diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:51:51 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-09-24 12:02:58 +0200 |
| commit | d9a01959d9c954c8fe1d132b52401b0e219e37f6 (patch) | |
| tree | e008895dfbf76ef117b088852d7c3e3e4a4c1cb8 | |
| parent | ec2f16f180ae65b7c7179b4bb71af5fb2650f036 (diff) | |
x86/platform/uv: Annotate struct uv_rtc_timer_head 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).
Found with Coccinelle:
https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Add __counted_by for struct uv_rtc_timer_head.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175151.work.118-kees@kernel.org
| -rw-r--r-- | arch/x86/platform/uv/uv_time.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/platform/uv/uv_time.c b/arch/x86/platform/uv/uv_time.c index 54663f3e00cb..ff5afc8a5a41 100644 --- a/arch/x86/platform/uv/uv_time.c +++ b/arch/x86/platform/uv/uv_time.c @@ -53,7 +53,7 @@ struct uv_rtc_timer_head { struct { int lcpu; /* systemwide logical cpu number */ u64 expires; /* next timer expiration for this cpu */ - } cpu[]; + } cpu[] __counted_by(ncpus); }; /* |