diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:52:35 -0700 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2023-09-25 19:38:27 +0100 |
| commit | cb289ce6e2ce4cee594285d0c1e0249ae868c1de (patch) | |
| tree | 32a34516ca48d102102619a1291572b11e4a2c43 /drivers/bus | |
| parent | 0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff) | |
bus: vexpress-config: Annotate struct vexpress_syscfg_func 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 vexpress_syscfg_func.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Yangtao Li <frank.li@vivo.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175234.work.134-kees@kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/vexpress-config.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/bus/vexpress-config.c b/drivers/bus/vexpress-config.c index c4e1becbb2d2..d2c7ada90186 100644 --- a/drivers/bus/vexpress-config.c +++ b/drivers/bus/vexpress-config.c @@ -54,7 +54,7 @@ struct vexpress_syscfg_func { struct vexpress_syscfg *syscfg; struct regmap *regmap; int num_templates; - u32 template[]; /* Keep it last! */ + u32 template[] __counted_by(num_templates); /* Keep it last! */ }; struct vexpress_config_bridge_ops { |