From: Allen Pais <allen.pais@oracle.com>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, kvalo@codeaurora.org,
libertas-dev@lists.infradead.org, linux-wireless@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] libertas: fix a potential NULL pointer dereference
Date: Wed, 18 Sep 2019 22:05:00 +0530 [thread overview]
Message-ID: <1568824500-4243-1-git-send-email-allen.pais@oracle.com> (raw)
alloc_workqueue is not checked for errors and as a result,
a potential NULL dereference could occur.
Signed-off-by: Allen Pais <allen.pais@oracle.com>
---
drivers/net/wireless/marvell/libertas/if_sdio.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/wireless/marvell/libertas/if_sdio.c b/drivers/net/wireless/marvell/libertas/if_sdio.c
index 242d884..30f1025 100644
--- a/drivers/net/wireless/marvell/libertas/if_sdio.c
+++ b/drivers/net/wireless/marvell/libertas/if_sdio.c
@@ -1179,6 +1179,10 @@ static int if_sdio_probe(struct sdio_func *func,
spin_lock_init(&card->lock);
card->workqueue = alloc_workqueue("libertas_sdio", WQ_MEM_RECLAIM, 0);
+ if (unlikely(!card->workqueue)) {
+ ret = -ENOMEM;
+ goto err_queue;
+ }
INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
init_waitqueue_head(&card->pwron_waitq);
@@ -1230,6 +1234,7 @@ static int if_sdio_probe(struct sdio_func *func,
lbs_remove_card(priv);
free:
destroy_workqueue(card->workqueue);
+err_queue:
while (card->packets) {
packet = card->packets;
card->packets = card->packets->next;
--
1.9.1
next reply other threads:[~2019-09-18 16:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-18 16:35 Allen Pais [this message]
2019-10-01 9:22 ` [PATCH] libertas: fix a potential NULL pointer dereference Kalle Valo
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