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Message-ID: <4255B6D2.7050102@engr.sgi.com>
Date: Thu, 07 Apr 2005 15:40:18 -0700
From: Jay Lan <jlan@engr.sgi.com>
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To: johnpol@2ka.mipt.ru
Cc: Andrew Morton <akpm@osdl.org>,
       Guillaume Thouvenin <guillaume.thouvenin@bull.net>, greg@kroah.com,
       linux-kernel@vger.kernel.org, efocht@hpce.nec.com, linuxram@us.ibm.com,
       gh@us.ibm.com, elsa-devel@lists.sourceforge.net, aquynh@gmail.com,
       dean-list-linux-kernel@arctic.org, pj@sgi.com
Subject: Re: [patch 2.6.12-rc1-mm4] fork_connector: add a fork connector
References: <1112277542.20919.215.camel@frecb000711.frec.bull.fr>	 <20050331144428.7bbb4b32.akpm@osdl.org>  <424C9177.1070404@engr.sgi.com> <1112341968.9334.109.camel@uganda>
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Hi Evgeniy,

Should i be concerned about this bugcheck?

I have seen this happening a number of times, all with the same signature
in my testing. I ran a mix of AIM7,  ubench,  fork-test (continuously 
fork new
processes), and another program reading from the fork connector socket.

Thanks,
 - jay



cqueue/1[656]: bugcheck! 0 [1]
Modules linked in: nfs lockd sunrpc sg st sr_mod ipv6 usbcore

Pid: 656, CPU 1, comm:             cqueue/1
psr : 00001010085a6010 ifs : 8000000000000289 ip  : 
[<a0000001005cee50>]    Not tainted
ip is at __kfree_skb+0x1b0/0x220
unat: 0000000000000000 pfs : 0000000000000289 rsc : 0000000000000003
rnat: 0000000000000000 bsps: 0000000000000000 pr  : 0000000000009641
ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c8a70433f
csd : 0000000000000000 ssd : 0000000000000000
b0  : a0000001005cee50 b6  : a00000010000e7e0 b7  : a0000001003ae440
f6  : 0fffbccccccccc8c00000 f7  : 0ffdaa200000000000000
f8  : 100008000000000000000 f9  : 10002a000000000000000
f10 : 0fffcccccccccc8c00000 f11 : 1003e0000000000000000
r1  : a000000100c0ec00 r2  : 0000000000004000 r3  : 0000000000004000
r8  : 0000000000000028 r9  : a0000001008eaac8 r10 : 0000000000000004
r11 : 0000000000000028 r12 : e00000307a99fd60 r13 : e00000307a998000
r14 : a000000100887c00 r15 : a000000100a24b18 r16 : a000000100a22e18
r17 : ffffffffffffffff r18 : a000000100887bec r19 : a000000100a9080f
r20 : 0000000000003517 r21 : 00000000000fffff r22 : 0000000000000034
r23 : 0000000000000034 r24 : a000000100a90810 r25 : 0000000000003518
r26 : 0000000000003518 r27 : 00000010085a6010 r28 : a000000100a90811
r29 : 0000000000003519 r30 : 0000000000000000 r31 : a000000100a24ae8

Call Trace:
 [<a0000001000126a0>] show_stack+0x80/0xa0
                                sp=e00000307a99f920 bsp=e00000307a999078
 [<a000000100012f00>] show_regs+0x840/0x880
                                sp=e00000307a99faf0 bsp=e00000307a999018
 [<a000000100034890>] die+0x150/0x1c0
                                sp=e00000307a99fb00 bsp=e00000307a998fd0
 [<a000000100034940>] die_if_kernel+0x40/0x60
                                sp=e00000307a99fb00 bsp=e00000307a998fa0
 [<a000000100035d20>] ia64_bad_break+0x300/0x380
                                sp=e00000307a99fb00 bsp=e00000307a998f78
 [<a00000010000b5e0>] ia64_leave_kernel+0x0/0x280
                                sp=e00000307a99fb90 bsp=e00000307a998f78
 [<a0000001005cee50>] __kfree_skb+0x1b0/0x220
                                sp=e00000307a99fd60 bsp=e00000307a998f30
 [<a00000010044f630>] kfree_skb+0x50/0xa0
                                sp=e00000307a99fd60 bsp=e00000307a998f10
 [<a00000010044e400>] cn_queue_wrapper+0xe0/0x100
                                sp=e00000307a99fd60 bsp=e00000307a998ee8
 [<a0000001000cb880>] worker_thread+0x3e0/0x520
                                sp=e00000307a99fd60 bsp=e00000307a998e60
 [<a0000001000d7210>] kthread+0x290/0x300
                                sp=e00000307a99fdd0 bsp=e00000307a998e20
 [<a000000100010a00>] kernel_thread_helper+0xe0/0x100
                                sp=e00000307a99fe30 bsp=e00000307a998df0
 [<a000000100009120>] start_kernel_thread+0x20/0x40
                                sp=e00000307a99fe30 bsp=e00000307a998df0
 


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