mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-07 23:20:32 -04:00
Code Issues Packages Projects Releases Wiki Activity

net: ethernet: ti: am65-cpsw-nuss: Fix null pointer dereference for ndev

Browse Source 
In the TX completion packet stage of TI SoCs with CPSW2G instance, which
has single external ethernet port, ndev is accessed without being
initialized if no TX packets have been processed. It results into null
pointer dereference, causing kernel to crash. Fix this by having a check
on the number of TX packets which have been processed.

Fixes: 9a369ae3d1 ("net: ethernet: ti: am65-cpsw: remove am65_cpsw_nuss_tx_compl_packets_2g()")
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250829121051.2031832-1-c-vankar@ti.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Nishanth Menon
2025-08-29 17:40:51 +05:30
committed by Paolo Abeni
parent e27e34bc99
commit a6099f263e
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/ti/am65-cpsw-nuss.c
View File

@@ -1522,7 +1522,7 @@ static int am65_cpsw_nuss_tx_compl_packets(struct am65_cpsw_common *common,
}
}
if (single_port) {
if (single_port && num_tx) {
netif_txq = netdev_get_tx_queue(ndev, chn);
netdev_tx_completed_queue(netif_txq, num_tx, total_bytes);
am65_cpsw_nuss_tx_wake(tx_chn, ndev, netif_txq);