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From: Bixuan Cui <[email protected]>
To: <[email protected]>, <[email protected]>
Cc: <[email protected]>, <[email protected]>, <[email protected]>
Subject: [PATCH -next] io-wq: Fix memory leak in create_io_worker
Date: Thu, 9 Sep 2021 16:49:19 +0800	[thread overview]
Message-ID: <[email protected]> (raw)

If io_should_retry_thread is false, free the worker before goto fails.

Fixes: 3146cba99aa2 ("io-wq: make worker creation resilient against signals")
Reported-by: [email protected]
Signed-off-by: Bixuan Cui <[email protected]>
---
 fs/io-wq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/io-wq.c b/fs/io-wq.c
index d80e4a735677..036953f334d4 100644
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -759,6 +759,7 @@ static bool create_io_worker(struct io_wq *wq, struct io_wqe *wqe, int index)
 	if (!IS_ERR(tsk)) {
 		io_init_new_worker(wqe, worker, tsk);
 	} else if (!io_should_retry_thread(PTR_ERR(tsk))) {
+		kfree(worker);
 		goto fail;
 	} else {
 		INIT_WORK(&worker->work, io_workqueue_create);
-- 
2.17.1


             reply	other threads:[~2021-09-09  8:53 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-09  8:49 Bixuan Cui [this message]
2021-09-09 12:58 ` [PATCH -next] io-wq: Fix memory leak in create_io_worker Jens Axboe

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