| commit | 311ae9e159d81a1ec1cf645daf40b39ae5a0bd84 | [log] [tgz] |
|---|---|---|
| author | Pavel Begunkov <asml.silence@gmail.com> | Sun Nov 24 11:58:24 2019 +0300 |
| committer | Jens Axboe <axboe@kernel.dk> | Mon Nov 25 19:56:11 2019 -0700 |
| tree | 08f3dbc913f0459274073109bd6c47d83cdac82b | |
| parent | f8e85cf255ad57d65eeb9a9d0e59e3dec55bdd9e [diff] |
io_uring: fix dead-hung for non-iter fixed rw Read/write requests to devices without implemented read/write_iter using fixed buffers can cause general protection fault, which totally hangs a machine. io_import_fixed() initialises iov_iter with bvec, but loop_rw_iter() accesses it as iovec, dereferencing random address. kmap() page by page in this case Cc: stable@vger.kernel.org Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>