From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f69.google.com (mail-ot1-f69.google.com [209.85.210.69]) (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 7131A2C15BB for ; Wed, 22 Apr 2026 18:50:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776883839; cv=none; b=dAxuvbnuKUYz0f6mn8s/8uHgbSYS8TRzAqtIBNyj0jUx9JNaIW2Pt6ScLB/Hj3m+rvTCUGsL9Z0/xWLdDsJ01yvNr6iiA3vorOmriWYxbUeZruzVvgv6FU3to3MFhFCiz189uspLU+hCSCSpDvAPWsdQOmumBjpiqQ8ZD1psx9s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776883839; c=relaxed/simple; bh=pKfVZUtoGCBsFkBE7vJkNId+Tej9wjqwkuH95FUtZ84=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=a6mSaj1fnb3PMGK26Y1HrJJaZrh5oKEbraiRL768ONIsk/fQBeUwWSHzQnx7wX25b6dakXFdgsNf0UM0VLWPYSGcs0yXsnkjJfMxtDsCgj+c1KtBFjTWH8ABEeX80z7FRMIYuwWKmtbJXA7L4l8MlAJJt0Na45jtmwHMIzELx4U= 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=209.85.210.69 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-ot1-f69.google.com with SMTP id 46e09a7af769-7dcd9f8dbe2so3503978a34.1 for ; Wed, 22 Apr 2026 11:50:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776883837; x=1777488637; 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=Ummjg+ctXVxqb6Y/lfzxfHKS5my1C5tCouq4oGRVrZk=; b=nLEEDTUix1Vn2znbr4fDBtGI8QrAxXNyycUdZxBJQNGp49ABG/r6rRWrEHgvjZ4tEg 0R1/ZgETJ8YRRfhU1LDtuYO7j4svQq8hZ9B/Pys7KMG2jr/SouDBuF1f4nPlYWCprU1b gDUOwOWvn4UoP8+34YS2EQ07Uux/BlZ1BUCM/rI3AZjzCh+NyRdUwK03gggfAT/Sqg0x O4Ro9n25i7PXX/GaOICMSS8gFlyXeoGT45FKoprtYLxvmeUV/BXIKRCo90F7wfVLrjVN hpUB3fT5m1KvwggToNb1uQaIUxdnrZQhy0lTvh30xocc5EqLVSanHzHtnmqhBt09RS0o uOBQ== X-Gm-Message-State: AOJu0YwZzfT/Ya5Bnf2Pamiohi0hlDNh0zC15zyVC+UAZXg8JN/VK2XR aBuas1nRYdnJ9QVbf7z88pjzLU9GE0umm63dcV/p8cPIK2uvRVfdyETm/Lx86zLWQOIvteWsArQ we8UkEwTGg1R2EPHPX1rKS5pjgpZ4vwAybe+mh9Kyq6uxtOJ5ZcMSRGQqG0o= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:a29a:20b0:694:8428:dfd2 with SMTP id 006d021491bc7-6948428e0e9mr5707142eaf.43.1776883837497; Wed, 22 Apr 2026 11:50:37 -0700 (PDT) Date: Wed, 22 Apr 2026 11:50:37 -0700 In-Reply-To: <69322f1d.a70a0220.d98e3.01e2.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69e9187d.a00a0220.17a17.002e.GAE@google.com> Subject: Forwarded: [PATCH 1/1] media: dvb-usb-v2: ce6230: fix bug when sending usb_control_msg of size 0 From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: [PATCH 1/1] media: dvb-usb-v2: ce6230: fix bug when sending usb_control_msg of size 0 Author: jakovnovak30@gmail.com #syz test --- drivers/media/usb/dvb-usb-v2/ce6230.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/media/usb/dvb-usb-v2/ce6230.c b/drivers/media/usb/dvb-usb-v2/ce6230.c index 7ebaf3ee4491..dd3aa45b56a3 100644 --- a/drivers/media/usb/dvb-usb-v2/ce6230.c +++ b/drivers/media/usb/dvb-usb-v2/ce6230.c @@ -23,6 +23,13 @@ static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req) value = req->value; index = req->index; + if (!req->data_len) { + dev_err(&d->udev->dev, + "%s: cannot send crtl_msg of size 0", + KBUILD_MODNAME); + return -ENOBUFS; + } + switch (req->cmd) { case I2C_READ: case DEMOD_READ: -- 2.53.0