| Message ID | 20231009161028.it.544-kees@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] wifi: p54: Annotate struct p54_cal_database with __counted_by | expand |
Kees Cook <keescook@chromium.org> wrote: > 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 via CONFIG_UBSAN_BOUNDS (for > array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > Add __counted_by for struct p54_cal_database. > > Cc: Christian Lamparter <chunkeey@googlemail.com> > Cc: Kalle Valo <kvalo@kernel.org> > Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> > Cc: linux-wireless@vger.kernel.org > Cc: linux-hardening@vger.kernel.org > Suggested-by: Jason Andryuk <jandryuk@gmail.com> > Signed-off-by: Kees Cook <keescook@chromium.org> > Reviewed-by: Jason Andryuk <jandryuk@gmail.com> Patch applied to wireless-next.git, thanks. d9756ce618f3 wifi: p54: Annotate struct p54_cal_database with __counted_by
diff --git a/drivers/net/wireless/intersil/p54/p54.h b/drivers/net/wireless/intersil/p54/p54.h index 3356ea708d81..522656de4159 100644 --- a/drivers/net/wireless/intersil/p54/p54.h +++ b/drivers/net/wireless/intersil/p54/p54.h @@ -126,7 +126,7 @@ struct p54_cal_database { size_t entry_size; size_t offset; size_t len; - u8 data[]; + u8 data[] __counted_by(len); }; #define EEPROM_READBACK_LEN 0x3fc
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 via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). Add __counted_by for struct p54_cal_database. Cc: Christian Lamparter <chunkeey@googlemail.com> Cc: Kalle Valo <kvalo@kernel.org> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: linux-wireless@vger.kernel.org Cc: linux-hardening@vger.kernel.org Suggested-by: Jason Andryuk <jandryuk@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> --- v1 - https://lore.kernel.org/all/20231006201719.work.356-kees@kernel.org/ v2 - use the correct member (jandryuk) --- drivers/net/wireless/intersil/p54/p54.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)