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From: Muchun Song <songmuchun@bytedance.com>
To: axboe@kernel.dk, viro@zeniv.linux.org.uk
Cc: linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
	linux-kernel@vger.kernel.org, zhuyinyin@bytedance.com,
	Muchun Song <songmuchun@bytedance.com>
Subject: [PATCH v2 4/5] io_uring: Fix missing save the current thread files
Date: Wed, 23 Sep 2020 19:44:18 +0800	[thread overview]
Message-ID: <20200923114419.71218-5-songmuchun@bytedance.com> (raw)
In-Reply-To: <20200923114419.71218-1-songmuchun@bytedance.com>

We forget to save the current thread files, in this case, we can not
send SIGINT signal to the kworker because the files is not equal.

Fixes: 54ee77961e79 ("io_uring: Fix NULL pointer dereference in io_sq_wq_submit_work()")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
---
 fs/io_uring.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 12e68ea00a543..c65f78f395655 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2391,6 +2391,8 @@ static bool io_add_to_prev_work(struct async_list *list, struct io_kiocb *req)
 	if (ret) {
 		struct io_ring_ctx *ctx = req->ctx;
 
+		req->files = current->files;
+
 		spin_lock_irq(&ctx->task_lock);
 		list_add(&req->task_list, &ctx->task_list);
 		req->work_task = NULL;
-- 
2.11.0


  parent reply	other threads:[~2020-09-23 11:44 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-23 11:44 [PATCH v2 0/5] io_uring: Fix async workqueue is not canceled on some corner case Muchun Song
2020-09-23 11:44 ` [PATCH v2 1/5] io_uring: Fix resource leaking when kill the process Muchun Song
2020-09-23 11:44 ` [PATCH v2 2/5] io_uring: Fix missing smp_mb() in io_cancel_async_work() Muchun Song
2020-09-23 11:44 ` [PATCH v2 3/5] io_uring: Fix remove irrelevant req from the task_list Muchun Song
2020-09-23 11:44 ` Muchun Song [this message]
2020-10-06 20:26   ` [PATCH v2 4/5] io_uring: Fix missing save the current thread files Jens Axboe
2020-09-23 11:44 ` [PATCH v2 5/5] io_uring: Fix double list add in io_queue_async_work() Muchun Song
2020-09-28 12:50 ` [PATCH v2 0/5] io_uring: Fix async workqueue is not canceled on some corner case Muchun Song
2020-10-06 20:26   ` Jens Axboe
2020-10-07  1:50     ` [External] " Muchun Song

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