Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 014/171] libertas: fix a potential NULL pointer dereference | Date | Thu, 2 Jan 2020 23:05:45 +0100 |
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From: Allen Pais <allen.pais@oracle.com>
[ Upstream commit 7da413a18583baaf35dd4a8eb414fa410367d7f2 ]
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> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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 06a57c708992..44da911c9a1a 100644 --- a/drivers/net/wireless/marvell/libertas/if_sdio.c +++ b/drivers/net/wireless/marvell/libertas/if_sdio.c @@ -1229,6 +1229,10 @@ 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); @@ -1282,6 +1286,7 @@ err_activate_card: lbs_remove_card(priv); free: destroy_workqueue(card->workqueue); +err_queue: while (card->packets) { packet = card->packets; card->packets = card->packets->next; -- 2.20.1
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