[PATCH 0/3] Ioctl buffer name/path validation

[David Sterba <dsterba@suse.com>]

This is inspired by a report and fix [1] where device replace buffers
were not properly validated (third patch). The other two are doing
proper validation of vol args path or name so that an unterminated
string is reported as an error rather than relying on later actions like
open that would catch an invalid path.

(I'm OK to replace the third patch in favor of Edward as he spent time
analyzing it but we did not agree on a fix and I did not get a reply
with the suggestion I implemented in the end.)

[1] https://lore.kernel.org/linux-btrfs/tencent_44CA0665C9836EF9EEC80CB9E7E206DF5206@qq.com/

David Sterba (3):
  btrfs: factor out validation of btrfs_ioctl_vol_args::name
  btrfs: factor out validation of btrfs_ioctl_vol_args_v2::name
  btrfs: dev-replace: properly validate device names

 fs/btrfs/dev-replace.c | 24 +++++++++++++++----
 fs/btrfs/fs.h          |  2 ++
 fs/btrfs/ioctl.c       | 54 +++++++++++++++++++++++++++++++++++-------
 fs/btrfs/super.c       |  5 +++-
 4 files changed, 72 insertions(+), 13 deletions(-)

-- 
2.42.1