rtw88: fix potential NULL skb access in TX ISR

Browse source

[ Upstream commit f4f84ff837 ]

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: e3037485c6 ("rtw88: new Realtek 802.11ac driver")
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Yan-Hsuan Chuang 2020-01-07 16:08:07 +08:00 • committed by Greg Kroah-Hartman

parent 6b9c88af6f

commit 6e4af087c8

1 changed files with 5 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

drivers/net/wireless/realtek/rtw88/pci.c

View file