linux-kernel - [BUG] 2.6.24-rc3-mm2 soft lockup while running tbench

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Message-ID: <474D7C32.1070809@linux.vnet.ibm.com>
Date:	Wed, 28 Nov 2007 20:03:22 +0530
From:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Andy Whitcroft <apw@...dowen.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: [BUG] 2.6.24-rc3-mm2 soft lockup while running tbench

Hi Andrew,

while running tbench on the powerpc with 2.6.24-rc3-mm2 softlock up occurs

BUG: soft lockup - CPU#0 stuck for 11s! [tbench:12183]
NIP: c0000000000ac978 LR: c0000000000acff0 CTR: c00000000005c648
REGS: C00000076F0F3200 TRAP: 0901   Not tainted  (2.6.24-rc3-mm2-autotest)
MSR: 8000000000009032 <EE,ME,IR,DR>  CR: 44000482  XER: 00000000
TASK = C00000076F4BC000[12183] 'tbench' THREAD: C00000076F0F0000 CPU: 0
NIP [c0000000000ac978] .get_page_from_freelist+0x1cc/0x754
LR [c0000000000acff0] .__alloc_pages+0xb0/0x3a8
Call Trace:
[c00000076f0f3480] [c00000076f0f3560] 0xc00000076f0f3560 (unreliable)
[c00000076f0f3590] [c0000000000acff0] .__alloc_pages+0xb0/0x3a8
[c00000076f0f3680] [c0000000000ce2e4] .alloc_pages_current+0xa8/0xc8
[c00000076f0f3710] [c0000000000ac6ec] .__get_free_pages+0x20/0x70
[c00000076f0f3790] [c0000000000d75c8] .__kmalloc_node_track_caller+0x60/0x148
[c00000076f0f3840] [c0000000002c22b0] .__alloc_skb+0x98/0x184
[c00000076f0f38f0] [c000000000306cd8] .tcp_sendmsg+0x1fc/0xe24
[c00000076f0f3a10] [c0000000002b963c] .sock_sendmsg+0xe4/0x128
[c00000076f0f3c10] [c0000000002ba4ec] .sys_sendto+0xd4/0x120
[c00000076f0f3d90] [c0000000002df2f8] .compat_sys_socketcall+0x148/0x214
[c00000076f0f3e30] [c00000000000872c] syscall_exit+0x0/0x40
Instruction dump:
720b0001 eb970000 40820070 72000002 4182000c e8bc0000 48000018 72080004 
4182000c e8bc0008 48000008 e8bc0010 <e8c10078> 7f83e378 7de407b4 7e078378 

-- 
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
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