Bug 14378

Summary: Problems with net/core/skbuff.c
Product: Networking Reporter: Rafael J. Wysocki (rjw)
Component: OtherAssignee: Arnaldo Carvalho de Melo (acme)
Status: CLOSED CODE_FIX    
Severity: normal CC: markmc
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.31.2 Tree: Mainline
Regression: Yes
Bug Depends on:    
Bug Blocks: 14230    
Attachments: another similar oops
another trace

Description Rafael J. Wysocki 2009-10-11 20:50:59 UTC
Subject    : 2.6.31.2 problems with net/core/skbuff.c
Submitter  : Massimo Cetra <mcetra@navynet.it>
Date       : 2009-10-08 14:51
References : http://marc.info/?l=linux-kernel&m=125501488220358&w=4

This entry is being used for tracking a regression from 2.6.31.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 ctrix 2009-10-13 09:15:52 UTC
Created attachment 23382 [details]
another similar oops

Actually i found another oops which is very similar to the previous one.
Here, vserver is not involved, and the problem starts at drbd which lives in kernel space (the other oops started at ocfs2).

Both ocfs2 and drbd make heavy use of network I/O so i guess the problem is something in the network layer.

Anything i can do to help to debugging and solving this issue ?
Comment 2 ctrix 2009-10-13 09:32:59 UTC
Created attachment 23383 [details]
another trace

Here it is another trace, triggered by postfix while doing heavy I/O on another server.
This time drbd and ocfs2 are not involved.
Comment 3 Mark McLoughlin 2009-10-13 11:15:18 UTC
Patch for this posted by Eric:

  http://marc.info/?l=linux-netdev&m=125542939211671
Comment 4 Rafael J. Wysocki 2009-10-26 20:55:45 UTC
On Monday 26 October 2009, Eric Dumazet wrote:
> Rafael J. Wysocki a écrit :
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.31.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry   : http://bugzilla.kernel.org/show_bug.cgi?id=14378
> > Subject             : Problems with net/core/skbuff.c
> > Submitter   : Massimo Cetra <mcetra@navynet.it>
> > Date                : 2009-10-08 14:51 (19 days old)
> > References  : http://marc.info/?l=linux-kernel&m=125501488220358&w=4
> > 
> > 
> 
> This was corrected by commit ed79bab847d8e5a2986d8ff43c49c6fb8ee3265f
> 
> virtio_net: use dev_kfree_skb_any() in free_old_xmit_skbs()