mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-30 06:10:56 +00:00
Code Issues Releases Wiki Activity

net: dsa: sja1105: Check return value

Browse source 
Return NULL if we got unexpected value from skb_trim_rcsum() in
sja1110_rcv_inband_control_extension()

Fixes: 4913b8ebf8 ("net: dsa: add support for the SJA1110 native tagging protocol")
Signed-off-by: Artem Chernyshev <artem.chernyshev@red-soft.ru>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20221201140032.26746-3-artem.chernyshev@red-soft.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Artem Chernyshev 2022-12-01 17:00:32 +03:00 committed by Jakub Kicinski
parent d4edb50688
commit 8948876335
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
net/dsa/tag_sja1105.c
View file

@ -665,7 +665,8 @@ static struct sk_buff *sja1110_rcv_inband_control_extension(struct sk_buff *skb,
* padding and trailer we need to account for the fact that
* skb->data points to skb_mac_header(skb) + ETH_HLEN.
*/
pskb_trim_rcsum(skb, start_of_padding - ETH_HLEN);
if (pskb_trim_rcsum(skb, start_of_padding - ETH_HLEN))
return NULL;
/* Trap-to-host frame, no timestamp trailer */
} else {
*source_port = SJA1110_RX_HEADER_SRC_PORT(rx_header);