Re: [next] arm64: boot failed - next-20220606

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On Tue, 7 Jun 2022 at 19:47, Shakeel Butt <shakeelb@xxxxxxxxxx> wrote:
>
> On Tue, Jun 7, 2022 at 3:28 AM Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote:
> >
> > Hi Shakeel,
> >
> > > > > Can you test v5.19-rc1, please?  If that does not fail, then you could
> > > > > bisect between that and next-20220606 ...
> > > > >
> > > >
> > > > This is already reported at
> > > > https://lore.kernel.org/all/Yp4F6n2Ie32re7Ed@qian/ and I think we know
> > > > the underlying issue (which is calling virt_to_page() on a vmalloc
> > > > address).
> > >
> > > Sorry, I might be wrong. Just checked the stacktrace again and it
> > > seems like the failure is happening in early boot in this report.
> > > Though the error "Unable to handle kernel paging request at virtual
> > > address" is happening in the function mem_cgroup_from_obj().
> > >
> > > Naresh, can you repro the issue if you revert the patch "net: set
> > > proper memcg for net_init hooks allocations"?
> >
> > yes. You are right !
> > 19ee3818b7c6 ("net: set proper memcg for net_init hooks allocations")
> > After reverting this single commit I am able to boot arm64 successfully.
> >
> > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
> >
>
> Can you please run script/faddr2line on "mem_cgroup_from_obj+0x2c/0x120"?

./scripts/faddr2line vmlinux  mem_cgroup_from_obj+0x2c/0x120
mem_cgroup_from_obj+0x2c/0x120:
mem_cgroup_from_obj at ??:?

Please find the following artifacts which are causing kernel crashes.

vmlinux: https://builds.tuxbuild.com/2ABl8X9kHAAU5MlL3E3xExHFrNy/vmlinux.xz
System.map: https://builds.tuxbuild.com/2ABl8X9kHAAU5MlL3E3xExHFrNy/System.map


- Naresh



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