r0 = syz_io_uring_setup(0x3a7b, &(0x7f0000000480), &(0x7f0000ffa000/0x4000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f00000001c0)=<r1=>0x0, &(0x7f0000000080)=<r2=>0x0)
syz_io_uring_submit(r1, r2, &(0x7f0000000180)=@IORING_OP_READ=@use_registered_buffer={0x16, 0x0, 0x0, @fd_index}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000480)={<r3=>0xffffffffffffffff})
syz_io_uring_submit(r1, r2, &(0x7f0000000000)=@IORING_OP_SENDMSG={0x9, 0x4, 0x0, r3, 0x0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000001ac0)=[{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}], 0x9, &(0x7f0000001e00)=[{0x10, 0x1}], 0x10}}, 0x0)
io_uring_enter(r0, 0x58ab, 0x0, 0x0, 0x0, 0x0)