linux-ext4 - Re: [PATCH] ext4: cleanup in-core orphan list if ext4_truncate() failed to get a transaction handle

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Message-ID: <YMthGuTCuRlZ/zL0@mit.edu>
Date:   Thu, 17 Jun 2021 10:50:02 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Zhang Yi <yi.zhang@...wei.com>
Cc:     linux-ext4@...r.kernel.org, adilger.kernel@...ger.ca, jack@...e.cz,
        yukuai3@...wei.com
Subject: Re: [PATCH] ext4: cleanup in-core orphan list if ext4_truncate()
 failed to get a transaction handle

On Fri, May 07, 2021 at 03:19:04PM +0800, Zhang Yi wrote:
> In ext4_orphan_cleanup(), if ext4_truncate() failed to get a transaction
> handle, it didn't remove the inode from the in-core orphan list, which
> may probably trigger below error dump in ext4_destroy_inode() during the
> final iput() and could lead to memory corruption on the later orphan
> list changes.
> 
>  EXT4-fs (sda): Inode 6291467 (00000000b8247c67): orphan list check failed!
>  00000000b8247c67: 0001f30a 00000004 00000000 00000023  ............#...
>  00000000e24cde71: 00000006 014082a3 00000000 00000000  ......@.........
>  0000000072c6a5ee: 00000000 00000000 00000000 00000000  ................
>  ...
> 
> This patch fix this by cleanup in-core orphan list manually if
> ext4_truncate() return error.
> 
> Signed-off-by: Zhang Yi <yi.zhang@...wei.com>

Applied, thanks.

					- Ted