| commit | 9803387c55f7d2ce69aa64340c5fdc6b3027dbc8 | [log] [tgz] |
|---|---|---|
| author | Theodore Ts'o <tytso@mit.edu> | Sun Dec 15 01:09:03 2019 -0500 |
| committer | Theodore Ts'o <tytso@mit.edu> | Sun Dec 15 18:05:20 2019 -0500 |
| tree | 7074d366004eb513473463ea2e11b5d348ef284a | |
| parent | a70fd5ac2ea787cafe07b69dadd16b3648ad64ac [diff] |
ext4: validate the debug_want_extra_isize mount option at parse time Instead of setting s_want_extra_size and then making sure that it is a valid value afterwards, validate the field before we set it. This avoids races and other problems when remounting the file system. Link: https://lore.kernel.org/r/20191215063020.GA11512@mit.edu Cc: stable@kernel.org Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reported-and-tested-by: syzbot+4a39a025912b265cacef@syzkaller.appspotmail.com