openat$procfs(0xffffffffffffff9c, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000040)='mountinfo\x00')
sendfile(r0, r1, &(0x7f0000000180)=0x10001, 0x7)
preadv(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0)