From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7262C43991A; Mon, 31 Aug 2026 13:59:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788184744; cv=none; b=swnnff9Fm2OQIXKfhTBwU12lJuM2lvUGMqpNaS7Wiq3hiW7xDTAHiZqXPllCW2pKNREwBYcKWS+RPcAEt27cze108Uk7WIWXOWOoAJyZRK1K14Zj+Fp6PxDazkmT3hGYvaS52cV80THF3qNvoqWo+6VSi2Aslg8siw6VMLkSqIs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788184744; c=relaxed/simple; bh=3ukteNYGzVgMxlyFp4WZqmVpsEWqj21F92cAFZpFDbs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oT5udb7XA0hX2BF+VtgIEUoPwrvWkRZqwFRyJWJQd/gGtyDh8HibPm5us1azUT0R2/2hWut/9LD548eviRIH4Shc5RlUx3uF0KZYpWl084Sisb8ZgQyVJYQntTsjje1xjQL9zbUW5/oJd7rl1YpXHZGD2KZHm+qGaXft2l4mZjs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cr4iNrHa; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="cr4iNrHa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CBFE31F000E9; Mon, 31 Aug 2026 13:59:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788184742; bh=KB7lhYhksb27sqDqjMlLX/bFUuQg5jZ6L9RPZuFW8Qo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=cr4iNrHaG2r3fSTQrPycnO+oCHm/Q2EKBEkxZSCyATGylHOqmiZpp3hi+gj+w2+PT 7jM4OsUBszzwq6ZPCf/9ndogua7zmBIWzVBgZr4eYVODNixiSeV/XQvHapd/itcU7X 3jk/soglqXvPI0estGLFegO8QUFFgizr5jPQlTqA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Julian Anastasov , Florian Westphal , Denis Arefev , Sasha Levin Subject: [PATCH 6.1 06/92] ipvs: reload ip header after head reallocation Date: Mon, 31 Aug 2026 15:34:04 +0200 Message-ID: <20260831133359.797334965@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260831133359.482388899@linuxfoundation.org> References: <20260831133359.482388899@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Westphal commit a2f57827bf7c695b8c72dc4511cae8e86582369d upstream. __ip_vs_get_out_rt() calls skb_ensure_writable() which may reallocate skb->head. Fixes: 8d8e20e2d7bb ("ipvs: Decrement ttl") Cc: stable@vger.kernel.org Assisted-by: Claude:claude-sonnet-4-6 Acked-by: Julian Anastasov Signed-off-by: Florian Westphal [Denis Arefev: adapted for 5.10/6.1: keep EnterFunction/LeaveFunction instrumentation] Signed-off-by: Denis Arefev Signed-off-by: Sasha Levin --- net/netfilter/ipvs/ip_vs_xmit.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c index 63dd0a3d251f8..79d6e3b4e2c03 100644 --- a/net/netfilter/ipvs/ip_vs_xmit.c +++ b/net/netfilter/ipvs/ip_vs_xmit.c @@ -707,15 +707,13 @@ int ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp, struct ip_vs_iphdr *ipvsh) { - struct iphdr *iph = ip_hdr(skb); - EnterFunction(10); - if (__ip_vs_get_out_rt(cp->ipvs, cp->af, skb, NULL, iph->daddr, + if (__ip_vs_get_out_rt(cp->ipvs, cp->af, skb, NULL, ip_hdr(skb)->daddr, IP_VS_RT_MODE_NON_LOCAL, NULL, ipvsh) < 0) goto tx_error; - ip_send_check(iph); + ip_send_check(ip_hdr(skb)); /* Another hack: avoid icmp_send in ip_fragment */ skb->ignore_df = 1; -- 2.53.0