Fwd: [core-updates] libaio test fails on powerpc64le-linux due to kernel bug

[Thiago Jung Bauermann]

Hello,

I sent the email below as a bug report, but I should probably have sent
it to guix-devel instead.

The gist of it is that libaio on core-updates doesn't build on guixp9
because its testsuite (intentionally) catches a kernel bug.

I can do an “apt-get update && apt-get upgrade” to fix the problem but
since I don't have console access to the VM I'd need someone else to
reboot it just in case it doesn't come back on its own...

-- 
Thanks
Thiago


Thiago Jung Bauermann <bauermann@kolabnow.com> writes:

> On the core-updates branch, libaio has been updated to version 0.3.113.
> This version contains a new test which fails on guixp9 (one of the
> powerpc64le-linux builders) due to a bug present in the kernel it is
> running:
>
> Starting cases/23.p
> FAIL: poll missed an event!
> FAIL: poll missed an event!
> FAIL: poll missed an event!
> test cases/23.t completed FAILED.
> Completed cases/23.p with 1 -- FAILED.
> Pass: 18  Fail: 1  Skip: 0
> Test run complete at Sun Jul 17 10:39:33 AM UTC 2022
> make[1]: *** [Makefile:53: partcheck] Error 1
> make[1]: Leaving directory 
> '/tmp/guix-build-libaio-0.3.113.drv-0/libaio-0.3.113/harness'
> make: *** [Makefile:23: partcheck] Error 2
>
> Test suite failed, dumping logs.
> error: in phase 'check': uncaught exception:
> %exception #<&invoke-error program: "make" arguments: ("partcheck" "-j" "8" 
> "prefix=/gnu/store/igbnjwlfr0mim89if6z46cqba0ny5lww-libaio-0.3.113" "CC=gcc") 
> exit-status: 2 term-signal: #f stop-signal: #f>
> phase `check' failed after 97.9 seconds
> command "make" "partcheck" "-j" "8" 
> "prefix=/gnu/store/igbnjwlfr0mim89if6z46cqba0ny5lww-libaio-0.3.113" "CC=gcc" 
> failed with status 2
>
> The header of libaio/harness/cases/23.t says:
>
>  * Verify that aio poll doesn't miss any events.  This is a regression test 
> for
>  * kernel commit 363bee27e258 ("aio: keep poll requests on waitqueue until
>  * completed")¹.
>
> guixp9 is running kernel linux-image-5.10.0-0.bpo.8-powerpc64le version
> 5.10.46-4~bpo10+1. The kernel commit mentioned above was backported to
> upstream stable kernel 5.10.85, which was included in Debian's
> linux-image version 5.10.92-1, available in the buster-backports kernel.
>
> So long story short, we need to update guixp9's kernel so that we can
> build core-update's libaio. I suggest we take the opportunity to update
> all of the Debian packages as well.
>
> I don't have access to guixp9's console, so unfortunately I can't
> perform the update. Or rather, I can if someone else reboots the machine
> afterwards and fixes any boot issues that could come up (hopefully not
> but it's always a possibility).