Bug#1122038: libc6-dev: symbols not covering GLIBC_ABI_GNU_TLS on i386
control: severity -1 important
On 2025-12-06 19:58, Adrian Bunk wrote:
> On Sat, Dec 06, 2025 at 05:51:51PM +0100, Aurelien Jarno wrote:
> > Hi,
> >
> > On 2025-12-06 14:59, Samuel Thibault wrote:
> > > Samuel Thibault, le sam. 06 déc. 2025 14:53:44 +0100, a ecrit:
> > > > Adrian Bunk, le sam. 06 déc. 2025 07:22:50 +0200, a ecrit:
> > > > > https://ci.debian.net/packages/s/starpu/testing/i386/66851610/
> > > > >
> > > > > ...
> > > > > 45s starpu_machine_display: /lib/i386-linux-gnu/libc.so.6: version `GLIBC_ABI_GNU_TLS' not found (required by starpu_machine_display)
> > > > > ...
> > > > >
> > > > >
> > > > > This can be reproduced with starpu-tools/unstable and libc6/forky:
> > > > >
> > > > > $ starpu_machine_display
> > > > > starpu_machine_display: /lib/i386-linux-gnu/libc.so.6: version `GLIBC_ABI_GNU_TLS' not found (required by starpu_machine_display)
> > > >
> > > > And more generally, a mere program int main(void) {} compiled with
> > > > unstable gets this error in forky. Libraries are not affected.
> > >
> > > (for the background, this symbol is apparently on purpose on i386:
> > > https://sourceware.org/git/?p=glibc.git;a=commit;h=ed1b7a5a489ab555a27fad9c101ebe2e1c1ba881
> > > https://sourceware.org/bugzilla/show_bug.cgi?id=32996 )
> >
> > Yes. And the symbol is actually correctly covered in the symbols file.
> > But it is exported as part of the .gnu.version_r section, which is not
> > checked by dpkg-gensymbols.
> >
> > At this stage, I do not have more idea than forcing the minimum version
> > to 2.42 on i386. That will be for all binaries, not the ones actually
> > needing that (e.g. libraries).
>
> Urgent is to get a fixed/workarounded glibc before the chroot rebuilds
> tomorrow evening, package builds updating libc6 are rare and so far only
> a dozen packages are affected but staring Monday the binNMU list would
> become huge.
I have just uploaded glibc 2.42-5 with a workaround, so downgrading the
severity.
Regards
Aurelien
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
aurelien@aurel32.net http://aurel32.net
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