[7200] in testers
dodecahedron crash report
daemon@ATHENA.MIT.EDU (Geoffrey Goodell)
Thu Jun 23 06:56:38 2005
Date: Thu, 23 Jun 2005 06:56:32 -0400
To: testers@mit.edu
Cc: dodeca-users@mit.edu
Message-ID: <20050623105632.GK21828@eecs.harvard.edu>
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From: Geoffrey Goodell <goodell@cassandra.eecs.harvard.edu>
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Periodically, dodecahedron.mit.edu, running Linux/Athena 9.4.9, crashes.
The crash is generally not enough to take down the system, but it does
seem to prevent new processes from executing.
The cause appears to be a libafs-related kernel panic:
Unable to handle kernel NULL pointer dereference at virtual address
0000001a
printing eip:
c01bf732
*pde =3D 029ea067
Oops: 0000 [#1]
Modules linked in: md5 ipv6 libafs(U) i2c_dev i2c_core nfs lockd sunrpc
dm_mod uhci_hcd snd_via82xx snd_ac97_codec snd_pcm_oss snd_mixer_oss
snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi
snd_seq_device snd soundcore tulip floppy ext3 jbd
CPU: 0
EIP: 0060:[<c01bf732>] Tainted: PF VLI
EFLAGS: 00010286 (2.6.9-5.EL)=20
EIP is at inode_doinit_with_dentry+0x26/0x63f
eax: 00000000 ebx: db0ec800 ecx: c29f44b8 edx: c29f44b8
esi: c29f44b8 edi: c29f44b8 ebp: e136c680 esp: c26f7e60
ds: 007b es: 007b ss: 0068
Process install-mh (pid: 13455, threadinfo=3Dc26f7000 task=3Dc26b8210)
Stack: 00000000 00000000 00000000 db0ec800 000081a4 db0ec800 c29f44b8
c26f7ea4=20
e136c680 c017ca68 00000000 c29f44b8 e134422b c29f453c d789dc54
db962400=20
db0ec800 00008000 00000090 00000000 00000002 00001000 00000000
000081b6=20
Call Trace:
[<c017ca68>] d_instantiate+0x12e/0x131
[<e134422b>] afs_linux_create+0x1ff/0x2d5 [libafs]
[<c0172887>] vfs_create+0xb8/0xef
[<c0172c58>] open_namei+0x181/0x57e
[<c0161412>] filp_open+0x23/0x3c
[<c03003b2>] __cond_resched+0x14/0x3b
[<c01d8e46>] direct_strncpy_from_user+0x3e/0x5d
[<c01618e9>] sys_open+0x31/0x7d
[<c0301bfb>] syscall_call+0x7/0xb
Code: 5b 5e 5f 5d c3 55 57 89 d7 56 53 83 ec 14 89 44 24 0c 8b 80 ac 01
00 00 c7 44 24 04 00 00 00 00 c7 04 24 00 00 00 00 89 44 24 08 <80> 78
1a 00 0f 85 85 04 00 00 89 c3 31 c9 ba 6b 00 00 00 b8 a4=20
Please let me know if there is anything else I can do to help debug this
problem and prevent dodecahedron.mit.edu from crashing in the future.
Thanks,
Geoff
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