From: Ted Ts'o <tytso@mit.edu>
To: Tao Ma <tm@tao.ma>
Cc: linux-ext4@vger.kernel.org
Subject: Re: [PATCH] ext4: Avoid memory leak of ext4_groupinfo_caches in ext4_groupinfo_create_slab.
Date: Mon, 11 Jul 2011 18:37:45 -0400 [thread overview]
Message-ID: <20110711223745.GS28763@thunk.org> (raw)
In-Reply-To: <1310398016-8104-1-git-send-email-tm@tao.ma>
On Mon, Jul 11, 2011 at 11:26:55PM +0800, Tao Ma wrote:
> From: Tao Ma <boyu.mt@taobao.com>
>
> In ext4_groupinfo_create_slab, we create ext4_groupinfo_caches within
> ext4_grpinfo_slab_create_mutex, but set it outside the lock, and there
> does exist some case that we may create it twice and causes a memory
> leak. So set it before we call mutex_unlock.
>
> Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Applied, with a slightly reworded one-line summary:
ext4: fix a race which could leak memory in ext4_groupinfo_create_slab()
- Ted
prev parent reply other threads:[~2011-07-11 22:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-11 15:26 [PATCH] ext4: Avoid memory leak of ext4_groupinfo_caches in ext4_groupinfo_create_slab Tao Ma
2011-07-11 15:26 ` [PATCH] ext4: Fix a double free of sbi->s_group_info in ext4_mb_init_backend Tao Ma
2011-07-11 22:44 ` Ted Ts'o
2011-07-11 22:37 ` Ted Ts'o [this message]
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