Re: fault in __d_lookup [Was: 2.6.25-mm1]

[Jiri Slaby]

On 04/21/2008 11:45 AM, Al Viro wrote:
> On Mon, Apr 21, 2008 at 11:37:40AM +0200, Jiri Slaby wrote:
> > On 04/21/2008 11:06 AM, Al Viro wrote:
> > > On Mon, Apr 21, 2008 at 10:31:40AM +0200, Jiri Slaby wrote:
> > >
> > >        hlist_for_each_entry_rcu(dentry, node, head, d_hash) {
> > >                struct qstr *qstr;
> > >
> > >                if (dentry->d_name.hash != hash)
> > >                        continue;
> > >
> > > walking into node == (struct hlist_node *)0x00f0000000000000...
> > Yup, true, In the last oops I stuck on memcmp few lines below.
> >
> > BTW. it's 100% reproducible after it happens once, but fixable by reboot. 
> > Any tests I should run (memtest, some printks sticked anywhere)?
>
> Well, if list has such turd in it, you'll certainly hit it every time
> you walk that list, so 100% reproducible is not surprising.
>
> How well is it reproducible from fresh boot?

Few days with suspend/resume cycles. This one was booted 12 hours ago, one 
suspend/resume. Will keep an eye on it and keep you informed.
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