From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DC137143895 for ; Thu, 16 May 2024 15:49:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715874557; cv=none; b=c24+R/qivvayQn3bIeyV/0p9dvcOcfMVyE5VdZLCNTZ1YVh5X2Cpj+kPooxJp5cjytsZ2EBHBiGFfvZqbpz5/8G6Rs777mlIYqsZVFbbfHDszpuMP5xkReOJYeQQj5pb2zz9XSezHppJSEB6aL3/BCmOOG2pH2wzSZfCLACgkbQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715874557; c=relaxed/simple; bh=xFcKxnrqOdZ6PUt0MN/5m5P3hjOllGJtNyi6Y3cFKPo=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=j1wrrd6W6McM7OQXtWmsf9jTEJb02GrVxJD/WQpPZtejBUKLjN3yZMnKsde3o2NJ5xwnTvQc3lyacoOqPdjDwOKS7rvCtTfj7TkGkQri40T1T9Li8zzKAGbq5kFzeTsFG4ghxMDdF81/6nLeak2yI0h9Lwxy5IDloR/Z6BDiUM0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-7d9fde69c43so869480239f.1 for ; Thu, 16 May 2024 08:49:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715874555; x=1716479355; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Uzybynlll8aTlRUTGkiirdKXhhmo+chE7YKKEdoW2Dg=; b=YrOmzvLu1s8CVthmivt/TIZPdXWLHlevUY4oaLdeBNCjIyqesqahRB6KuJfZ5MvxmM KMUfze4l8EWFSk7todapLvwOCHV/D5s2e8bxupSKxsN8bJ4CI2/eQrx+YOz7a8hKwE6d oYldUFupNEmKRv39AQjXMLVXv+KUg0KINapEpXwLdG/s3p+2+8JFwF4kqEBHb7zo6/or vvQaSytNpcudOAWnrJcH1TF0KmNmC5gQhnLca2aocV662YsM7YjmF6MaYQf9Kgaq8PES vT/4wwSLdw8iCev2P18WRUhCX7b9hKRteFmf3WkmmRu7s9VvZRp+OMrIGrXimkWzt6JZ uFeQ== X-Gm-Message-State: AOJu0YzQ5nAAPfSnxdTdJQiGXS96pfyvS41goSJnNl3DbxC8qLS5QYLI 3T6WPFMe8Thjj1JNpXE3B+2ZSy07OjKQ86qeV1W7EZFc/k1QffV+tEFRmzS8GAKrR1nITXtouBW yGhMKydpF/aC4OFSXIBx6iTddpRJuOt3nUK4N1VLJ8qUV6vIhGRmO2R8= X-Google-Smtp-Source: AGHT+IH99AGHDkez492I2+Ury/bIa6UFSuDDUv7plK5Wuh3kReSs/83KqG4W7DDTh4mlRZrZZq08Dwtu5y89dKLBXLpe62ASJ/GF Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:1351:b0:7cc:2522:f5fd with SMTP id ca18e2360f4ac-7e1b51a9835mr117464639f.1.1715874553556; Thu, 16 May 2024 08:49:13 -0700 (PDT) Date: Thu, 16 May 2024 08:49:13 -0700 In-Reply-To: <0000000000007e4a2e0616fdde23@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003e82ae0618942dcd@google.com> Subject: Re: [syzbot] Test for 5681e40d297b30f5b513 From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Test for 5681e40d297b30f5b513 Author: syoshida@redhat.com #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 71b1543c83d65af8215d7558d70fc2ecbee77dcf diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c index a6fb89fa6278..7e8a20f2fc42 100644 --- a/net/can/j1939/main.c +++ b/net/can/j1939/main.c @@ -30,10 +30,6 @@ MODULE_ALIAS("can-proto-" __stringify(CAN_J1939)); /* CAN_HDR: #bytes before can_frame data part */ #define J1939_CAN_HDR (offsetof(struct can_frame, data)) -/* CAN_FTR: #bytes beyond data part */ -#define J1939_CAN_FTR (sizeof(struct can_frame) - J1939_CAN_HDR - \ - sizeof(((struct can_frame *)0)->data)) - /* lowest layer */ static void j1939_can_recv(struct sk_buff *iskb, void *data) { @@ -342,7 +338,7 @@ int j1939_send_one(struct j1939_priv *priv, struct sk_buff *skb) memset(cf, 0, J1939_CAN_HDR); /* make it a full can frame again */ - skb_put(skb, J1939_CAN_FTR + (8 - dlc)); + skb_put_zero(skb, 8 - dlc); canid = CAN_EFF_FLAG | (skcb->priority << 26) |