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uid_cputime: Check for the range while removing range of UIDs. 

Checking if the uid_entry->uid matches the uid intended to be removed will
prevent deleting unwanted uid_entry.
Type cast the key for the hashtable to the same size, as when they were
inserted. This will make sure that we can find the uid_entry we want.

Bug: 25195548
Change-Id: I567942123cfb20e4b61ad624da19ec4cc84642c1
Signed-off: Ruchi kandoi <kandoiruchi@google.com>
This commit is contained in:
Ruchi Kandoi 2015-10-23 17:49:11 -07:00 committed by Srinivasarao P
parent ac261c337a
commit e518034ac6
1 changed files with 5 additions and 4 deletions
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9
drivers/misc/uid_cputime.c
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@ -174,14 +174,15 @@ static ssize_t uid_remove_write(struct file *file,
kstrtol(end_uid, 10, &uid_end) != 0) {
return -EINVAL;
}
mutex_lock(&uid_lock);
for (; uid_start <= uid_end; uid_start++) {
hash_for_each_possible_safe(hash_table, uid_entry, tmp,
hash, uid_start) {
hash_del(&uid_entry->hash);
kfree(uid_entry);
hash, (uid_t)uid_start) {
if (uid_start == uid_entry->uid) {
hash_del(&uid_entry->hash);
kfree(uid_entry);
}
}
}