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SubjectRe: BUG_ON(nd->inode != parent->d_inode);
On 03/08/2013 11:39 PM, Dave Jones wrote:
> On Fri, Mar 08, 2013 at 08:31:48PM -0800, Linus Torvalds wrote:
> > On Fri, Mar 8, 2013 at 7:50 PM, Dave Jones <davej@redhat.com> wrote:
> > > > >
> > > > > I have a feeling there were some sysfs ones that may still be unfixed.
> > >
> > > I was right..
> > >
> > > [ 425.836722] general protection fault: 0000 [#1] PREEMPT SMP
> >
> > You forgot to enable DEBUG_PAGE_ALLOC again, but I don't think it much
> > matters. It's another slab free poison thing.
> >
> > The faulting instruction is
> >
> > mov 0x28(%rbx),%ecx
> >
> > with %rbx having the value 6b6b6b6b6b6b6b6b.
> >
> > > [ 425.847859] RIP: 0010:[<ffffffff8123f657>] [<ffffffff8123f657>] sysfs_find_dirent+0x47/0xf0
> >
> > That seems to be
> >
> > if (hash != sd->s_hash)
> >
> > from sysfs_name_compare() that has been inlined into
> > sysfs_find_dirent(). And where "sd" is the corrupted value. If I read
> > things right.
> >
> > So it looks like the sysfs rbtree is corrupted or something. Adding
> > Greg to the cc.
>
> oh , that rings a bell. ISTR this had something to do with Sasha's idr changes.

I believe the issue you're referring to is my report of a panic in sysfs keys
where the device has gone away? If that is it, I don't think that this issue
is related to that one.

If not, I'm not sure which change you're referring to.


Thanks,
Sasha



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