From: Zhipeng Lu <alexious@zju.edu.cn>
Date: Fri, 26 Jan 2024 07:53:34 +0000 (+0800)
Subject: wifi: libertas: fix some memleaks in lbs_allocate_cmd_buffer()
X-Git-Tag: v5.10.214~176
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f0dd27314c7afe34794c2aa19dd6f2d30eb23bc7;p=thirdparty%2Fkernel%2Fstable.git

wifi: libertas: fix some memleaks in lbs_allocate_cmd_buffer()

[ Upstream commit 5f0e4aede01cb01fa633171f0533affd25328c3a ]

In the for statement of lbs_allocate_cmd_buffer(), if the allocation of
cmdarray[i].cmdbuf fails, both cmdarray and cmdarray[i].cmdbuf needs to
be freed. Otherwise, there will be memleaks in lbs_allocate_cmd_buffer().

Fixes: 876c9d3aeb98 ("[PATCH] Marvell Libertas 8388 802.11b/g USB driver")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240126075336.2825608-1-alexious@zju.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/net/wireless/marvell/libertas/cmd.c b/drivers/net/wireless/marvell/libertas/cmd.c
index a4d9dd73b2588..db9a852fa58a3 100644
--- a/drivers/net/wireless/marvell/libertas/cmd.c
+++ b/drivers/net/wireless/marvell/libertas/cmd.c
@@ -1133,7 +1133,7 @@ int lbs_allocate_cmd_buffer(struct lbs_private *priv)
 		if (!cmdarray[i].cmdbuf) {
 			lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
 			ret = -1;
-			goto done;
+			goto free_cmd_array;
 		}
 	}
 
@@ -1141,8 +1141,17 @@ int lbs_allocate_cmd_buffer(struct lbs_private *priv)
 		init_waitqueue_head(&cmdarray[i].cmdwait_q);
 		lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
 	}
-	ret = 0;
+	return 0;
 
+free_cmd_array:
+	for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
+		if (cmdarray[i].cmdbuf) {
+			kfree(cmdarray[i].cmdbuf);
+			cmdarray[i].cmdbuf = NULL;
+		}
+	}
+	kfree(priv->cmd_array);
+	priv->cmd_array = NULL;
 done:
 	return ret;
 }