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 DC6158F70 for ; Sun, 16 Jul 2023 19:54:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61036C433C7; Sun, 16 Jul 2023 19:54:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689537266; bh=C9O9SUTkQ9o1XTxmgMS7bHRimIg6rjni63h4XCCKGk4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oL2xhgi/2W1EA0QhmEcM7jdm65/yCI55kC2j9BugGAQByCH5DSjxMKPDsceeFxEuL 2q3sbN1OVXzVG1K7p+fqgR0VOvAsGe5h849Ncw7Zzs+yZE+kecgfcE806wPndu7QPW fkxV3PMwMrzNedpgx6VbCkG+KoHa+I7Wj5n49MiU= 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 6.4 035/800] md/raid10: fix wrong setting of max_corr_read_errors Date: Sun, 16 Jul 2023 21:38:08 +0200 Message-ID: <20230716194949.912348859@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230716194949.099592437@linuxfoundation.org> References: <20230716194949.099592437@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 b2d69260b5b1c..350094f1cb09f 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4478,6 +4478,8 @@ 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