From 89465d923bda180299e69ee2800aab84ad0ba689 Mon Sep 17 00:00:00 2001 From: Penglei Jiang Date: Sun, 15 Jun 2025 09:39:06 -0700 Subject: [PATCH] io_uring: fix task leak issue in io_wq_create() Add missing put_task_struct() in the error path Cc: stable@vger.kernel.org Fixes: 0f8baa3c9802 ("io-wq: fully initialize wqe before calling cpuhp_state_add_instance_nocalls()") Signed-off-by: Penglei Jiang Link: https://lore.kernel.org/r/20250615163906.2367-1-superman.xpt@gmail.com Signed-off-by: Jens Axboe --- io_uring/io-wq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/io_uring/io-wq.c b/io_uring/io-wq.c index cd1fcb115739a..be91edf34f013 100644 --- a/io_uring/io-wq.c +++ b/io_uring/io-wq.c @@ -1259,8 +1259,10 @@ struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data) atomic_set(&wq->worker_refs, 1); init_completion(&wq->worker_done); ret = cpuhp_state_add_instance_nocalls(io_wq_online, &wq->cpuhp_node); - if (ret) + if (ret) { + put_task_struct(wq->task); goto err; + } return wq; err: -- 2.47.2