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authorKees Cook <keescook@chromium.org>2023-09-22 19:49:30 +0200
committerAndrew Morton <akpm@linux-foundation.org>2023-10-18 23:43:21 +0200
commita1cfa251f8d99b8a446c395a84ec9c537d3d8c45 (patch)
treebf6558a81b7d45e3b091ca2651386fb756b06f9f
parentkstrtox: remove strtobool() (diff)
downloadlinux-a1cfa251f8d99b8a446c395a84ec9c537d3d8c45.tar.xz
linux-a1cfa251f8d99b8a446c395a84ec9c537d3d8c45.zip
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>
-rw-r--r--fs/ocfs2/journal.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index ce215565d061..604fea3a26ff 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)