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| author | Kees Cook <keescook@chromium.org> | 2023-08-17 13:35:02 -0700 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2023-09-12 16:09:32 -0400 |
| commit | 97f576eb38ae219a6fb337d13586d8acbf01d3f8 (patch) | |
| tree | 520239d8ecdd0fa68038220ba63d54859396ffc3 | |
| parent | 0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff) | |
| download | lwn-97f576eb38ae219a6fb337d13586d8acbf01d3f8.tar.gz lwn-97f576eb38ae219a6fb337d13586d8acbf01d3f8.zip | |
audit: Annotate struct audit_chunk with __counted_by
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 checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct audit_chunk.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Paul Moore <paul@paul-moore.com>
Cc: Eric Paris <eparis@redhat.com>
Cc: audit@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
| -rw-r--r-- | kernel/audit_tree.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c index e867c17d3f84..85a5b306733b 100644 --- a/kernel/audit_tree.c +++ b/kernel/audit_tree.c @@ -34,7 +34,7 @@ struct audit_chunk { struct list_head list; struct audit_tree *owner; unsigned index; /* index; upper bit indicates 'will prune' */ - } owners[]; + } owners[] __counted_by(count); }; struct audit_tree_mark { |