This is a note to let you know that I've just added the patch titled
md/raid10: fix wrong setting of max_corr_read_errors
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
md-raid10-fix-wrong-setting-of-max_corr_read_errors.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3ac2cda1e64e9661ec83abeb47a94e2514a776f6
Author: Li Nan <linan122@xxxxxxxxxx>
Date: Mon May 22 15:25:34 2023 +0800
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: 1e50915fe0bb ("raid: improve MD/raid10 handling of correctable read errors.")
Signed-off-by: Li Nan <linan122@xxxxxxxxxx>
Reviewed-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Signed-off-by: Song Liu <song@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230522072535.1523740-3-linan666@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index ad3e666b9d735..2e23a898fc978 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4337,6 +4337,8 @@ 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;
}
