From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from Chamillionaire.breakpoint.cc (Chamillionaire.breakpoint.cc [91.216.245.30]) (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 9393D36EA95; Tue, 17 Feb 2026 16:33:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.216.245.30 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771346001; cv=none; b=qx/SvKxfwNCr4fKEEfFesNGP6eWf/TWOoE/C2HY+sbj5m7QZlky5oKYqA/aXq8T3QgVlTxSf/e0kCNAfVka7l0bxP7PzeJTM/JbW/ROBz8G+Ylpnda6mhXo3OC80RWqGoXzFIoyGL5/MWZxwFZSh5q7Xv+yVQtmqnw1IHIU9cQc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771346001; c=relaxed/simple; bh=fPkas7wFQs96+aNOpMbmbcM2fGDzBggtocSFqi/crUw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VA/JPyE085PXgXyt4SZ+ryoF99jE6KzEkRLeKykjN0OpnYNJC7zm5vn64QK6t9b7zPi0TLAvR2nDILOlkmklDS+/Jq7U4K46AwN9pnFUEU5Ym6m8zRVM89rWN7OgyquUmZ/qPhlXlUwCTZQledJk2/f/1EvGhhWQDkWeLzDqoc8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=strlen.de; spf=pass smtp.mailfrom=Chamillionaire.breakpoint.cc; arc=none smtp.client-ip=91.216.245.30 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=strlen.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=Chamillionaire.breakpoint.cc Received: by Chamillionaire.breakpoint.cc (Postfix, from userid 1003) id 2D50160CF9; Tue, 17 Feb 2026 17:33:19 +0100 (CET) From: Florian Westphal To: Cc: Paolo Abeni , "David S. Miller" , Eric Dumazet , Jakub Kicinski , , pablo@netfilter.org Subject: [PATCH net 09/10] net: remove WARN_ON_ONCE when accessing forward path array Date: Tue, 17 Feb 2026 17:32:32 +0100 Message-ID: <20260217163233.31455-10-fw@strlen.de> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260217163233.31455-1-fw@strlen.de> References: <20260217163233.31455-1-fw@strlen.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Pablo Neira Ayuso Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARN_ON_ONCE if userspace manages to build a sufficiently long forward path. Remove it. Fixes: ddb94eafab8b ("net: resolve forwarding path from virtual netdevice and HW destination address") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Florian Westphal --- net/core/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index 96f89eb797e8..096b3ff13f6b 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -744,7 +744,7 @@ static struct net_device_path *dev_fwd_path(struct net_device_path_stack *stack) { int k = stack->num_paths++; - if (WARN_ON_ONCE(k >= NET_DEVICE_PATH_STACK_MAX)) + if (k >= NET_DEVICE_PATH_STACK_MAX) return NULL; return &stack->path[k]; -- 2.52.0