Linux kernel syscalls expect to be given the number of bits of sigset that
they're built for, not the full 1024-bit sigsets that glibc supports.
I audited the other syscalls in here that use `sigset_t` and they're all
using `NSIG / 8`.
Fixes #12715
991560fb49Pat Tullmann committed on 4/9/2025, 2:37:58 PM· committed by Alex Rønne Petersenparentf4e3631