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.