Commit 31c805a4 authored May 22, 2023 by Li Nan Committed by Greg Kroah-Hartman Jul 27, 2023

md/raid10: fix wrong setting of max_corr_read_errors



[ Upstream commit f8b20a405428803bd9881881d8242c9d72c6b2b2 ]

There is no input check when echo md/max_read_errors and overflow might
occur. Add check of input number.

Fixes: 1e50915f ("raid: improve MD/raid10 handling of correctable read errors.")
Signed-off-by: Li Nan <linan122@huawei.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230522072535.1523740-3-linan666@huaweicloud.com


Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 283f4a63

drivers/md/md.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -4441,6 +4441,8 @@ 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;
		}