sched_setaffinity(0x0, 0x0, 0x0)
openat$procfs(0xffffffffffffff9c, &(0x7f0000000140)='/proc/keys\x00', 0x0, 0x0)
r0 = syz_open_dev$tty20(0xc, 0x4, 0x1)
sendfile(r0, 0xffffffffffffffff, 0x0, 0x0)
ioctl$KDSETMODE(r0, 0x4b3a, 0x0)