[PATCH net-next 2/4] gro: change the BUG_ON() in gro_pull_from_frag0()
From: Eric Dumazet <edumazet@google.com>
Date: 2026-01-22 04:57:25
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Replace the BUG_ON() which never fired with a DEBUG_NET_WARN_ON_ONCE() $ scripts/bloat-o-meter -t vmlinux.1 vmlinux.2 add/remove: 2/2 grow/shrink: 1/1 up/down: 370/-254 (116) Function old new delta gro_try_pull_from_frag0 - 196 +196 napi_gro_frags 771 929 +158 __pfx_gro_try_pull_from_frag0 - 16 +16 __pfx_gro_pull_from_frag0 16 - -16 dev_gro_receive 1514 1464 -50 gro_pull_from_frag0 188 - -188 Total: Before=22565899, After=22566015, chg +0.00% Signed-off-by: Eric Dumazet <edumazet@google.com> --- net/core/gro.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/gro.c b/net/core/gro.c
index 76f9c3712422109ad00f15f6804abf6a8b00db43..ad326c7cdc0a1f31c416ffe60cc492d3fcd7b050 100644
--- a/net/core/gro.c
+++ b/net/core/gro.c@@ -415,7 +415,7 @@ static void gro_pull_from_frag0(struct sk_buff *skb, int grow) { struct skb_shared_info *pinfo = skb_shinfo(skb); - BUG_ON(skb->end - skb->tail < grow); + DEBUG_NET_WARN_ON_ONCE(skb->end - skb->tail < grow); memcpy(skb_tail_pointer(skb), NAPI_GRO_CB(skb)->frag0, grow);
--
2.52.0.457.g6b5491de43-goog