6.1-stable review patch. If anyone has any objections, please let me know.
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From: Alok Tiwari alok.a.tiwari@oracle.com
[ Upstream commit 12c331b29c7397ac3b03584e12902990693bc248 ]
gve_alloc_pending_packet() can return NULL, but gve_tx_add_skb_dqo() did not check for this case before dereferencing the returned pointer.
Add a missing NULL check to prevent a potential NULL pointer dereference when allocation fails.
This improves robustness in low-memory scenarios.
Fixes: a57e5de476be ("gve: DQO: Add TX path") Signed-off-by: Alok Tiwari alok.a.tiwari@oracle.com Reviewed-by: Mina Almasry almasrymina@google.com Reviewed-by: Simon Horman horms@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/google/gve/gve_tx_dqo.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/google/gve/gve_tx_dqo.c b/drivers/net/ethernet/google/gve/gve_tx_dqo.c index eabed3deca763..e32d9967966bc 100644 --- a/drivers/net/ethernet/google/gve/gve_tx_dqo.c +++ b/drivers/net/ethernet/google/gve/gve_tx_dqo.c @@ -452,6 +452,9 @@ static int gve_tx_add_skb_no_copy_dqo(struct gve_tx_ring *tx, int i;
pkt = gve_alloc_pending_packet(tx); + if (!pkt) + return -ENOMEM; + pkt->skb = skb; pkt->num_bufs = 0; completion_tag = pkt - tx->dqo.pending_packets;