diff options
| author | Kees Cook <keescook@chromium.org> | 2018-08-17 15:44:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-17 16:20:27 -0700 |
| commit | ab62ef82ea49b8814f4b0e2fe61426acda793fb9 (patch) | |
| tree | 0d008a528dc3753c12383c928e776f6d012d388e /fs/ntfs/dir.c | |
| parent | 2c27ce915078a5822aefb5db7bc2481664b26044 (diff) | |
ntfs: mft: remove VLA usage
In the quest to remove all stack VLA usage from the kernel[1], this
allocates the maximum size stack buffer. Existing checks already
require that blocksize >= NTFS_BLOCK_SIZE and mft_record_size <=
PAGE_SIZE, so max_bhs can be at most PAGE_SIZE / NTFS_BLOCK_SIZE.
Sanity checks are added for robustness.
[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
Link: http://lkml.kernel.org/r/20180626172909.41453-4-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ntfs/dir.c')
0 files changed, 0 insertions, 0 deletions