r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000000)='net/ipv6_route\x00')
preadv(r0, &(0x7f00000008c0)=[{&(0x7f0000000180)=""/161, 0xa1}, {&(0x7f0000000240)=""/31, 0x1f}, {&(0x7f0000000280)=""/175, 0xaf}, {&(0x7f0000000340)=""/229, 0xe5}, {&(0x7f0000000500)=""/173, 0xad}, {&(0x7f00000005c0)=""/215, 0xd7}], 0x6, 0x0, 0x0)