src/sys/net/if.c:3847
>> #16 0xffffffff8061d01f in em_rxeof (count=99)
>>     at /usr/src/sys/dev/e1000/if_em.c:4666
>> #17 0xffffffff8061c940 in em_handle_que (context=0xfffffe1ea96cb000,
>>     pending=<value optimized out>) at 
>> /usr/src/sys/dev/e1000/if_em.c:1564
>> #18 0xffffffff80b78ca0 in taskqueue_run_locked 
>> (queue=0xfffff8002c6d4300)
>>     at /usr/src/sys/kern/subr_taskqueue.c:430
>> #19 0xffffffff80b79778 in taskqueue_thread_loop (arg=<value optimized 
>> out>)
>>     at /usr/src/sys/kern/subr_taskqueue.c:683
>> #20 0xffffffff80af2154 in fork_exit (
>>     callout=0xffffffff80b796f0 <taskqueue_thread_loop>,
>>     arg=0xfffffe1ea96cd730, frame=0xfffffe2dfc3efc00)
>>     at /usr/src/sys/kern/kern_fork.c:1006
>> #21 0xffffffff80f514ce in fork_trampoline ()
>>     at /usr/src/sys/amd64/amd64/exception.S:610
>> #22 0x0000000000000000 in ?? ()
>> Current language:  auto; currently minimal
>> (kgdb)
>> 
>> 
>> Core *IS* available.
>> 
>> FreeBSD borg.lerctr.org 11.0-CURRENT FreeBSD 11.0-CURRENT #32 r286338: 
>> Wed Aug  5 15:57:55 CDT 2015     
>> root@borg.lerctr.org:/usr/obj/usr/src/sys/VT-LER  amd64 1100077 
>> 1100077
>> 
>> 
>> 11.0-CURRENT
>> --
>> Larry Rosenman                     http://www.lerctr.org/~ler
>> Phone: +1 214-642-9640                 E-Mail: ler@lerctr.org
>> US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961
>> _______________________________________________
>> freebsd-current@freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-current
>> To unsubscribe, send any mail to 
>> "freebsd-current-unsubscribe@freebsd.org"

-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler@lerctr.org
US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961




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