Re: [Xen-devel] [PATCH] xen/netback: Fix null-pointer access in netback_uevent

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2010-07-29 at 14:44 +0100, Ian Campbell wrote:
> On Thu, 2010-07-29 at 13:42 +0100, Bastian Blank wrote:
> > On Thu, Jul 29, 2010 at 12:47:15PM +0100, Ian Campbell wrote:
> > > On Wed, 2010-07-28 at 17:20 +0100, Bastian Blank wrote:
> > > > 78b55f90e72348e231092dbe3e50ac7414b9e1af still fails:
> > > > | BUG: unable to handle kernel NULL pointer dereference at 
> > > > 0000000000000150
> > > > | IP: [<ffffffff81200764>] netback_uevent+0x8c/0xb9
> > > I tried to reproduce this on squeeze (installed this morning) but
> > > without luck. I'm running on amd64 with the hypervisor and tools from
> > > squeeze and your
> > > linux-image-2.6.32-5-xen-amd64_2.6.32-19~xen.2_amd64.deb test package
> > > (md5 e3bb29be9588fa75b7740c046352b15b).
> > 
> > Its a race condition, so you may or may not see it. It is rather good
> > reproducible on my test machine with 12 cores and a lot of guest
> > creations running at once (32 to be exact in my case).
> 
> Thanks, looks like I need to get much more aggressive then.

A single guest with 16 vifs was sufficient to repro... 

Thanks,
Ian.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel