Messages in this thread Patch in this message | | | From | linan666@huaweicl ... | Subject | [PATCH v4 2/3] md/raid10: fix wrong setting of max_corr_read_errors | Date | Mon, 22 May 2023 15:25:34 +0800 |
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From: Li Nan <linan122@huawei.com>
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@huawei.com> Reviewed-by: Yu Kuai <yukuai3@huawei.com> --- drivers/md/md.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/md/md.c b/drivers/md/md.c index b2d69260b5b1..350094f1cb09 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; } -- 2.31.1
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