From nobody Thu Dec 18 03:57:05 2025 Received: from out162-62-57-64.mail.qq.com (out162-62-57-64.mail.qq.com [162.62.57.64]) (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 232332ECEBB for ; Mon, 15 Dec 2025 08:52:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.57.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765788745; cv=none; b=CSwQQdPWw6aeR6rfB8Nr/ap/lYVtzaTw2nsQd66jAgkwzbq1VgLir35WQxP84DbMIFBIFvPB7TR0dzRp7CZe/PLii6pgH1ShEEIJBi5z/0DRcGFRQ5g3EtCryKB1EKQdsBA+a4zr9/I7GmPk50UZqjjBuMk8k+ArjprdxM365A4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765788745; c=relaxed/simple; bh=hW2K/fcjGyMesT9g5ra2O1gbcJn/xMcV5LyzQ94vQ9E=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=VVseN/sGdF2Pt1mjiQ8Gxiq9AqTrBASdSNW2vClrbaDj0J0W5GYY9r7KGjNdrv68rxEg3HcjLizuuSj9ElPFAbXM+zs1D6KLHmlh69cZ7s4FmHmxFsjWL30GWik7dtxbFewANzzyb0JOcbs7g1zWoM6X0R0moIKh+GwYqFcHcVk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foxmail.com; spf=pass smtp.mailfrom=foxmail.com; dkim=pass (1024-bit key) header.d=foxmail.com header.i=@foxmail.com header.b=SQ5FlD+T; arc=none smtp.client-ip=162.62.57.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foxmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foxmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=foxmail.com header.i=@foxmail.com header.b="SQ5FlD+T" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1765788731; bh=fAIdqPVHp03tUudHOjlx8DIQesqN9sITihqambyafro=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=SQ5FlD+T35HWmSus/xA7nwJbBAH6pqtg00fjnU8VFkcYFzG6ReCFzsy+gRbWS1tFH dhF0HXOnk7NhmP2X8AAWQhyCsOzcxjp3uMI+vMuEx+B6znzK3s7dGNwlKXvn4oqVRX ++RVdls3KatQimD0W0GSKU8X+CECoeD9HXNlqFYs= Received: from localhost.localdomain ([116.128.244.169]) by newxmesmtplogicsvrszc43-0.qq.com (NewEsmtp) with SMTP id CC13F8DE; Mon, 15 Dec 2025 16:51:01 +0800 X-QQ-mid: xmsmtpt1765788661tikyn41kr Message-ID: X-QQ-XMAILINFO: MDbayGdXPuoeBcAsI7YuXoe9Lvg+LslasOui3i7p9B5YPe/kgxARGb6io6iZYj TPuACNsv+Udsp5d84n4hh40JLXwZgktcPmu/B/4wsg/MreS6Po2XqG7vo0Lqm+LqX5ddhVhf7sXx jY2bMh5ZIZGStetOpmf9nYm5yBoZThwqzBqXrExox4hIGXfcguKNn07jgje5yFk5Fwqqbzdm6FS1 /OdizxNNE0ZvtJOMPb05d58Fd+ZTi0/9XsK/ZnE8mqwSaCUPJHaMaOhomG1EK/FUnOSvz0tXQ6+Y wvfyrBOUcrgfY7YiV9jstvYA9u94UVfcksgvrpt4pwGz9YunaIatBVazcZtwohUS9c7ZM0hofFZv 455taHdZ48B6Srh0wO4pTI4Hcus3hCtyc1ZKutbA4g5CBc+sDuAnWEy1FOZ6fax9EG/6B9d2MInB jJGOeUsZORkcTRwiioomHcMGAq5uKiD1StWIEXLxmk5FwrvLj0FIYMjXlXONh2BIQDY0kuqPu7Tg 9XFMMCQ6guCb7G3s98jkQ9c8fv3QbZbJ/6OPK0rFg+RSCT/WrQ6sGUqw9wWTlUaUXb5UQN4BCAoc DtSpX2YPDZ96tqEkxXEOPaO+5+S1VBu2vPPODlFyfQYKpOt8HMTbyauLVjAYKXELoKH9FExwpJbs UhOYYsDztyNAKAbEMQoy2joNb9o26qffclWd8wld0vk1SLF2f0YndWNqZuWXYZ+gmVgEBgVShcD1 vISUFoMtZuMLIbBcLtvkmBBaFzijqcCr9gGCuI7M5GvoIcfn4hQ58BqXSGexXIVHeGv4vW2Xrttt 0bcZUOBTlS+GnLhmi/bE6bRPh1KPQyK5WcfmmsuTw8qr1gzaz96iCuLvGoP+WQfNYQeS2uRrdYzz IFwzo+c92W8r3Fup6fyRQu8zTRbiL05z0lKTWctdDTQ7cJvjrHGdntXO6roSRj2CwzvBTH0A8CRN 33+SRZVa1i4A3U5ctTHQpWNBrOJgEEEL00jc8vfLhGMvstwlVbpLTrf+n9Th0GaV/fYpvbRKicLr a493JvLqNIq+imkC3l X-QQ-XMRINFO: NyFYKkN4Ny6FSmKK/uo/jdU= From: xiaopeitux@foxmail.com To: syzbot+f238baf6ded841b5a82e@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, Pei Xiao Subject: [PATCH] comedi: test kmemleak Date: Mon, 15 Dec 2025 16:50:59 +0800 X-OQ-MSGID: X-Mailer: git-send-email 2.25.1 In-Reply-To: <693fc12e.a70a0220.104cf0.0338.GAE@google.com> References: <693fc12e.a70a0220.104cf0.0338.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Pei Xiao #syz test Reported-by: syzbot+f238baf6ded841b5a82e@syzkaller.appspotmail.com Tested-by: syzbot+f238baf6ded841b5a82e@syzkaller.appspotmail.com --- drivers/comedi/comedi_fops.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/comedi/comedi_fops.c b/drivers/comedi/comedi_fops.c index 657c98cd723e..283a64613208 100644 --- a/drivers/comedi/comedi_fops.c +++ b/drivers/comedi/comedi_fops.c @@ -1935,6 +1935,11 @@ static int do_cmd_ioctl(struct comedi_device *dev, return 0; =20 cleanup: + + if (async && async->cmd.chanlist) { + kfree(async->cmd.chanlist); + async->cmd.chanlist =3D NULL; + } do_become_nonbusy(dev, s); =20 return ret; --=20 2.25.1