| commit | 25a2de679b5d55ead2f99881c7d3e9b745325f39 | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <axboe@kernel.dk> | Mon Nov 23 09:37:51 2020 -0700 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Jan 06 14:56:50 2021 +0100 |
| tree | fb6cf8838cbe0529f1df4ff8b5c1594e6c674a1c | |
| parent | 7247bc60e8e1458d89ea53179fce02d2307aac7f [diff] |
io_uring: use bottom half safe lock for fixed file data commit ac0648a56c1ff66c1cbf735075ad33a26cbc50de upstream. io_file_data_ref_zero() can be invoked from soft-irq from the RCU core, hence we need to ensure that the file_data lock is bottom half safe. Use the _bh() variants when grabbing this lock. Reported-by: syzbot+1f4ba1e5520762c523c6@syzkaller.appspotmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>