io_uring: ensure we clear io_kiocb->result before each issue
We use io_kiocb->result == -EAGAIN as a way to know if we need to re-submit a polled request, as -EAGAIN reporting happens out-of-line for IO submission failures. This field is cleared when we originally allocate the request, but it isn't reset when we retry the submission from async context. This can cause issues where we think something needs a re-issue, but we're really just reading stale data. Reset ->result whenever we re-prep a request for polled submission. Cc: stable@vger.kernel.org Fixes: 9e645e11 ("io_uring: add support for sqe links") Reported-by:Bijan Mottahedeh <bijan.mottahedeh@oracle.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
parent
d848074b
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