Commit 7d5d7b50 authored by Shaohua Li's avatar Shaohua Li

md/raid5: cap worker count

static checker reports a potential integer overflow. Cap the worker count to
avoid the overflow.

Reported:-by: Dan Carpenter <>
Signed-off-by: default avatarShaohua Li <>
parent c4d6a1b8
......@@ -6575,14 +6575,17 @@ static ssize_t
raid5_store_group_thread_cnt(struct mddev *mddev, const char *page, size_t len)
struct r5conf *conf;
unsigned long new;
unsigned int new;
int err;
struct r5worker_group *new_groups, *old_groups;
int group_cnt, worker_cnt_per_group;
if (len >= PAGE_SIZE)
return -EINVAL;
if (kstrtoul(page, 10, &new))
if (kstrtouint(page, 10, &new))
return -EINVAL;
/* 8192 should be big enough */
if (new > 8192)
return -EINVAL;
err = mddev_lock(mddev);
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