Kernel Bug Tracker – Bug 14074
Oops on disk access after suspend/resume
Last modified: 2009-09-10 02:12:22 UTC
Created attachment 22882 [details]
dmesg output before the suspend
For a while now I have had crashes on newer kernels that I was unable to track the cause of. I've finally managed to nail down a test case for it now though. It seems that there is a problem with some disk accesses after a suspend/resume, it doesn't happen on the first access but some time later which is what made it hard for me to identify.
The following will always cause the error to show up though:
1) Boot and login as root
2) Suspend using pm-suspend
3) Resume with power button
4) Run "find / -xdev -type f | xargs -t -l1 cat > /dev/null"
At some point during that find command the kernel will Oops.
The last kernel that definitely worked was v2.6.27. I've done a git bisect and I believe the problem commit to be e621bd18958ef5dbace3129ebe17a0a475e127d9 and indeed reverting that commit on a v2.6.28 codebase does fix my problem.
I've been unable to generate a working patch for v2.6.31, and even if I could I don't think just reverting the commit is the correct solution as the commit was a bug fix itself.
Relevant logs attached.
Created attachment 22883 [details]
Oops captured from a netconsole
Created attachment 22884 [details]
Created attachment 22885 [details]
Created attachment 22886 [details]
Output of ver_linux script
I believe this is the same bug as #13149.
*** This bug has been marked as a duplicate of bug 13149 ***