Ubuntu
linux-source-2.6.22 package

kernel bug oops on shutdown nfs dentry

Bug #189363 reported by Mark Carey
4
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Fix Released
Undecided
Unassigned
linux-source-2.6.22 (Ubuntu)
Won't Fix
Undecided
Unassigned

Bug Description

Binary package hint: linux-image-2.6.22-14-generic

Running Gutsy on Intel Core 2 Duo E6300, on shutdown got an opps/bug with nfs mounted /home (will attach photos of the opps). /home is an xfs partition in an md0 RAID1 array on a remote machine.

Basic text looks something like, I have abridged lots of the register detail;

BUG: Dentry f4088880{i=123677f1,n=ita0kri7.default} still in use (1) [umount of nfs 0:18]
kernel BUG at /build/buildd/linux-source-2.6.22-2.6.22/fs/dcache.c:652!
invalid opcode: 0000 [#1]
SMP
Modules nvidia(P)
CPU 1
...
EFLAGS: 00010296 (2.6.22-14-generic #1)
EIP is at shrink_dcache_for_umount_subtree+0x21f/0x230
...
Process umount.nfs (pid: 9346, ti=f60fa000 task=f6244000 task.t f60fa000
...
Call Trace:

Bug has only happened once. There was a kernel update which happened last night so I am no longer running the kernel on which this happened. I can find no other bugs like this one.

Revision history for this message
Mark Carey (careym) wrote :

Photo 1 of complete oops

Revision history for this message
Mark Carey (careym) wrote :

Photo 2 of complete oops

Revision history for this message
Mark Carey (careym) wrote :

Photo 3 of complete oops

Revision history for this message
Mark Carey (careym) wrote :

Starting at the text of this bugreport I realise that "ita0kri7.default" is the name of the logged in users firefox profile directory. Pperhaps firefox was left running at shutdown - not sure if this helps ....

careys@hereford:~$ ls -lah /home/careys/.mozilla/firefox/
total 12K
drwxrw---- 3 careys careys 68 2008-01-21 19:14 .
drwxrw---- 4 careys careys 34 2008-01-21 19:14 ..
drwxrw---- 6 careys careys 4.0K 2008-02-06 09:11 ita0kri7.default
-rw-r----- 1 careys careys 2.1K 2008-02-06 08:45 pluginreg.dat
-rw-r--r-- 1 careys careys 94 2008-01-21 19:14 profiles.ini
careys@hereford:~$

Revision history for this message
Leann Ogasawara (leannogasawara) wrote :

Hi Mark,

The Hardy Heron Alpha series is currently under development and contains an updated version of the kernel. It would be helpful if you could test the latest Hardy Alpha release: http://www.ubuntu.com/testing . You should be able to then test the new kernel via the LiveCD. If you can, please verify if this bug still exists or not and report back your results. We'll keep this report open against the actively developed kernel bug against 2.6.22 this will be closed. Thanks.

Changed in linux:
status: New → Incomplete
Changed in linux-source-2.6.22:
status: New → Incomplete
Revision history for this message
Mark Carey (careym) wrote :

Does not appear to occur in Hardy Heron Server

Revision history for this message
Leann Ogasawara (leannogasawara) wrote :

Hi Mark,

Thanks for the update. Marking this "Fix Released" against Hardy. Thanks.

Changed in linux:
status: Incomplete → Fix Released
Changed in linux-source-2.6.22:
status: Incomplete → Won't Fix
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