prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x0, &(0x7f0000000200))
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='net/route\x00')
preadv(r0, 0x0, 0x0, 0x0, 0x0)