Messages in this thread | | | Date | Wed, 2 Dec 2015 12:36:09 -0500 | From | Dave Jones <> | Subject | Re: 4.4rc3 nfsd/btrfs kasan warning. |
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On Wed, Dec 02, 2015 at 12:14:56PM -0500, Chris Mason wrote: > On Wed, Dec 02, 2015 at 11:09:43AM -0500, Dave Jones wrote: > > On Wed, Dec 02, 2015 at 10:11:28AM -0500, Josef Bacik wrote: > > > On 12/02/2015 09:59 AM, Dave Jones wrote: > > > > Got a few of these in the logs this morning after an overnight rsync over nfs > > > > to an exported btrfs volume. > > > > > > That's probably us and not NFS, what line is that in > > > setup_cluster_bitmap? Thanks, > > > > If my math is correct, it's this.. > > > > if (entry->offset != bitmap_offset) > > > > I don't seem to be able to trigger it on demand unfortunatly. > > Is it possible we're blowing the stack? It seems pretty tricky to get a > stack out of bounds out of this code without flat out blowing through > it.
Hm, there is a lot of debug crap on the stack from lockdep etc, though I didn't get any warnings from the other stack overflow checks.
Dave
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