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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:49:30 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-18 14:43:21 -0700 |
| commit | a1cfa251f8d99b8a446c395a84ec9c537d3d8c45 (patch) | |
| tree | bf6558a81b7d45e3b091ca2651386fb756b06f9f /fs/ocfs2 | |
| parent | 9bf2850c9170b52a6ab052085feced55effa78ef (diff) | |
| download | linux-a1cfa251f8d99b8a446c395a84ec9c537d3d8c45.tar.gz | |
ocfs2: annotate struct ocfs2_replay_map 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 ocfs2_replay_map.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Link: https://lkml.kernel.org/r/20230922174925.work.293-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Tom Rix <trix@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/journal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index ce215565d061e..604fea3a26ff0 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -90,7 +90,7 @@ enum ocfs2_replay_state { struct ocfs2_replay_map { unsigned int rm_slots; enum ocfs2_replay_state rm_state; - unsigned char rm_replay_slots[]; + unsigned char rm_replay_slots[] __counted_by(rm_slots); }; static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) |