r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000000)='net/ip6_flowlabel\x00')
preadv(r0, &(0x7f0000001380)=[{&(0x7f0000000080)=""/134, 0x86}], 0x1, 0x4c, 0x0)