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(parent: 20f2c5f) | patch
rtw88: fix potential NULL skb access in TX ISR
authorYan-Hsuan Chuang <yhchuang@realtek.com>
Tue, 7 Jan 2020 08:08:07 +0000 (16:08 +0800)
committerKalle Valo <kvalo@codeaurora.org>
Sun, 26 Jan 2020 15:42:31 +0000 (17:42 +0200)
commitf4f84ff8377d4cedf18317747bc407b2cf657d0f
tree904e494898ef8d2ed34450873e13077b542d968ftree | snapshot
parent20f2c5fa3af060401c72e444999470a4cab641cfcommit | diff
rtw88: fix potential NULL skb access in TX ISR

Sometimes the TX queue may be empty and we could possible
dequeue a NULL pointer, crash the kernel. If the skb is NULL
then there is nothing to do, just leave the ISR.

And the TX queue should not be empty here, so print an error
to see if there is anything wrong for DMA ring.

Fixes: e3037485c68e ("rtw88: new Realtek 802.11ac driver")
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
drivers/net/wireless/realtek/rtw88/pci.c diff | blob | history
Domain: System / Kernel;