linux-kernel - Re: 2.6.30-rc5 reiserfs bug

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Date:	Sat, 16 May 2009 03:47:12 +0200
From:	Johannes Weiner <hannes@...xchg.org>
To:	David Ellingsworth <david@...ntd.dyndns.org>
Cc:	reiserfs-devel@...er.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.30-rc5 reiserfs bug

On Fri, May 15, 2009 at 09:14:35PM -0400, David Ellingsworth wrote:
> I just built a kernel based off of the latest wireless-testing branch
> and encountered this warning upon boot.
> 
> Regards,
> 
> David Ellingsworth
> 
> -------------------------------------------------------------------------------------
> 
> WARNING: at fs/namei.c:1251 warn_slowpath_null+0x10/0x15()
> Hardware name: Presario 2100 (PF181UA)
> Modules linked in: reiserfs ide_cd_mod ide_gd_mod cdrom
> ide_pci_generic ohci_hcd alim15x3 ide_core natsemi usbcore thermal fan
> Pid: 731, comm: exe Not tainted 2.6.30-rc5-wl #4
> Call Trace:
>  [<c0116690>] warn_slowpath_fmt+0x72/0xa1
>  [<c0119da2>] ? __do_softirq+0xba/0xc2
>  [<c0119e94>] ? irq_exit+0x28/0x2a
>  [<c0103d00>] ? do_IRQ+0x5b/0x70
>  [<c0102e29>] ? common_interrupt+0x29/0x30
>  [<c0116f87>] ? vprintk+0x1fe/0x208
>  [<dcd0b037>] ? prepare_error_buf+0x3e4/0x41e [reiserfs]
>  [<c01166cf>] warn_slowpath_null+0x10/0x15
>  [<c015cace>] lookup_one_len+0x30/0x9a
>  [<dcd18596>] reiserfs_xattr_init+0x61/0x1af [reiserfs]
>  [<dcd0a0f7>] reiserfs_fill_super+0xa8a/0xb98 [reiserfs]
>  [<c0165fd1>] ? mntput_no_expire+0x19/0x97
>  [<c01ad31c>] ? string+0x34/0x82
>  [<c01addb3>] ? vsnprintf+0x65f/0x6a2
>  [<c01ade5c>] ? snprintf+0x15/0x17
>  [<c01851b1>] ? disk_name+0x5a/0x67
>  [<c0157923>] get_sb_bdev+0xf2/0x138
>  [<dcd08351>] get_super_block+0x13/0x15 [reiserfs]
>  [<dcd0966d>] ? reiserfs_fill_super+0x0/0xb98 [reiserfs]
>  [<c0156c42>] vfs_kern_mount+0x3c/0x77
>  [<c0156cc1>] do_kern_mount+0x32/0xb9
>  [<c0167410>] do_mount+0x5b5/0x5f3
>  [<c0275e15>] ? iret_exc+0x4f9/0x9ab
>  [<c01674af>] sys_mount+0x61/0x9a
>  [<c0102875>] syscall_call+0x7/0xb

This should be fixed upstream by

  5a6059c reiserfs: Expand i_mutex to enclose lookup_one_len

which the wireless-testing tree does not have yet.
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