apt install of s390-tools-zkey triggers kernel user process fault

[John George]

ubuntu@s5lp8:~$ lsb_release -rd
Description: Ubuntu Disco Dingo (development branch)
Release: 19.04

ubuntu@s5lp8:~$ apt-cache policy s390-tools-zkey
s390-tools-zkey:
  Installed: 2.8.0-0ubuntu5
  Candidate: 2.8.0-0ubuntu5
  Version table:
 *** 2.8.0-0ubuntu5 500
        500 http://us.ports.ubuntu.com/ubuntu-ports disco/main s390x Packages
        100 /var/lib/dpkg/status

apt-get install of the s390-tools-zkey package triggers kernel User process fault, seen in syslog

The exact command run was:
sudo apt-get --quiet -o Debug::pkgProblemResolver=true -o APT::Get::force-yes=true -o APT::Get::force-yes=true -o APT::Get::Assume-Yes=true --reinstall install s390-tools-zkey

Below is the first fault from syslog. Please see the attached sosreport for more detail.

Apr 9 13:30:02 s5lp8 kernel: [72730.668143] User process fault: interruption code 0010 ilc:2 in ld-2.29.so[7d274000+1f000]
Apr 9 13:30:02 s5lp8 kernel: [72730.668153] Failing address: 0000000000000000 TEID: 0000000000000800
Apr 9 13:30:02 s5lp8 kernel: [72730.668154] Fault in primary space mode while using user ASCE.
Apr 9 13:30:02 s5lp8 kernel: [72730.668157] AS:00000001dca281c3 S:0000000000000020
Apr 9 13:30:02 s5lp8 kernel: [72730.668162] CPU: 1 PID: 63683 Comm: ld.so.1 Tainted: P O 5.0.0-8-generic #9-Ubuntu
Apr 9 13:30:02 s5lp8 kernel: [72730.668163] Hardware name: IBM 2964 N63 400 (LPAR)
Apr 9 13:30:02 s5lp8 kernel: [72730.668165] User PSW : 0705000080000000 000000007d2757da
Apr 9 13:30:02 s5lp8 kernel: [72730.668166] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:1 AS:0 CC:0 PM:0 RI:0 EA:1
Apr 9 13:30:02 s5lp8 kernel: [72730.668168] User GPRS: 000002aa70000022 000003ff00000000 0000000000000000 000002aa00000000
Apr 9 13:30:02 s5lp8 kernel: [72730.668169] 000002aa00000000 000000006fffffff ffffffff0000000a 000002aa7d274000
Apr 9 13:30:02 s5lp8 kernel: [72730.668170] 000002aa7d295020 0000000000000000 000002aa6ffffdff 000002aa7d295624
Apr 9 13:30:02 s5lp8 kernel: [72730.668170] 000003ff7d294fbc 000002aa7d28b388 000000003d29525c 000000007fcce4a0
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] User Code: 000000007d2757d0: 1a32 ar %r3,%r2
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] 000000007d2757d2: 5030f060 st %r3,96(%r15)
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] #000000007d2757d6: 58208550 l %r2,1360(%r8)
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] >000000007d2757da: 58202004 l %r2,4(%r2)
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] 000000007d2757de: 5020f064 st %r2,100(%r15)
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] 000000007d2757e2: 1591 clr %r9,%r1
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] 000000007d2757e4: a7c4000e brc 12,7d275800
Apr 9 13:30:02 s5lp8 kernel: [72730.668179] 000000007d2757e8: 58201000 l %r2,0(%r1)
Apr 9 13:30:02 s5lp8 kernel: [72730.668190] Last Breaking-Event-Address:
Apr 9 13:30:02 s5lp8 kernel: [72730.668194] [<000000007d2757b0>] 0x7d2757b0

[Frank Heimes (fheimes)]

I can see some similar faults on other systems running disco, too.
Like:
[81472.444411] User process fault: interruption code 0010 ilc:2 in ld-2.29.so[7d112000+1f000]
or:
[ 3820.406468] User process fault: interruption code 0006 ilc:2 in curl[2aa16c80000+35000]
but not on all LPARs with disco (even if s390-tools-zkey is installed everywhere).

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2019-04-11 04:22 EDT-------
I don't see from the material which program actually crashes. I don't think that zkey is actually executed during installation of the package. If it is not executed, then it can't crash.... So what is actually crashing here? Is apt-get crashing?
I don't really see the relation to zkey yet....

[John George (jog)]

I was unable to reproduce the process faults after reinstalling the released version of 19.04.

[Frank Heimes (fheimes)]

Closing bug according to comment #4.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2019-04-29 02:37 EDT-------
IBM Bugzilla status -> closed, Problem not reproducable with 19.40 GA..