diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:52:00 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-10-06 13:25:17 -0700 |
| commit | cfa36f889f232eb32e15b4ea6a688a5c5a9d19e9 (patch) | |
| tree | 4f1262f482c9b3a34d4f137068677506f3366b96 /arch/sparc/kernel | |
| parent | cba58fcbc4ab75d8814ec43db32d4830670526f8 (diff) | |
sparc: Annotate struct cpuinfo_tree 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 cpuinfo_tree.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175159.work.357-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/cpumap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/kernel/cpumap.c b/arch/sparc/kernel/cpumap.c index f07ea88a83af..8fcf2d8c6bd2 100644 --- a/arch/sparc/kernel/cpumap.c +++ b/arch/sparc/kernel/cpumap.c @@ -50,7 +50,7 @@ struct cpuinfo_tree { /* Offsets into nodes[] for each level of the tree */ struct cpuinfo_level level[CPUINFO_LVL_MAX]; - struct cpuinfo_node nodes[]; + struct cpuinfo_node nodes[] __counted_by(total_nodes); }; |