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Date: Sat, 21 Aug 2021 09:21:25 +0300 From: Vasily Averin <vvs@...tuozzo.com> To: Christoph Paasch <christoph.paasch@...il.com> Cc: "David S. Miller" <davem@...emloft.net>, Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>, David Ahern <dsahern@...nel.org>, Jakub Kicinski <kuba@...nel.org>, Eric Dumazet <eric.dumazet@...il.com>, netdev <netdev@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, kernel@...nvz.org, Julian Wiedmann <jwi@...ux.ibm.com> Subject: Re: [PATCH NET v4 3/7] ipv6: use skb_expand_head in ip6_xmit On 8/21/21 1:44 AM, Christoph Paasch wrote: > (resend without html - thanks gmail web-interface...) > On Fri, Aug 20, 2021 at 3:41 PM Christoph Paasch >> AFAICS, this is because pskb_expand_head (called from >> skb_expand_head) is not adjusting skb->truesize when skb->sk is set >> (which I guess is the case in this particular scenario). I'm not >> sure what the proper fix would be though... Could you please elaborate? it seems to me skb_realloc_headroom used before my patch called pskb_expand_head() too and did not adjusted skb->truesize too. Am I missed something perhaps? The only difference in my patch is that skb_clone can be not called, though I do not understand how this can affect skb->truesize. Thank you, Vasily Averin
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