Commit 58b2251e authored Sep 30, 2014 by Hante Meuleman Committed by John W. Linville Sep 30, 2014

brcmfmac: Fix crash on cleanup.



When driver gets unloaded due to error situation there is a chance
a packet gets received while fws has already been cleaned up. This
will result in kernel crash. This patch adds a check to avoid this
crash.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent f48556e1

drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1636,7 +1636,7 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
		if (!signal_len)
		return 0;
		/* if flow control disabled, skip to packet data and leave */
		if (!fws->fw_signals) {
		if ((!fws) \|\| (!fws->fw_signals)) {
		skb_pull(skb, signal_len);
		return 0;
		}