[Bug 1338] New: 2.6.0-test7 oops in proc_pid_stat
From: Martin J. Bligh (mbligh_at_aracnet.com)
Date: 10/09/03
- Previous message: Mikael Pettersson: "Re: 2.6.0-test7 BLK_DEV_FD dependence on ISA breakage"
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Date: Thu, 09 Oct 2003 13:23:10 -0700 To: linux-kernel <linux-kernel@vger.kernel.org>
http://bugme.osdl.org/show_bug.cgi?id=1338
Summary: 2.6.0-test7 oops in proc_pid_stat
Kernel Version: 2.6.0-test7
Status: NEW
Severity: normal
Owner: bugme-janitors@lists.osdl.org
Submitter: olh@suse.de
Distribution: SuSE SLES8 i386
Hardware Environment: IBM Blade center, 2 xeon cpus, 2.4Ghz, 512MB
Software Environment:gcc3.2.2
Problem Description:
pstree -V
pstree (psmisc) 21.3
Unable to handle kernel NULL pointer dereference at virtual address 0000003c
virtual address is always the same.
oops one, reported to the lkml:
Linux version 2.6.0-test7 (olaf@zert152) (gcc version 3.2.2) #2 SMP Thu Oct 9 08:49:29 CEST 2003
Unable to handle kernel NULL pointer dereference at virtual address 0000003c
printing eip:
c018a322
*pde = 00000000
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<c018a322>] Not tainted
EFLAGS: 00010246
EIP is at proc_pid_stat+0x92/0x510
eax: 00000000 ebx: df2b0d80 ecx: 00000000 edx: c038afcc
esi: 00000000 edi: df2b0d80 ebp: 00000000 esp: ce85de3c
ds: 007b es: 007b ss: 0068
Process pstree (pid: 3518, threadinfo=ce85c000 task=dbb38c80)
Stack: df94b900 c034f440 00000dad df6b5bda 00000053 00000d99 00000419 00000419
0000040d 00000419 00000100 00000086 000000e0 00000106 00000284 00000000
cf6419b4 cf641940 ce136006 c0187ce8 df2b0d80 cf641940 ce85df38 dffd3820
Call Trace:
[<c0187ce8>] pid_revalidate+0x28/0xd0
[<c0170300>] dput+0x30/0x1b0
[<c0140ac3>] buffered_rmqueue+0xc3/0x150
[<c0140c00>] __alloc_pages+0xb0/0x350
[<c0187174>] proc_info_read+0x74/0x160
[<c015904e>] vfs_read+0xbe/0x130
[<c01592f2>] sys_read+0x42/0x70
[<c010b52f>] syscall_call+0x7/0xb
Code: 8b 48 3c 85 c9 74 40 8b 81 98 00 00 00 89 84 24 d4 00 00 00
config is all static. I was reading a CD in the foreground and 2 rpm
builds in the background.
another one after reboot:
Unable to handle kernel NULL pointer dereference at virtual address 0000003c
printing eip:
c018a322
*pde = 00000000
Oops: 0000 [#3]
CPU: 1
EIP: 0060:[<c018a322>] Not tainted
EFLAGS: 00010246
EIP is at proc_pid_stat+0x92/0x510
eax: 00000000 ebx: df8798e0 ecx: 00000000 edx: c038afcc
esi: 00000000 edi: df8798e0 ebp: 00000000 esp: ca841e3c
ds: 007b es: 007b ss: 0068
Process pstree (pid: 2218, threadinfo=ca840000 task=df58d9a0)
Stack: d0301000 c034f440 000008a9 df879bda 0000005a 00000899 00000419 00000419
0000040d 00000419 00000104 0000001e 00000000 00000090 00000000 00000000
00000000 00000000 00000000 00000022 00000009 00000000 00000000 001efdc0
Call Trace:
[<c0140ac3>] buffered_rmqueue+0xc3/0x150
[<c0140c00>] __alloc_pages+0xb0/0x350
[<c0187174>] proc_info_read+0x74/0x160
[<c015904e>] vfs_read+0xbe/0x130
[<c01592f2>] sys_read+0x42/0x70
[<c010b52f>] syscall_call+0x7/0xb
Code: 8b 48 3c 85 c9 74 40 8b 81 98 00 00 00 89 84 24 d4 00 00 00
Anton Blanchard sees the same on ppc64, but I dont have details.
Steps to reproduce:
'it happens' after maybe 6 hours uptime.
system is busy building packages in the background, pstree calls are part of the build process management.
There is a while loop to read from the USB cdrom ( the reason why I did boot 2.6):
screen -S cdtest -- sh -c 'for i in `seq 0 420` `seq 0 420` ; do date; umount -v /media/cdrom ; mount -v /media/cdrom ; find /media/cdrom -type f -print0 | xargs -0 --verbose -n1 cat > /dev/null || break ; done &>log'
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- Previous message: Mikael Pettersson: "Re: 2.6.0-test7 BLK_DEV_FD dependence on ISA breakage"
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