r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000100)='net/igmp6\x00')
lseek(r0, 0x1000000, 0x0)
readv(r0, &(0x7f0000000140)=[{&(0x7f0000000000)=""/243, 0xf3}], 0x1)