| Message ID | 9134e63fd0d42787e4fbd4bd890d330d6fda9f81.1628097645.git.pabeni@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | [net-next] net: fix GRO skb truesize update | expand |
On Wed, 4 Aug 2021, Paolo Abeni wrote: > commit 5e10da5385d2 ("skbuff: allow 'slow_gro' for skb carring sock > reference") introduces a serious regression at the GRO layer setting > the wrong truesize for stolen-head skbs. > > Restore the correct truesize: SKB_DATA_ALIGN(...) instead of > SKB_TRUESIZE(...) > > Reported-by: Mat Martineau <mathew.j.martineau@linux.intel.com> > Fixes: 5e10da5385d2 ("skbuff: allow 'slow_gro' for skb carring sock reference") > Signed-off-by: Paolo Abeni <pabeni@redhat.com> With this patch I'm no longer seeing the WARN_ON_ONCE() fire in skb_try_coalesce(). Thanks Paolo! Tested-by: Mat Martineau <mathew.j.martineau@linux.intel.com> > --- > net/core/skbuff.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/net/core/skbuff.c b/net/core/skbuff.c > index 97ed77a86bb0..02a603556408 100644 > --- a/net/core/skbuff.c > +++ b/net/core/skbuff.c > @@ -4375,7 +4375,7 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb) > memcpy(frag + 1, skbinfo->frags, sizeof(*frag) * skbinfo->nr_frags); > /* We dont need to clear skbinfo->nr_frags here */ > > - new_truesize = SKB_TRUESIZE(sizeof(struct sk_buff)); > + new_truesize = SKB_DATA_ALIGN(sizeof(struct sk_buff)); > delta_truesize = skb->truesize - new_truesize; > skb->truesize = new_truesize; > NAPI_GRO_CB(skb)->free = NAPI_GRO_FREE_STOLEN_HEAD; > -- -- Mat Martineau Intel
Hello: This patch was applied to netdev/net-next.git (refs/heads/master): On Wed, 4 Aug 2021 21:07:00 +0200 you wrote: > commit 5e10da5385d2 ("skbuff: allow 'slow_gro' for skb carring sock > reference") introduces a serious regression at the GRO layer setting > the wrong truesize for stolen-head skbs. > > Restore the correct truesize: SKB_DATA_ALIGN(...) instead of > SKB_TRUESIZE(...) > > [...] Here is the summary with links: - [net-next] net: fix GRO skb truesize update https://git.kernel.org/netdev/net-next/c/af352460b465 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 97ed77a86bb0..02a603556408 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -4375,7 +4375,7 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb) memcpy(frag + 1, skbinfo->frags, sizeof(*frag) * skbinfo->nr_frags); /* We dont need to clear skbinfo->nr_frags here */ - new_truesize = SKB_TRUESIZE(sizeof(struct sk_buff)); + new_truesize = SKB_DATA_ALIGN(sizeof(struct sk_buff)); delta_truesize = skb->truesize - new_truesize; skb->truesize = new_truesize; NAPI_GRO_CB(skb)->free = NAPI_GRO_FREE_STOLEN_HEAD;
commit 5e10da5385d2 ("skbuff: allow 'slow_gro' for skb carring sock reference") introduces a serious regression at the GRO layer setting the wrong truesize for stolen-head skbs. Restore the correct truesize: SKB_DATA_ALIGN(...) instead of SKB_TRUESIZE(...) Reported-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Fixes: 5e10da5385d2 ("skbuff: allow 'slow_gro' for skb carring sock reference") Signed-off-by: Paolo Abeni <pabeni@redhat.com> --- net/core/skbuff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)