r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f00000002c0)='net/ip_mr_vif\x00')
preadv(r0, &(0x7f0000000200)=[{&(0x7f0000000000)=""/179, 0xb3}], 0x1, 0x0, 0x0)