FATAL error after upgrade glibc for linux emulation

[Chuck Tuffli]

On Mon, Dec 17, 2018 at 8:20 PM <Weike.Chen at dell.com> wrote:
>
> Dell - Internal Use - Confidential
>
> Hi Linux emulation experts,
>
> I installed 'linux_base-c7' on freeBSD12, and its glibc version is '2.17', but I have a linux application, it is depended on glibc-2.27.
> So I upgrade the glibc in /compat/linux to '2.27', (I just copy glibc 2.27 from Ubuntu 18.04 to 'compat/linux/lib64':
> ld-2.27.so
> libc-2.27.so
> libdl-2.27.so
> librt-2.27.so
>
> Then I run my application, it is reported the error:
> FATAL: kernel too old.
>
> Then I run a simple help world (only print a message), it can work before my glibc upgrading, but now get the same error.
>
> Anything I missed?

Can you tell if a call to
    setsockopt(..., IP_RECVERR)
is failing?

--chuck