diff options
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 94b1a0f48fed..eb4bc8967178 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -4959,6 +4959,9 @@ static void __io_queue_proc(struct io_poll_iocb *poll, struct io_poll_table *pt, pt->error = -EINVAL; return; } + /* double add on the same waitqueue head, ignore */ + if (poll->head == head) + return; poll = kmalloc(sizeof(*poll), GFP_ATOMIC); if (!poll) { pt->error = -ENOMEM; |