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-rw-r--r--kernel/futex.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index 4eeb63de7e54..1f6d646eee4a 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -900,7 +900,7 @@ static int attach_to_pi_owner(u32 uval, union futex_key *key,
if (!p)
return -ESRCH;
- if (!p->mm) {
+ if (unlikely(p->flags & PF_KTHREAD)) {
put_task_struct(p);
return -EPERM;
}