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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-03-25 14:00:43 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-03-25 14:43:53 +0100 |
| commit | 8197b053a83335dd1b7eb7581a933924e25c1025 (patch) | |
| tree | 3844abb6d83a181ff588b15861ad7589a0da2702 /drivers | |
| parent | io_uring: fix invalid flags for io_put_kbuf() (diff) | |
| download | linux-8197b053a83335dd1b7eb7581a933924e25c1025.tar.xz linux-8197b053a83335dd1b7eb7581a933924e25c1025.zip | |
io_uring: fix put_kbuf without proper locking
io_put_kbuf_comp() should only be called while holding
->completion_lock, however there is no such assumption in io_clean_op()
and thus it can corrupt ->io_buffer_comp. Take the lock there, and
workaround the only user of io_clean_op() calling it with locks. Not
the prettiest solution, but it's easier to refactor it for-next.
Fixes: cc3cec8367cba ("io_uring: speedup provided buffer handling")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/743e2130b73ec6d48c4c5dd15db896c433431e6d.1648212967.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions