On Thu, May 23, 2013 at 08:09:33AM +1000, Dave Chinner wrote: > On Wed, May 22, 2013 at 12:19:46PM -0400, Dave Jones wrote: > > On Wed, May 22, 2013 at 10:22:52AM -0400, Dave Jones wrote: > > > On Wed, May 22, 2013 at 03:51:47PM +1000, Dave Chinner wrote: > > > > > > > > Tomorrow I'll also try running some older kernels with the same > > > > > options to see if it's something new, or an older bug. This is a > > > > > new machine, so it may be something that's been around for a > > > > > while, and for whatever reason, my other machines don't hit > > > > > this. > > > > > > > > Another thing that just occurred to me - what compiler are you > > > > using? We had a report last week on #xfs that xfsdump was failing > > > > with bad checksums because of link time optimisation (LTO) in > > > > gcc-4.8.0. When they turned that off, everything worked fine. So if > > > > you are using 4.8.0, perhaps trying a different compiler might be a > > > > good idea, too. > > > > > > Yeah, this is 4.8.0. This box is running F19-beta. > > > I managed to shoehorn the gcc-4.7 from f18 on there though. > > > Bug reproduced instantly, so I think we can rule out compiler. > > > > > > I ran 3.9 with the same debug options. Seems stable. > > > I'll do a bisect. > > > > good news. It wasn't until I started bisecting I realised I was still > > carrying this patch from you to fix slab corruption I was seeing. > > > > It seems to be the culprit (or is masking another problem -- I had to apply > > it at each step of the bisect to get past the slab corruption bug). > > That doesn't make a whole lot of sense to me. The fix in the xfsdev > tree is a little different: > > http://oss.sgi.com/cgi-bin/gitweb.cgi?p=xfs/xfs.git;a=commitdiff;h=52c24ad39ff02d7bd73c92eb0c926fb44984a41d I did an rc2 build with just that commit on top, and can't reproduce this at all now. (At least not with the reproducer that worked previously). > but I can't set how this makes any difference to the problem at all. Mysterious. Dave _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
