95324dc3f4
Userspace may pass a negative ps_len value to us, which causes an assertion failure in malloc(). Treat negative values as zero, i.e. return the required size. Reported-by: syzbot+53370d9d0358ee2a059a@syzkaller.appspotmail.com Reviewed by: lutz at donnerhacke.de MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D24447