Re: 2.6.18-rc4+ext4 oops while mounting xfs

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On Fri, Aug 11, 2006 at 01:08:44AM +0200, Michal Piotrowski wrote:
> On 10/08/06, Michal Piotrowski <[email protected]> wrote:
> > ...
> > Aug 10 16:50:53 ltg01-fedora kernel: EFLAGS: 00010002   (2.6.18-rc4 #119)
> > Aug 10 16:50:53 ltg01-fedora kernel: EIP is at __lock_acquire+0x2ca/0x9b6
> > Aug 10 16:50:53 ltg01-fedora kernel: Call Trace:
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c0135ccb>]
> > lock_release_non_nested+0xc5/0x11d
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c0136026>] lock_release+0x12f/0x159
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c02d579e>]
> > __mutex_unlock_slowpath+0x99/0xff
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c02d580c>] mutex_unlock+0x8/0xa
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c016d3b2>]
> > generic_shutdown_super+0xbb/0x113
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c016d42a>] kill_block_super+0x20/0x32
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c016d4ea>] deactivate_super+0x5d/0x6f
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c0180336>] mntput_no_expire+0x42/0x72
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c0173147>]
> > path_release_on_umount+0x15/0x18
> > Aug 10 16:50:53 ltg01-fedora kernel:  [<c018147c>] sys_umount+0x1e7/0x21b
> ...
> It's fixed in latest 2.6.18-rc4-git*.

We've not changed anything mount related in current git* kernels,
are you sure its fixed (did it happen every time)?  I'm not sure
how its XFS related too ... looks possibly lockdep related (from
*non_nested back there?) and perhaps an issue with sb->s_lock in
the kill_block_super unlock_super call?

cheers.

-- 
Nathan
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