aio: Fix incorrect usage of eventfd_signal_allowed()

We should defer eventfd_signal() to the workqueue when eventfd_signal_allowed() return false rather than return true. Fixes: b542e38 ("eventfd: Make signal recursion protection a task bit") Signed-off-by: Xie Yongji <[email protected]> Link: https://lore.kernel.org/r/[email protected] Reviewed-by: Eric Biggers <[email protected]> Signed-off-by: Eric Biggers <[email protected]>
wafgo · Dec 9, 2021 · 4b37498 · 4b37498
1 parent 50252e4
commit 4b37498
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/aio.c b/fs/aio.c
@@ -1760,7 +1760,7 @@ static int aio_poll_wake(struct wait_queue_entry *wait, unsigned mode, int sync,
 		list_del_init(&req->wait.entry);
 		list_del(&iocb->ki_list);
 		iocb->ki_res.res = mangle_poll(mask);
-		if (iocb->ki_eventfd && eventfd_signal_allowed()) {
+		if (iocb->ki_eventfd && !eventfd_signal_allowed()) {
 			iocb = NULL;
 			INIT_WORK(&req->work, aio_poll_put_work);
 			schedule_work(&req->work);