From: "Martin J. Bligh" <mbligh@aracnet.com>
To: linux-kernel <linux-kernel@vger.kernel.org>
Subject: [Bug 863] New: cat /proc/buddyinfo + netstat -a kills machine
Date: Wed, 02 Jul 2003 09:27:42 -0700 [thread overview]
Message-ID: <25670000.1057163262@[10.10.2.4]> (raw)
Summary: cat /proc/buddyinfo + netstat -a kills machine
Kernel Version: 2.5.73-bk10
Status: NEW
Severity: blocking
Owner: akpm@digeo.com
Submitter: slpratt@us.ibm.com
Distribution:SLES
Hardware Environment:8way 900Mhz PIII
Problem Description:
on 2.5.73-bk10 as well as 2.5.73-mm3, issuing netsta -a followed by cat
/proc/buddy infor causes segfaults and locks up the system.
Repeated issuing of netstat -a prodices the following trap:
Unable to handle kernel paging request at virtual address 00c1a000
printing eip:
c01405ed
*pde = 00000000
Oops: 0000 [#1]
CPU: 1
EIP: 0060:[<c01405ed>] Not tainted
EFLAGS: 00010086
EIP is at kfree+0x3d/0x70
eax: 00000001 ebx: 00c1a000 ecx: f65b85c0 edx: c19f6009
esi: 00000100 edi: 00000206 ebp: f57c9720 esp: f5b13f4c
ds: 007b es: 007b ss: 0068
Process netstat (pid: 2545, threadinfo=f5b12000 task=f58bb960)
Stack: f68fd438 00000000 f68fd420 f65b85c0 f6caead0 c0173fd5 00000100 f65b85c0
f65b85c0 f7fdeb60 f6caead0 c0156c21 f6caead0 f65b85c0 f65b85c0 0805f038
f6aaf440 00000000 c01552a9 f65b85c0 f6aaf440 f65b85c0 0805f038 0805f038
Call Trace:
[<c0173fd5>] seq_release_private+0x25/0x48
[<c0156c21>] __fput+0xb1/0xc0
[<c01552a9>] filp_close+0x99/0xd0
[<c015533e>] sys_close+0x5e/0x80
[<c010afdf>] syscall_call+0x7/0xb
Cating of /proc/buddy info produces:
<1>Unable to handle kernel paging request at virtual address 08c19ec0
printing eip:
c013d5e0
*pde = 00000000
Oops: 0000 [#2]
CPU: 0
EIP: 0060:[<c013d5e0>] Not tainted
EFLAGS: 00010006
EIP is at frag_show+0xd0/0x140
eax: 08c19ec0 ebx: c047e3f8 ecx: 08c19ec0 edx: c19f6009
esi: 000006b7 edi: c047e1f8 ebp: c047e3f8 esp: f60b7f0c
ds: 007b es: 007b ss: 0068
Process cat (pid: 5355, threadinfo=f60b6000 task=f52aa0c0)
Stack: f68fd520 c041caa6 00000000 c041ca07 00000078 00000000 00000206 c047e180
c047c980 f68fd520 c047c980 00000000 c01737a2 f68fd520 c047c980 00002000
f68fd538 00000000 c014a082 f6ba1dc0 00000000 00000000 00000000 c66d5a20
Call Trace:
[<c01737a2>] seq_read+0x102/0x300
[<c014a082>] do_brk+0x142/0x220
[<c0155b4e>] vfs_read+0xbe/0x130
[<c0155df2>] sys_read+0x42/0x70
[<c010afdf>] syscall_call+0x7/0xb
Code: 8b 01 89 ca 46 89 c1 0f 18 00 90 39 da 75 f1 c7 44 24 04 a6
/autobench/scripts/getsysinfo: line 133: 5355 Segmentation fault cat
/proc/buddyinfo >
$2/proc/buddyinfo.$1$RUN_SUFFIX
Steps to reproduce:
run netstat -a a few times until it traps. then cat /proc/buddyinfo and hte
system will be locked up.
next reply other threads:[~2003-07-02 16:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-02 16:27 Martin J. Bligh [this message]
2003-07-02 16:39 ` [Bug 863] New: cat /proc/buddyinfo + netstat -a kills machine Dave Hansen
2003-07-02 17:02 ` Martin J. Bligh
2003-07-03 6:44 ` [PATCH] NET: fix SEGV/OOPS with /proc/net/{raw,igmp,...} (is Re: [Bug 863] New: cat /proc/buddyinfo + netstat -a kills machine) YOSHIFUJI Hideaki / 吉藤英明
2003-07-03 10:13 ` James Morris
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