On Tue, 2020-12-01 at 10:05 -0600, Justin Forbes wrote:
On Tue, Dec 1, 2020 at 7:57 AM Veronika Kabatova
<vkabatov(a)redhat.com
> wrote:
>
>
> ----- Original Message -----
> > From: "Sérgio Basto" <sergio(a)serjux.com>
> > To: "Veronika Kabatova" <vkabatov(a)redhat.com>, "Kernel
Fedora" <
> > kernel(a)lists.fedoraproject.org>
> > Sent: Monday, November 30, 2020 3:59:42 PM
> > Subject: Re: scripts/basic/fixdep: /lib64/libc.so.6: version
> > `GLIBC_2.33' not found (required by
> > scripts/basic/fixdep)
> >
> > On Mon, 2020-11-30 at 07:46 -0500, Veronika Kabatova wrote:
> > > ----- Original Message -----
> > > > From: "Sérgio Basto" <sergio(a)serjux.com>
> > > > To: "Kernel Fedora" <kernel(a)lists.fedoraproject.org>
> > > > Sent: Monday, November 23, 2020 12:22:12 AM
> > > > Subject: scripts/basic/fixdep: /lib64/libc.so.6: version
> > > > `GLIBC_2.33' not found (required by scripts/basic/fixdep)
> > > >
> > > > Hello,
> > > >
> > > > with kernels from fedora-rawhide-kernel-nodebug
> > > > [1]compilation of
> > > > kmods
> > > > started fail because [2] , how we can fix this issue ?
> > > >
> > > >
> > > > Thanks
> > > >
> > > >
> > > > [1]
> > > > dnf --enablerepo=fedora-rawhide-kernel-nodebug update
> > > >
> > > > [2]
> > > > scripts/basic/fixdep: /lib64/libc.so.6: version `GLIBC_2.33'
> > > > not
> > > > found
> > > > (required by scripts/basic/fixdep)
> > > >
> > >
> > > Hi,
> > >
> > > we're seeing a similar issue with upstream kernels built on
> > > rawhide
> > > for the past ~week.
> > >
> > > Specifically in our case we're compiling bpf-next tree (though
> > > based
> > > on the message I'm replying to it doesn't matter). The kernel
> > > is then
> > > installed on Fedora 33 with an attempt to rebuild some modules
> > > which
> > > fails with
> > >
> > > /usr/src/kernels/5.10.0-rc3/tools/objtool//fixdep:
> > > /lib64/libc.so.6:
> > > version `GLIBC_2.33' not found (required by
> > > /usr/src/kernels/5.10.0-rc3/tools/objtool//fixdep)
> > >
> > > This is on x86_64.
> > >
> > > Did anyone manage to find out what what's causing this? Is it a
> > > mismatch of versions between rawhide and fc33 that's not
> > > expected to
> > > work? @Sérgio are you also using the kernels with fc33 or
> > > purely
> > > rawhide?
A mismatch of modules is definitely expected not to work. Fedora runs
without CONFIG_MODVERSIONS because we do not in any way promise KABI.
Because of this, if you want to run a module, it must be built with
the same compiler/environment that the kernel you wish to insert it
into is built. If you need out of tree modules, rawhide/nodebug
kernels will need to be run in rawhide, or rebuilt against the
version
of Fedora you wish to run it on.
I think [1] make it work , the problem is these binaries (fixdep,
objtool and modpost) that are compiled in rawhide with a new glibc
...
[1]
cp /usr/src/kernels/5.9.9-100.fc32.x86_64/scripts/basic/fixdep
/usr/src/kernels/5.10.0-0.rc6.90.fc34.x86_64/scripts/basic/
cp /usr/src/kernels/5.9.9-100.fc32.x86_64/tools/objtool/objtool
/usr/src/kernels/5.10.0-0.rc6.90.fc34.x86_64/tools/objtool/
cp /usr/src/kernels/5.9.9-100.fc32.x86_64/scripts/mod/modpost
/usr/src/kernels/5.10.0-0.rc6.90.fc34.x86_64/scripts/mod/
> > Sometimes when I want test builds of kernel modules (with
akmods
> > of
> > RPMFusion), I install kernels from fedora-rawhide-kernel-nodebug
> > or kernel-stabilization .
> > I workaround it, by building the kernels that I want to test on
> > copr
> > [1] for that I download src.rpm from koji .
> >
>
> Thanks for the update! Unfortunately building in copr doesn't work
> for us.
>
> ccing Don and Justin, have you ever run into this issue with
> building on rawhide?
>
I have not seen any issues, though I don't build any out of tree
modules either.
Justin
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Sérgio M. B.