32bit glibc 2.30 and kernel 4.9.259: FATAL: kernel too old

32bit glibc 2.30 and kernel 4.9.259: FATAL: kernel too old

[Michael Brunnbauer]

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hi all,

I still have a 32bit glibc 2.30 lying around to run older programs that I
did not get around to recompile. After upgrading from Kernel 4.9.255 to
4.9.259, they all fail with "FATAL: kernel too old". This seems to be a
message from the loader.

The suspicion offers itself that this is because the revision/patch number
cannot be represented with a byte any more.

Any idea what's going on and how to fix it?

Regards,

Michael Brunnbauer

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++  Michael Brunnbauer
++  netEstate GmbH
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Re: 32bit glibc 2.30 and kernel 4.9.259: FATAL: kernel too old

[Florian Weimer]

* Michael Brunnbauer:

> I still have a 32bit glibc 2.30 lying around to run older programs that I
> did not get around to recompile. After upgrading from Kernel 4.9.255 to
> 4.9.259, they all fail with "FATAL: kernel too old". This seems to be a
> message from the loader.
>
> The suspicion offers itself that this is because the revision/patch number
> cannot be represented with a byte any more.
>
> Any idea what's going on and how to fix it?

How has this particular glibc been built?

Thanks,
Florian

Re: 32bit glibc 2.30 and kernel 4.9.259: FATAL: kernel too old

[Michael Brunnbauer]

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Hallo Florian,

On Thu, Mar 04, 2021 at 04:03:03PM +0100, Florian Weimer wrote:
> How has this particular glibc been built?

On 2019-10-30 apparently with gcc 7.3.0 and binutils 2.33.1 using:

mkdir compile
cd compile
echo "CFLAGS += -march=i686" > configparms
../configure --prefix=/usr --enable-kernel=4.9.190 --host=i686-pc-linux-gnu --disable-experimental-malloc

/usr/include/linux/version.h is:
#define LINUX_VERSION_CODE 264643
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))

It seems the headers from Kernel 4.9.195 were installed.

Regards,

Michael Brunnbaur

-- 
++  Michael Brunnbauer
++  netEstate GmbH
++  Geisenhausener Straße 11a
++  81379 München
++  Tel +49 89 32 19 77 80
++  Fax +49 89 32 19 77 89 
++  E-Mail brunni@netestate.de
++  https://www.netestate.de/
++
++  Sitz: München, HRB Nr.142452 (Handelsregister B München)
++  USt-IdNr. DE221033342
++  Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer
++  Prokurist: Dipl. Kfm. (Univ.) Markus Hendel

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Re: 32bit glibc 2.30 and kernel 4.9.259: FATAL: kernel too old

[Florian Weimer]

* Michael Brunnbauer:

> Hallo Florian,
>
> On Thu, Mar 04, 2021 at 04:03:03PM +0100, Florian Weimer wrote:
>> How has this particular glibc been built?
>
> On 2019-10-30 apparently with gcc 7.3.0 and binutils 2.33.1 using:
>
> mkdir compile
> cd compile
> echo "CFLAGS += -march=i686" > configparms
> ../configure --prefix=/usr --enable-kernel=4.9.190 --host=i686-pc-linux-gnu --disable-experimental-malloc
>
> /usr/include/linux/version.h is:
> #define LINUX_VERSION_CODE 264643
> #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
>
> It seems the headers from Kernel 4.9.195 were installed.

Just build with --enable-kernel=4.9.0, then the issue should go away.

Thanks,
Florian