r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/pids.max\x00', 0x2, 0x0)
syz_io_uring_setup(0x55f1, &(0x7f0000000080), &(0x7f0000ffd000/0x2000)=nil, &(0x7f00000b0000)=nil, &(0x7f0000000180), &(0x7f0000000040)=<r1=>0x0)
write$tun(r0, &(0x7f0000000140)=ANY=[@ANYRESOCT=r1], 0x42)