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| author | Theodore Ts'o <tytso@mit.edu> | 2018-05-07 11:37:58 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-06-05 09:08:21 -0600 |
| commit | d2ac838e4cd7e5e9891ecc094d626734b0245c99 (patch) | |
| tree | b93df5a59844ad585b25dad0ee85890a2cc0fbae /drivers/lightnvm/pblk-gc.c | |
| parent | d377535405686f735b90a8ad4ba269484cd7c96e (diff) | |
| download | linux-stable-d2ac838e4cd7e5e9891ecc094d626734b0245c99.tar.gz linux-stable-d2ac838e4cd7e5e9891ecc094d626734b0245c99.tar.bz2 linux-stable-d2ac838e4cd7e5e9891ecc094d626734b0245c99.zip | |
loop: add recursion validation to LOOP_CHANGE_FD
Refactor the validation code used in LOOP_SET_FD so it is also used in
LOOP_CHANGE_FD. Otherwise it is possible to construct a set of loop
devices that all refer to each other. This can lead to a infinite
loop in starting with "while (is_loop_device(f)) .." in loop_set_fd().
Fix this by refactoring out the validation code and using it for
LOOP_CHANGE_FD as well as LOOP_SET_FD.
Reported-by: syzbot+4349872271ece473a7c91190b68b4bac7c5dbc87@syzkaller.appspotmail.com
Reported-by: syzbot+40bd32c4d9a3cc12a339@syzkaller.appspotmail.com
Reported-by: syzbot+769c54e66f994b041be7@syzkaller.appspotmail.com
Reported-by: syzbot+0a89a9ce473936c57065@syzkaller.appspotmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk-gc.c')
0 files changed, 0 insertions, 0 deletions