From: Ameer Hamza <amhamza.mgc@gmail.com>
Date: Sun, 5 Dec 2021 23:38:10 +0500
Subject: gve: fix for null pointer dereference.
Patch-mainline: v5.16-rc5
Git-commit: e6f60c51f0435862020bcd2d1e3257caaafe5650
References: bsc#1191655
Avoid passing NULL skb to __skb_put() function call if
napi_alloc_skb() returns NULL.
Fixes: 37149e9374bf ("gve: Implement packet continuation for RX.")
Signed-off-by: Ameer Hamza <amhamza.mgc@gmail.com>
Link: https://lore.kernel.org/r/20211205183810.8299-1-amhamza.mgc@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/google/gve/gve_utils.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/google/gve/gve_utils.c
+++ b/drivers/net/ethernet/google/gve/gve_utils.c
@@ -68,6 +68,9 @@ struct sk_buff *gve_rx_copy(struct net_d
set_protocol = ctx->curr_frag_cnt == ctx->expected_frag_cnt - 1;
} else {
skb = napi_alloc_skb(napi, len);
+
+ if (unlikely(!skb))
+ return NULL;
set_protocol = true;
}
__skb_put(skb, len);