From patchwork Sun Aug 25 07:10:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Edward Adam Davis X-Patchwork-Id: 823037 Received: from out162-62-58-211.mail.qq.com (out162-62-58-211.mail.qq.com [162.62.58.211]) (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 20AEA54BD8; Sun, 25 Aug 2024 07:10:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.58.211 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724569814; cv=none; b=IOQYoq1WyosMAvQ1wIrsgn1VwsJGhscwjnb5eWItH8MLMJdp+dwXIxjz9qNIchk4M324zGnK5HjKzY0uJpS8RgtrFAMyGmz/oH5W8A1e+Emj0mOZNUfz+qhVQf3QCtEWt5xssF1NmNmM5qubxmoiOj72EjW4R74IVJOYRIifqOU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724569814; c=relaxed/simple; bh=Fj/EmX7ib+Lfvn/AxCnJP32ADVfuI4FzB2LfAg7KANc=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=tYLirvwmdk4KgF99ASAG0ZkfKyzOAyipnJC6ERaIfXJ6SM4NFW60gxK2oXgbr2j+zznuYHoYXP10Jp7U2dgmKv02G9o4t5zbRxDKc3zGupILAbPcQdrTs+bm8gp0K9luiDUGBeh7dlm6xXkrtpoLr78Azp4tbhx6PoCplwUkIrk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=rCQdQiKq; arc=none smtp.client-ip=162.62.58.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="rCQdQiKq" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1724569805; bh=/semDDU5zsCaTr6xGw92C8FIyWfsAShZ+BMdvutBH7E=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=rCQdQiKqdwBpZo0lLWp/KeDov4Lmng+Nrl4p0iIuXV4UwluS0jLjo925APk7JrquH X4uGT7aL1tFpFk9VH6hSJknXoobn4ydij8Ogyh9lR5SUlAmt12DpRJJSjaVmnsIGcM WPdPyuMfJEVqCfGC90y5+iXLxDqllTjWgenMM5iE= Received: from pek-lxu-l1.wrs.com ([111.198.225.4]) by newxmesmtplogicsvrszb9-1.qq.com (NewEsmtp) with SMTP id 282166DE; Sun, 25 Aug 2024 15:10:02 +0800 X-QQ-mid: xmsmtpt1724569802tzo9ofaex Message-ID: X-QQ-XMAILINFO: OdIVOfqOaVcri8+zm2SchNSIlQI0PU8lRV3EsHnwgGb1XrYFR/S8hz4dSIvMx9 xXqqhxW7elDd5E44hOZSxQiaMbhnmYSTz3CvwSYxiFodjRj5nYkLylGLpkUztXyaJy+ElKFbl8AE tZ0yVV2R+YhZa9mSmbUKbmYNXV3sqry0x5oTPa+DbvMP1pWzywfDCgMMrXdF/sapBAGBmJsx6WDN QIa/9DdZhgzxSz99JZE1HTb5KVar88esE5LUttT/8ba5gGnCffUr2ncargrCEpht3IDBKWoPpbh4 ls3arvy2tS7lXgA0eA0AljB/FNKiQJ1ilqRUfzNbe1HgYdWNMSsA5YNHqbgGsr3LkDZTxlWCzZFE +KuqyhdTUStiU7ccIrUOYgN0peKkiw2cClVKGhkhOJIQUsCd1xG0vRZ1n03fAETw8KeaH59eVBiq JdU5Y+z0qcvKiUYuXdGGxTQH4fni+YW0gJXri3h1caacj0imKTZOJvem/gmTiJh5U/aAYuWVT2az uJwUYadWcG6c86CD8ET6Chc9T2vYUjj8PW4yLirwwdrXlJCY2ZVDB5UUkuxH93iD3a9V2rMO0TmA QWsdzj02hGpENA8Z0WEbA0q6n6wcWVBOE2iDf/7/vBdib2H0Lo5Rq8l3GvMJ/th+0Q8FKUs9CLRK FiVFVpUCykP+MLX3o1Ny4zGA7vnccoeSK33x+3qppNswFtGaHKXG1Ta8/djhH8VM9vNXXROAxLz7 oAZkG7ueftWinU2fYhyNaUk7ri6NJ/U8yueFC0AJzndn3ooBzAQcK4SpGwVMO3wvbbx5fo1nZCP0 BEHkID9eEZWEObjwzp1maB1SoCW8NcgOtJzQadpB9Dr1GKYQCQ/iyjBcKMtCnOfLSX/z5xAAjMIM LpMb2baDKJ9fPhWBtGt4j5r032tD/9MOb9EczCA8PWsa1Dmfqyfl3RlngUMUayZAxYICtJE7u6Bw HbJFSdhLI= X-QQ-XMRINFO: M/715EihBoGSf6IYSX1iLFg= From: Edward Adam Davis To: syzbot+92c6dd14aaa230be6855@syzkaller.appspotmail.com Cc: kvalo@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: [PATCH] wifi: ath6kl: Check that the read operation returns a data length of 0 Date: Sun, 25 Aug 2024 15:10:03 +0800 X-OQ-MSGID: <20240825071002.2186643-2-eadavis@qq.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <00000000000096ee8f061e991433@google.com> References: <00000000000096ee8f061e991433@google.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 If the data length returned by the device is 0, the read operation should be considered a failure. Reported-and-tested-by: syzbot+92c6dd14aaa230be6855@syzkaller.appspotmail.com Signed-off-by: Edward Adam Davis --- drivers/net/wireless/ath/ath6kl/usb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/ath/ath6kl/usb.c b/drivers/net/wireless/ath/ath6kl/usb.c index 5220809841a6..2a89bab81b24 100644 --- a/drivers/net/wireless/ath/ath6kl/usb.c +++ b/drivers/net/wireless/ath/ath6kl/usb.c @@ -1034,6 +1034,9 @@ static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len) ath6kl_err("Unable to read the bmi data from the device: %d\n", ret); return ret; + } else { + ath6kl_err("Actual read the bmi data length is 0 from the device\n"); + return -EIO; } return 0;