powerpc: Split memset() to avoid multi-field overflow

In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memset(), avoid intentionally writing across
neighboring fields.

Instead of writing across a field boundary with memset(), move the call
to just the array, and an explicit zeroing of the prior field.

Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Qinglang Miao <[email protected]>
Cc: "Gustavo A. R. Silva" <[email protected]>
Cc: Hulk Robot <[email protected]>
Cc: Wang Wensheng <[email protected]>
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/lkml/[email protected]

0 files changed, 0 insertions, 0 deletions