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| author | Gustavo A. R. Silva <[email protected]> | 2023-10-09 14:44:54 -0600 |
|---|---|---|
| committer | David Sterba <[email protected]> | 2023-10-11 11:37:19 +0200 |
| commit | 75f5f60bf7ee075ed4a29637ce390898b4c36811 (patch) | |
| tree | 5dc8aafc51194160280f71ac9e62ab6ba6e20959 /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | 54f67decddeb47680f08c720c94b4d4f67181442 (diff) | |
btrfs: add __counted_by for struct btrfs_delayed_item and use struct_size()
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for
array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
While there, use struct_size() helper, instead of the open-coded
version, to calculate the size for the allocation of the whole
flexible structure, including of course, the flexible-array member.
This code was found with the help of Coccinelle, and audited and
fixed manually.
Reviewed-by: Kees Cook <[email protected]>
Signed-off-by: Gustavo A. R. Silva <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions