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Date: Wed, 18 Sep 2019 22:03:15 +0530 From: Allen Pais <allen.pais@...cle.com> To: netdev@...r.kernel.org Cc: davem@...emloft.net, linux-kernel@...r.kernel.org Subject: [PATCH] drivers/net/fjes: fix a potential NULL pointer dereference alloc_workqueue is not checked for errors and as a result, a potential NULL dereference could occur. Signed-off-by: Allen Pais <allen.pais@...cle.com> --- drivers/net/fjes/fjes_main.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c index bbbc1dc..2d04104 100644 --- a/drivers/net/fjes/fjes_main.c +++ b/drivers/net/fjes/fjes_main.c @@ -1237,8 +1237,15 @@ static int fjes_probe(struct platform_device *plat_dev) adapter->open_guard = false; adapter->txrx_wq = alloc_workqueue(DRV_NAME "/txrx", WQ_MEM_RECLAIM, 0); + if (unlikely(!adapter->txrx_wq)) + goto err_free_netdev; + adapter->control_wq = alloc_workqueue(DRV_NAME "/control", WQ_MEM_RECLAIM, 0); + if (unlikely(!adapter->control_wq)) { + destroy_workqueue(adapter->txrx_wq); + goto err_free_netdev; + } INIT_WORK(&adapter->tx_stall_task, fjes_tx_stall_task); INIT_WORK(&adapter->raise_intr_rxdata_task, -- 1.9.1
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