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-rw-r--r--ipc/util.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/ipc/util.c b/ipc/util.c
index 0027e47626b7..d48d8cfa1f3f 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -788,21 +788,13 @@ struct pid_namespace *ipc_seq_pid_ns(struct seq_file *s)
static struct kern_ipc_perm *sysvipc_find_ipc(struct ipc_ids *ids, loff_t pos,
loff_t *new_pos)
{
- struct kern_ipc_perm *ipc;
- int total, id;
-
- total = 0;
- for (id = 0; id < pos && total < ids->in_use; id++) {
- ipc = idr_find(&ids->ipcs_idr, id);
- if (ipc != NULL)
- total++;
- }
+ struct kern_ipc_perm *ipc = NULL;
+ int max_idx = ipc_get_maxidx(ids);
- ipc = NULL;
- if (total >= ids->in_use)
+ if (max_idx == -1 || pos > max_idx)
goto out;
- for (; pos < ipc_mni; pos++) {
+ for (; pos <= max_idx; pos++) {
ipc = idr_find(&ids->ipcs_idr, pos);
if (ipc != NULL) {
rcu_read_lock();