r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
fsetxattr(r0, &(0x7f0000000040)=@random={'user.', '\']\\]\x00'}, 0x0, 0x0, 0x0)
fremovexattr(r0, &(0x7f0000000280)=@known='user.syz\x00')