r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000000)='net/igmp\x00')
readv(r0, &(0x7f0000001780)=[{&(0x7f0000000280)=""/78, 0x3c}, {&(0x7f0000000300)=""/66, 0x42}, {&(0x7f00000003c0)=""/215, 0xd7}, {&(0x7f00000004c0)=""/4096, 0x1000}], 0x4)