lib/string: fix memchr_inv() for large ranges

memchr_inv() takes a size_t length but counts 8 byte words in an unsigned
int.  At 32GiB that count wraps, so the scan can quietly miss most of the
range.

Use size_t for the word count.

Link: https://lore.kernel.org/20260621121133.16460-1-include@grrlz.net
Fixes: 798248206b59 ("lib/string.c: introduce memchr_inv()")
Signed-off-by: Bradley Morgan <include@grrlz.net>
Cc: Akinbou Mita <akinobu.mita@gmail.com>
Cc: Andy Shevchenko <andy@kernel.org>
Cc: Christoph Lameer <cl@linux-foundation.org>
Cc: Joern Engel <joern@logfs.org>
Cc: Kees Cook <kees@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

0 files changed, 0 insertions, 0 deletions