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 7A8EC14B959 for ; Thu, 16 May 2024 14:48:45 +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=1715870928; cv=none; b=dvH8OZ+R5Xvt+aRasY+q2gweIh2yDzzd0A+vdzsiaFS1mWLSKYJTTeAtv8zxlFQHBKrLitM6thiBRR3WRAYzdtU/eMyEtRyJyl7IMYAH7W/qtW6bWor3UWRG7mXSeGfifDw9UZRI6f6VpzFQfl9oDTTUMr9B6hDKO3gNcwihJ0o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715870928; c=relaxed/simple; bh=6bjpy2R23BCG5xOBILH4E+1osU51ofiN4fTAHBzuyP4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=ssw/307qhr4OK7NzHUm3GUzPEOP9ce1Mx5gXYdsHegDvMVbHizvZHV7NkC6sEjSbIg8EnNUm43EdKUrImBTePx6nBqL0Fm1x1HnFwRwALobXg594tkTLtPyGJ1NlMwOxWoAFQetHmPHm/G2mpPZ11CLduYgjl1TO5BXbfo5BphI= 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-7e1d3e81a00so614013039f.1 for ; Thu, 16 May 2024 07:48:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715870925; x=1716475725; 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=jIfzr+hfxXE0Yom5oh+at3Y9Ho3Ikwwt+w53cnIzr7I=; b=q4EZyzkMLnOn3fwgjSm3h6+DAJAn9pa7xSdzExYzohkwShPKPHYTJpbrSD0cKe78/A TaCGLivA1DJ1aUnudUbBYM6VWQmnFpWplNVe9FLLkFJwf45o0VMyXD2ltNExcowSoPDw VtsQFZT/lrslx6caeuZBjiCPzKSyYqvXG93IPiitWOy+S+1MdrxGPTFd/pYVLxZ725eP KjYKZVcsCN2ktXXD31IXvPWQWJOIOARQ1b+b9MiPmbpGhM3AqG7HJOG9PiAvdIR/1i+O Ci0fvXhUQkuEsG+dZhUyAE9/iJbZ/nR58ZOZ33nRBJqQ0dmGrfWzn86rqFu1p+QsMhVw B7yw== X-Gm-Message-State: AOJu0Yx+kIC220lgfujsp9IId1ElD+leObIggrUo/sZrNqYm2/+1H6Z3 QOUcrDo7Y35VcsmN8UupJVAWTiIirQrCY66GAevYvH0+8dEoT3Qazb4Sm0K3YbCE49NYl/nkemq hPDY2FXOa96nRqxekJv0t4XZvhWzzOX25sXU5sGMnyKWAfQSKwZ0Ng0w= X-Google-Smtp-Source: AGHT+IHZ14Sr1btn4O3xqJW0Fmcbj8mE4cPYkoAThKl7EPyIbNe1tAR8tBFt/xxz0puCSco/+cIS9E+Owhnhzpvo067q3HhQYEzd Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:2727:b0:488:ac5a:7fe9 with SMTP id 8926c6da1cb9f-48958e0d6e5mr1135126173.4.1715870925031; Thu, 16 May 2024 07:48:45 -0700 (PDT) Date: Thu, 16 May 2024 07:48:45 -0700 In-Reply-To: <0000000000007e4a2e0616fdde23@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f79cb1061893548e@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 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) |