Created attachment 21084 [details]
kernel panic message
Not syncing while reboot/halt. See attached screenshot.
Created attachment 21085 [details]
I'll assume that 2.6.29 didn't have this bug.
Yes. 18.104.22.168 is fine. I also set above regression flag to yes to indicate this situation.
Created attachment 21093 [details]
netfilter: nf_conntrack: fix crash when unloading helpers
This should fix the crash. Its on its way upstream and should hit Linus' tree in the next networking merge.
Attached patch fixes the kernel panic. Thanks.
Fixed by commit 38fb0afcd8761f8858e27135ed89a65117e2019c .