From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0A48B8F40 for ; Sun, 16 Jul 2023 20:31:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84431C433C7; Sun, 16 Jul 2023 20:31:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689539489; bh=x+Sd5ueUO/aNEOa653HOCOQL6K/IBMhmM/aSlnIqtgI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u4KkLjto02WD7YEFKLjMb3/NaI3ygojSouyXSnwbSXC6Ab0tqSD53inEdqb3QxTWu SzaYQL2IvTAWd4NDuxd1z2PbSncg/ucS3fQ8ez1MpjwCWzCn1eRL9s9wXS7w2OlyYr IrJcO6m76VL64wIQlkZYsTeJNVcCmAqTG+2Sg5j4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Li Nan , Yu Kuai , Song Liu , Sasha Levin Subject: [PATCH 6.1 026/591] md/raid10: fix wrong setting of max_corr_read_errors Date: Sun, 16 Jul 2023 21:42:45 +0200 Message-ID: <20230716194924.542061636@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230716194923.861634455@linuxfoundation.org> References: <20230716194923.861634455@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Li Nan [ Upstream commit f8b20a405428803bd9881881d8242c9d72c6b2b2 ] There is no input check when echo md/max_read_errors and overflow might occur. Add check of input number. Fixes: 1e50915fe0bb ("raid: improve MD/raid10 handling of correctable read errors.") Signed-off-by: Li Nan Reviewed-by: Yu Kuai Signed-off-by: Song Liu Link: https://lore.kernel.org/r/20230522072535.1523740-3-linan666@huaweicloud.com Signed-off-by: Sasha Levin --- drivers/md/md.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/md.c b/drivers/md/md.c index 0c97531d35038..829e1bd9bcbf9 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4513,6 +4513,8 @@ max_corrected_read_errors_store(struct mddev *mddev, const char *buf, size_t len rv = kstrtouint(buf, 10, &n); if (rv < 0) return rv; + if (n > INT_MAX) + return -EINVAL; atomic_set(&mddev->max_corr_read_errors, n); return len; } -- 2.39.2