Re: [BUG] NFS(?) bug in 2.6.16-rc5-mm3

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Trond Myklebust wrote on 03/12/06 13:35:

> On Sun, 2006-03-12 at 11:33 -0800, Joe Feise wrote:
>> In certain cases, when programmatically traversing a directory tree mounted
>> through NFS, I get a kernel oops.
>> Two examples are listed below.
> 
> Please could you retry without the cisco_ipsec module (and whatever else
> is tainting the kernel).


Here is the problem without the cisco_ipsec module, with an untainted kernel.

-Joe

BUG: unable to handle kernel paging request at virtual address 02b00025
 printing eip:
c016a8b3
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
last sysfs file: /class/net/eth2/ifindex
Modules linked in: pl2303 usbserial softdog snd_pcm_oss snd_mixer_oss snd_cs46xx
gameport snd_rawmidi snd_seq_de
vice snd_ac97_codec snd_ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc
zoran i2c_algo_bit videodev saa7
111 i2c_core pegasus arc4 ppp_mppe ppp_deflate ppp_generic slhc usblp
CPU:    0
EIP:    0060:[<c016a8b3>]    Not tainted VLI
EFLAGS: 00010206   (2.6.16-rc5-mm3 #9)
EIP is at iput+0x1d/0x65
eax: 02b00011   ebx: d4bb5a00   ecx: d4bb5a18   edx: d4bb5a18
esi: f2183d20   edi: 00000020   ebp: ffffe000   esp: c7c67e3c
ds: 007b   es: 007b   ss: 0068
Process cc1 (pid: 11024, threadinfo=c7c66000 task=f7c8f570)
Stack: <0>f2183d14 c0167e41 c7c66000 c7c66000 000000b6 0004aa24 c17deac0 c0168230
       c013c911 00000000 0001eaf8 00000000 012a8900 00000000 00025c2d 0004aa24
       0000007e 00000000 00000000 000280d2 00000020 c7c67f08 c05a5218 0000000c
Call Trace:
 <c0167e41> prune_dcache+0x12d/0x162   <c0168230> shrink_dcache_memory+0x14/0x37
 <c013c911> shrink_slab+0x131/0x1f7   <c013dab9> try_to_free_pages+0xee/0x1ab
 <c0138ea8> __alloc_pages+0x113/0x29c   <c0141352> do_anonymous_page+0x40/0x148
 <c0141796> __handle_mm_fault+0xa5/0x1d9   <c0467197> notifier_call_chain+0x17/0x2b
 <c0466cb7> do_page_fault+0x16a/0x633   <c0466b4d> do_page_fault+0x0/0x633
 <c010342b> error_code+0x4f/0x54
Code: 85 c9 75 05 e9 4a fd ff ff e9 93 fe ff ff 85 c0 53 89 c3 74 4c 8b 80 90 00
00 00 83 bb 24 01 00 00 20 8b 4
0 20 74 42 85 c0 74 07 <8b> 50 14 85 d2 75 31 8d 43 24 ba 80 84 68 c0 e8 8d a2
11 00 85

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