diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2019-11-24 11:58:24 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-11-25 19:56:11 -0700 |
| commit | 311ae9e159d81a1ec1cf645daf40b39ae5a0bd84 (patch) | |
| tree | 08f3dbc913f0459274073109bd6c47d83cdac82b /fs/io-wq.c | |
| 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>
Diffstat (limited to 'fs/io-wq.c')
0 files changed, 0 insertions, 0 deletions