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io_uring: don't setup async context for read/write fixed
We don't need it, and if we have it, then the retry handler will attempt
to copy the non-existent iovec with the inline iovec, with a segment
count that doesn't make sense.
Fixes: f67676d160
("io_uring: ensure async punted read/write requests copy iovec")
Reported-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -1786,6 +1786,9 @@ static int io_setup_async_rw(struct io_kiocb *req, ssize_t io_size,
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struct iovec *iovec, struct iovec *fast_iov,
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struct iov_iter *iter)
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{
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if (req->opcode == IORING_OP_READ_FIXED ||
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req->opcode == IORING_OP_WRITE_FIXED)
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return 0;
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if (!req->io && io_alloc_async_ctx(req))
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return -ENOMEM;
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