r0 = syz_io_uring_setup(0x620e, &(0x7f0000000180), &(0x7f0000ffb000/0x3000)=nil, &(0x7f0000ffc000/0x1000)=nil, &(0x7f0000000100)=<r1=>0x0, &(0x7f0000000140)=<r2=>0x0)
r3 = syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
syz_io_uring_submit(r1, r2, &(0x7f0000000000)=@IORING_OP_SENDMSG={0x9, 0x0, 0x0, r3, 0x0, &(0x7f0000000900)={&(0x7f0000000200)=@l2tp6={0xa, 0x0, 0x0, @mcast2}, 0x80, 0x0}}, 0x0)
openat$procfs(0xffffffffffffff9c, &(0x7f0000000200)='/proc/sysvipc/sem\x00', 0x0, 0x0)
io_uring_enter(r0, 0x58ab, 0x0, 0x0, 0x0, 0x0)