From: Eric Sandeen <sandeen@redhat.com>
To: linux-btrfs <linux-btrfs@vger.kernel.org>
Cc: Mark Fasheh <mfasheh@suse.de>
Subject: Re: [PATCH] btrfs: fix leak in qgroup_subtree_accounting() error path
Date: Sun, 17 Aug 2014 15:25:51 -0500 [thread overview]
Message-ID: <53F10FCF.7080208@redhat.com> (raw)
In-Reply-To: <53F10BF1.6070602@redhat.com>
On 8/17/14, 3:09 PM, Eric Sandeen wrote:
> Coverity pointed this out; in the newly added
> qgroup_subtree_accounting(), if btrfs_find_all_roots()
> returns an error, we leak at least the parents pointer,
> and possibly the roots pointer, depending on what failure
> occurs.
FWIW, Coverity also doesn't like this line:
unode = ulist_next(roots, &uiter); /* Only want 1 so no need to loop */
it thinks that unode should be checked for NULL, but it seems
like that can't fail, especially since we already checked that
roots->nnodes == 1...
So maybe that should just be marked & ignored.
Or it could be added as a defensive check, I suppose...
-Eric
next prev parent reply other threads:[~2014-08-17 20:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-17 20:09 [PATCH] btrfs: fix leak in qgroup_subtree_accounting() error path Eric Sandeen
2014-08-17 20:25 ` Eric Sandeen [this message]
2014-08-18 21:42 ` Mark Fasheh
2014-08-19 15:27 ` Chris Mason
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