From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp134-31.sina.com.cn (smtp134-31.sina.com.cn [180.149.134.31]) (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 3FF4638C for ; Sun, 17 Nov 2024 00:04:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=180.149.134.31 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731801886; cv=none; b=LXcAcneAGC0Dn0faMjAyRqpQ7Pa14XB3NYlFH59L2LPSgejYJ3uWszRFO0vR0+xNd+RUo6F5SHvmutc2miq8fv/IN8AULjpX++v2sI/99vOaVEtF3lTdfN67Zxa9pYzlaqWSnI4ZHqY8NCPksvyK/yQjlqVMo53ttCWc8VBxysk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731801886; c=relaxed/simple; bh=i6b/yIsSvZb4T2a7FoaH1/7TqIKGkgnZWaavWoFrOLc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=hTDRdTPTYM6/x9GunGsZ37f0IbGC3r1bd9JIXnw1CR6Sm6J8DpUKtmxvBCW0zTPCwUSBdc/eSX/Hr0b7GjoNMl9DMVV3q4DtwexlQRJ6bvLoBbxeKPTHfh5X9dWzrHkMHICXk69lJJSGRSQZLEb3/tJatHSMV9nEStR7UjoDsdM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; arc=none smtp.client-ip=180.149.134.31 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([113.118.70.242]) by sina.com (10.185.250.21) with ESMTP id 6739327800001260; Sun, 17 Nov 2024 08:02:04 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 8350033408272 X-SMAIL-UIID: F732DA9C15834E2389E48CB1747C11F5-20241117-080204-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] WARNING in sk_skb_reason_drop Date: Sun, 17 Nov 2024 08:01:54 +0800 Message-Id: <20241117000154.1285-1-hdanton@sina.com> In-Reply-To: <6738e539.050a0220.e1c64.0002.GAE@google.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Sat, 16 Nov 2024 10:32:25 -0800 > syzbot found the following issue on: > > HEAD commit: a58f00ed24b8 net: sched: cls_api: improve the error messag.. > git tree: net-next > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14f481a7980000 #syz test --- x/net/ipv4/route.c +++ y/net/ipv4/route.c @@ -2478,7 +2478,7 @@ ip_route_input_rcu(struct sk_buff *skb, int our = 0; if (!in_dev) - return -EINVAL; + return reason; our = ip_check_mc_rcu(in_dev, daddr, saddr, ip_hdr(skb)->protocol); --