Dear Jonathan,
On 10/21/2011 01:26 AM, Jonathan Nieder wrote:
I came across this BUG yesterday on my Asus Eee PC 1000HG. I had probably
done 10-15 suspend/resume cycles that day. I think I had mounted curlftpfs
over a somewhat flaky 3G connection earlier that day, but I didn't access it
at the time of the BUG (though I cannot speak for cron jobs, etc.). Apart
from that, I was only ext3 and the usual system stuff (tmpfs, proc, sysfs,
devpts, binfmt_misc).
[...]
BUG: unable to handle kernel NULL pointer dereference at 00000008
IP: [<c10c90f1>] __mark_inode_dirty+0x15/0x10b
In other words, __mark_inode_dirty was called with (sb->s_op == NULL).
Weird.
Did this ever happen again?
I've found "BUG: unable to handle kernel NULL pointer" 7 times in the 2
years of log files that I keep. It was associated with
__mark_inode_dirty only once, though. Other occurrences have been:
(null) (Debian 2.6.32-27)
strcmp+0x6/0x19 (Debian 2.6.32-27)
__d_lookup+0xb5/0xd3 (Debian 2.6.32-15)
drm_mm_put_block+0x1e/0x123 (Debian 2.6.32-13)
rw_verify_area+0x43/0xac (2.6.31.5)
Cheers,
Thiemo
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