linux-kernel - Re: 2.6.24-rc8-mm1: sparc64 warning at fs/file_table.c:49 _

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Message-Id: <20080122130228.e7596163.akpm@linux-foundation.org>
Date:	Tue, 22 Jan 2008 13:02:28 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Mariusz Kozlowski <m.kozlowski@...land.pl>
Cc:	linux-kernel@...r.kernel.org, davem@...emloft.net,
	sparclinux@...r.kernel.org, Dave Hansen <haveblue@...ibm.com>,
	Christoph Hellwig <hch@....de>
Subject: Re: 2.6.24-rc8-mm1: sparc64 warning at fs/file_table.c:49
 __fput+0x1a8/0x1e0()

> On Tue, 22 Jan 2008 21:30:23 +0100 Mariusz Kozlowski <m.kozlowski@...land.pl> wrote:
> Hello,
> 
> Issuing "sysrq-s sysrq-u" sequence causes these warnings on sparc64:
> 
> ------------[ cut here ]------------
> WARNING: at fs/file_table.c:49 __fput+0x1a8/0x1e0()
> Modules linked in: sg sr_mod cdrom
> Call Trace:
>  [00000000004c9ac8] __fput+0x1b0/0x1e0
>  [00000000004c6978] filp_close+0x60/0x80
>  [00000000004c6a18] sys_close+0x80/0xe0
>  [00000000004062d4] linux_sparc_syscall32+0x3c/0x40
>  [0000000000012f1c] 0x12f24
> ---[ end trace 6dbe14ff8ec57744 ]---
> ------------[ cut here ]------------
> WARNING: at fs/file_table.c:49 __fput+0x1a8/0x1e0()
> Modules linked in: sg sr_mod cdrom
> Call Trace:
>  [00000000004c9ac8] __fput+0x1b0/0x1e0
>  [00000000004c6978] filp_close+0x60/0x80
>  [00000000004c6a18] sys_close+0x80/0xe0
>  [00000000004062d4] linux_sparc_syscall32+0x3c/0x40
>  [0000000000012f1c] 0x12f24
> ---[ end trace 6dbe14ff8ec57744 ]---
> ------------[ cut here ]------------
> WARNING: at fs/file_table.c:49 __fput+0x1a8/0x1e0()
> Modules linked in: sg sr_mod cdrom
> Call Trace:
>  [00000000004c9ac8] __fput+0x1b0/0x1e0
>  [00000000004c6978] filp_close+0x60/0x80
>  [00000000004c6a18] sys_close+0x80/0xe0
>  [00000000004062d4] linux_sparc_syscall32+0x3c/0x40
>  [0000000000012f1c] 0x12f24
> ---[ end trace 6dbe14ff8ec57744 ]---
> ------------[ cut here ]------------
> WARNING: at fs/file_table.c:49 __fput+0x1a8/0x1e0()
> Modules linked in: sg sr_mod cdrom
> Call Trace:
>  [00000000004c9ac8] __fput+0x1b0/0x1e0
>  [00000000004c6978] filp_close+0x60/0x80
>  [00000000004c6a18] sys_close+0x80/0xe0
>  [00000000004062d4] linux_sparc_syscall32+0x3c/0x40
>  [0000000000012f1c] 0x12f24
> ---[ end trace 6dbe14ff8ec57744 ]---
> 

That's

        WARN_ON(f->f_mnt_write_state == FILE_MNT_WRITE_TAKEN);

cc's added...
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