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blk-iocost: check return value of match_u64() 

This patch fixs that the return value of match_u64() from ioc_qos_write()
is not checked,

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20230117070806.3857142-2-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Yu Kuai 2023-01-17 15:08:02 +08:00 committed by Jens Axboe
parent 5f2779dfa7
commit 7b7c5ae440
1 changed files with 2 additions and 1 deletions
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3
block/blk-iocost.c
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@ -3214,7 +3214,8 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
switch (match_token(p, qos_ctrl_tokens, args)) {
case QOS_ENABLE:
match_u64(&args[0], &v);
if (match_u64(&args[0], &v))
goto einval;
enable = v;
continue;
case QOS_CTRL: