r0 = syz_open_procfs(0x0, &(0x7f0000000080)='net/ip6_flowlabel\x00')
preadv(r0, &(0x7f0000000240)=[{&(0x7f0000000180)=""/155, 0x9b}], 0x1, 0x5545, 0x0)