[PATCH] Linux: Avoid calling malloc indirectly from __get_nprocs

[Richard W.M. Jones]

For context:
https://bugzilla.redhat.com/show_bug.cgi?id=1975693#c15

qemu uses a seccomp filter to block (probably incorrectly)
sched_getaffinity, so this system call fails.  Currently glibc
believes this means that the buffer is too small and doubles it until
it runs out of stack/memory and crashes.

A patch is going to be submitted to qemu to remove the seccomp filter
from this syscall, but it seems like glibc still shouldn't assume
sched_getaffinity is always callable.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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