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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
Message-Id: <20200923114419.71218-5-songmuchun@bytedance.com>
In-Reply-To: <20200923114419.71218-1-songmuchun@bytedance.com>
References: <20200923114419.71218-1-songmuchun@bytedance.com>
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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