Bug 71781

Summary: Kernel panic - not syncing: Fatal exception in interrupt
Product: Networking Reporter: Antonio (asilva)
Component: IPV4Assignee: Stephen Hemminger (stephen)
Status: RESOLVED INVALID    
Severity: blocking CC: eric.dumazet
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 3.10.32 Subsystem:
Regression: No Bisected commit-id:
Attachments: full boot sequence log

Description Antonio 2014-03-10 12:51:36 UTC
Created attachment 128811 [details]
full boot sequence log

The servers just panic on boot time:

[   18.647435] BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
[   18.656468] IP: [<ffffffff810f4c8d>] ____cache_alloc+0x1f/0x290
[   18.663269] PGD 0 
[   18.665581] Oops: 0000 [#1] SMP 

.... (see attach log for the full message)

[   19.200202] ---[ end trace 85fce9ca9a98a944 ]---
[   19.207209] Kernel panic - not syncing: Fatal exception in interrupt
[   19.216142] Rebooting in 1 seconds..
Comment 1 Eric Dumazet 2014-03-11 05:31:50 UTC
Yes, and the interesting part in the clipped message is :

[   16.431685]  Hooking IMQ after NAT on PREROUTING.
[   16.436985]  Hooking IMQ before NAT on POSTROUTING.

Sorry, we do not support IMQ in upstream kernel.
Comment 2 Stephen Hemminger 2014-03-11 05:46:46 UTC
Reproduce problem without known buggy out of tree module (IMQ).
IMQ was rejected upstream because it was racy.
Comment 3 Antonio 2014-03-11 08:10:36 UTC
Thanks,

I didn't notice the IMQ messages, removing IMQ from loading on boot the kernel starts ok.


Thanks,