linux-kernel - Re: [PATCH v2 08/11] ext4: lost brelse in ext4_orphan

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Message-ID: <20181106220433.GG2570@thunk.org>
Date:   Tue, 6 Nov 2018 17:04:33 -0500
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Vasily Averin <vvs@...tuozzo.com>
Cc:     linux-ext4@...r.kernel.org,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-kernel@...r.kernel.org, Dmitry Monakhov <dmonakhov@...il.com>
Subject: Re: [PATCH v2 08/11] ext4: lost brelse in ext4_orphan_add()

On Wed, Oct 31, 2018 at 12:58:31AM +0300, Vasily Averin wrote:
> iloc.bh os taken in ext4_reserve_inode_write().
> If (dirty == true) it is released in ext4_mark_iloc_dirty(),
> however it is not released in (dirty == false) case.
> 
> Fixes d745a8c20c1f ("ext4: reduce contention on s_orphan_lock")
> however iloc.bh count balance was broken earlier by
> Fixes 6e3617e579e0 ("ext4: Handle non empty on-disk orphan link") #2.6.34
> 
> cc: Dmitry Monakhov <dmonakhov@...il.com>
> Signed-off-by: Vasily Averin <vvs@...tuozzo.com>

Thanks, applied.  I fixed up the commit description and Fixes/Cc
trailers.  I used the one-line description:

    ext4: avoid buffer leak in ext4_orphan_add() after prior errors

  	       	       			       - Ted