diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:53:38 -0700 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-11-01 10:02:12 +0000 |
| commit | 69c3f9154553c22066108427eb24d94f1645551b (patch) | |
| tree | 7661cb79717faad82322649b47559aa0b702ac22 /drivers/mfd | |
| parent | 1c7ea43fc42b09080657c83683846c4be672bd91 (diff) | |
mfd: iqs62x: Annotate struct iqs62x_fw_blk 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 iqs62x_fw_blk.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175337.work.150-kees@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/iqs62x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/iqs62x.c b/drivers/mfd/iqs62x.c index e03b4d38fbb0..1b465590567c 100644 --- a/drivers/mfd/iqs62x.c +++ b/drivers/mfd/iqs62x.c @@ -96,7 +96,7 @@ struct iqs62x_fw_blk { u8 addr; u8 mask; u8 len; - u8 data[]; + u8 data[] __counted_by(len); }; struct iqs62x_info { |