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io_uring: fix punting req w/o grabbed env 

It's not enough to check for REQ_F_WORK_INITIALIZED and punt async
assuming that io_req_work_grab_env() was called, it may not have been.
E.g. io_close_prep() and personality path set the flag without further
async init.

As a quick fix, always pass next work through io_req_task_queue().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
zero-sugar-mainline-defconfig
Pavel Begunkov 2020-06-27 14:04:55 +03:00 committed by Jens Axboe
parent 8ef77766ba
commit 906a8c3fdb
1 changed files with 2 additions and 6 deletions
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8
fs/io_uring.c
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@ -1766,12 +1766,8 @@ static void io_free_req(struct io_kiocb *req)
io_req_find_next(req, &nxt);
__io_free_req(req);
if (nxt) {
if (nxt->flags & REQ_F_WORK_INITIALIZED)
io_queue_async_work(nxt);
else
io_req_task_queue(nxt);
}
if (nxt)
io_req_task_queue(nxt);
}
/*