linux-kernel - [PATCH] gfs2: Fix memory leak of object lsi on error return path

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Message-Id: <20210712162430.104913-1-colin.king@canonical.com>
Date:   Mon, 12 Jul 2021 17:24:30 +0100
From:   Colin King <colin.king@...onical.com>
To:     Bob Peterson <rpeterso@...hat.com>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        Abhi Das <adas@...hat.com>, cluster-devel@...hat.com
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] gfs2: Fix memory leak of object lsi on error return path

From: Colin Ian King <colin.king@...onical.com>

In the case where IS_ERR(lsi->si_sc_inode) is true the error exit path
to free_local does not kfree the allocated object lsi leading to a memory
leak. Fix this by kfree'ing lst before taking the error exit path.

Addresses-Coverity: ("Resource leak")
Fixes: 97fd734ba17e ("gfs2: lookup local statfs inodes prior to journal recovery")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 fs/gfs2/ops_fstype.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 5f4504dd0875..bd3b3be1a473 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -677,6 +677,7 @@ static int init_statfs(struct gfs2_sbd *sdp)
 			error = PTR_ERR(lsi->si_sc_inode);
 			fs_err(sdp, "can't find local \"sc\" file#%u: %d\n",
 			       jd->jd_jid, error);
+			kfree(lsi);
 			goto free_local;
 		}
 		lsi->si_jid = jd->jd_jid;
-- 
2.31.1