From: Dave Jones <davej@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: BUG_ON(nd->inode != parent->d_inode);
Date: Fri, 8 Mar 2013 18:30:41 -0500 [thread overview]
Message-ID: <20130308233041.GA32587@redhat.com> (raw)
In-Reply-To: <CA+55aFxKgZyqbn1M0sAL0CoLxmKSzAALYBTPLYVM7OpG_M_B=A@mail.gmail.com>
On Fri, Mar 08, 2013 at 03:20:40PM -0800, Linus Torvalds wrote:
> On Fri, Mar 8, 2013 at 3:07 PM, Dave Jones <davej@redhat.com> wrote:
> >
> > Ok, got something more meaningful out of the lookup_slow trace.
> >
> > [ 66.082984] parent->dname.name (06b6b6b6b6b6b6b)
> > [ 66.083637] parent =
> >
> > At first I thought AH-HA! SLAB POISON!
> > But look closer.. it's shifted by 8 bits.
>
> Or just the high byte has been cleared.
Duh, yes. I wasn't zero padding, so that's 006b6b6b.
Here's another run, with something similar in path->dentry..
[ 100.729395] parent->dname.name (06 b6 b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b)
[ 100.729397] path->dentry: 6d6e740 6b6b6b6b
[ 100.729401] nd->last.name = (\xffffffd2.W._.N.".\xfffffffe.\xffffff80.^N.?.\xffffffe4.E.8.g.\xffffffd2.N.\xffffffb6.^G.\xfffffff1.\xffffffcc.U.\xffffffda.^_.h.^M.1.\xffffffc5.\xffffff82.%.B.\xffffffe0.\xffffffad.^U.8.^L.c.Z.^K.\xffffffe4.h.J.\xffffffc8.\xffffffad.\xffffff83./.\xffffff80.\xffffffd1.\xffffffe5.\xffffff87.\xffffffc3.\xffffffb2.\xffffffdc.\xffffff9d.\xffffffd1.E.\xffffffab.^B.
(garbage continues..)
next prev parent reply other threads:[~2013-03-08 23:30 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-07 2:16 BUG_ON(nd->inode != parent->d_inode); Dave Jones
2013-03-07 15:30 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 17:30 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-07 19:35 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 20:33 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-07 21:38 ` ipc/testmsg GPF Dave Jones
2013-03-07 21:45 ` Linus Torvalds
2013-03-07 21:49 ` David Miller
2013-03-07 21:51 ` Linus Torvalds
2013-03-07 22:03 ` Dave Jones
2013-03-07 22:36 ` pipe_release oops Dave Jones
2013-03-07 23:14 ` fasync_remove_entry oops Dave Jones
2013-03-07 23:46 ` Linus Torvalds
2013-03-07 23:54 ` Dave Jones
2013-03-08 0:20 ` Dave Jones
2013-03-08 0:21 ` pipe_release oops Linus Torvalds
2013-03-08 14:53 ` Dave Jones
2013-03-08 18:30 ` Linus Torvalds
2013-03-08 18:26 ` Jörn Engel
2013-03-10 23:33 ` Al Viro
2013-03-12 19:09 ` Jörn Engel
2013-03-10 22:10 ` Al Viro
2013-03-11 0:35 ` Al Viro
2013-03-11 15:10 ` Linus Torvalds
2013-03-11 18:05 ` Al Viro
2013-03-12 13:06 ` Al Viro
2013-03-12 15:31 ` Linus Torvalds
2013-03-12 19:43 ` Al Viro
2013-03-12 19:56 ` Dave Jones
2013-03-12 20:09 ` Linus Torvalds
2013-03-12 20:51 ` Al Viro
2013-03-27 13:51 ` Yet another pipe related oops Dave Jones
2013-03-27 15:20 ` Al Viro
2013-03-27 16:33 ` Linus Torvalds
2013-03-27 16:53 ` Raymond Jennings
2013-03-27 17:45 ` Al Viro
2013-04-01 20:34 ` Al Viro
2013-04-01 21:00 ` Greg Kroah-Hartman
2013-04-01 21:21 ` Al Viro
2013-04-01 21:44 ` Greg Kroah-Hartman
2013-04-01 23:27 ` Al Viro
2013-04-02 0:22 ` Al Viro
2013-04-02 1:55 ` Greg Kroah-Hartman
2013-03-12 1:27 ` pipe_release oops Dave Jones
2013-03-09 0:27 ` ipc/testmsg GPF Peter Hurley
2013-03-09 0:32 ` Dave Jones
2013-03-11 18:26 ` Dave Jones
2013-03-11 19:03 ` Peter Hurley
2013-03-12 22:02 ` Andrew Morton
2013-03-12 22:33 ` Dave Jones
2013-03-15 21:21 ` Dave Jones
2013-03-25 16:37 ` Dave Jones
2013-03-25 18:28 ` Peter Hurley
2013-03-25 18:39 ` Dave Jones
2013-03-07 22:18 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 22:50 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-07 23:03 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 23:55 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-11 0:02 ` BUG_ON(nd->inode->i_op->follow_link); Al Viro
2013-03-10 23:04 ` BUG_ON(nd->inode->i_op->follow_link); Al Viro
2013-03-12 18:31 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-08 15:04 ` BUG_ON(nd->inode != parent->d_inode); Dave Jones
2013-03-08 18:51 ` Linus Torvalds
2013-03-08 19:18 ` Dave Jones
2013-03-08 19:20 ` Dave Jones
2013-03-08 19:36 ` Dave Jones
2013-03-08 19:47 ` Linus Torvalds
2013-03-08 21:04 ` Dave Jones
2013-03-08 22:41 ` Linus Torvalds
2013-03-08 23:07 ` Dave Jones
2013-03-08 23:14 ` Dave Jones
2013-03-08 23:20 ` Linus Torvalds
2013-03-08 23:28 ` Linus Torvalds
2013-03-08 23:34 ` Dave Jones
2013-03-08 23:47 ` Dave Jones
2013-03-08 23:51 ` Linus Torvalds
2013-03-08 23:30 ` Dave Jones [this message]
2013-03-08 23:45 ` Linus Torvalds
2013-03-08 23:55 ` Dave Jones
2013-03-09 0:02 ` Linus Torvalds
2013-03-09 0:19 ` Dave Jones
2013-03-09 0:29 ` Raymond Jennings
2013-03-09 0:36 ` Dave Jones
2013-03-09 1:18 ` Linus Torvalds
2013-03-09 2:03 ` Dave Jones
2013-03-09 2:08 ` Linus Torvalds
2013-03-09 2:26 ` Dave Jones
2013-03-09 2:56 ` Dave Jones
2013-03-09 2:57 ` Dave Jones
[not found] ` <CA+55aFxyOYXnzDoWr7Utr1QLjjMUCON5EGH3FMvGBHxnxMJmQQ@mail.gmail.com>
2013-03-09 3:25 ` Dave Jones
2013-03-09 3:38 ` Eric W. Biederman
2013-03-09 4:26 ` Dave Jones
2013-03-09 8:28 ` Eric W. Biederman
[not found] ` <CA+55aFweyfew3VU79ZQV4otJcWiF0=xKXxDtADXcccNxGaqMwA@mail.gmail.com>
2013-03-09 3:50 ` Dave Jones
2013-03-09 4:31 ` Linus Torvalds
2013-03-09 4:39 ` Dave Jones
2013-03-09 5:13 ` Sasha Levin
2013-03-09 5:16 ` Dave Jones
2013-03-09 3:27 ` Eric W. Biederman
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