linux-kernel - Re: [PATCH] jffs2: unlock f->sem on error in jffs2_new

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Date:	Wed, 18 Dec 2013 10:39:03 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Wang Nan <wangnan0@...wei.com>
CC:	<linux-kernel@...r.kernel.org>, <hui.geng@...wei.com>,
	Wang Guoli <andy.wangguoli@...wei.com>,
	<stable@...r.kernel.org>
Subject: Re: [PATCH] jffs2: unlock f->sem on error in jffs2_new_inode()

The patch should be sent to jffs2 mainling list, which is
linux-mtd@...ts.infradead.org.

It's not needed to cc stable mailing list. Actually I think it's
better not to.

On 2013/12/18 10:14, Wang Nan wrote:
> From: Wang Guoli <andy.wangguoli@...wei.com>
> 
> If jffs2_new_inode() succeeds, it returns with f->sem held, and
> the caller is responsible for releasing the lock. If it fails,
> it still returns with the lock held, but the caller won't release
> the lock, which will lead to deadlock.
> 
> Fix it by releasing the lock in jffs2_new_inode() on error.
> 
> Cc: <stable@...r.kernel.org> # 2.6.34+
> Signed-off-by: Wang Guoli <andy.wangguoli@...wei.com>

You should also sign the patch.

> ---
>  fs/jffs2/fs.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)

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