[Bug 1818953] Re: Perl core dumping core on UBUNTU 19.04 by executing perl script

[Dimitri John Ledkov]

ubuntu at baltar:~$ lscpu 
Architecture:        ppc64le
Byte Order:          Little Endian
CPU(s):              160
On-line CPU(s) list: 0-159
Thread(s) per core:  4
Core(s) per socket:  20
Socket(s):           2
NUMA node(s):        2
Model:               2.2 (pvr 004e 1202)
Model name:          POWER9, altivec supported
CPU max MHz:         3800.0000
CPU min MHz:         2166.0000
L1d cache:           32K
L1i cache:           32K
L2 cache:            512K
L3 cache:            10240K
NUMA node0 CPU(s):   0-79
NUMA node8 CPU(s):   80-159
ubuntu at baltar:~$ cat test.pl 
#!//usr/bin/perl

use POSIX qw(mblen);

my $str = "data";

print "Calling mblen with str=$str\n";
my $len = mblen($str, MB_CUR_MAX);
print "mblen returned with len=$len\n";

ubuntu at baltar:~$ ./test.pl 
Calling mblen with str=data
mblen returned with len=-2


Not sure if the result of "-2" is expected, or not. From my expectations of what mblen() is supposed to do, that's a wrong answer....
And that was POWER9, will redo on POWER8 now.

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https://bugs.launchpad.net/bugs/1818953

Title:
  Perl core dumping core on UBUNTU 19.04 by executing perl script

Status in The Ubuntu-power-systems project:
  Incomplete
Status in perl package in Ubuntu:
  Incomplete

Bug description:
  == Comment: #0 - NAGENDRA P. DONTAMSETTY <ndontams at in.ibm.com> - 2019-02-28 00:14:49 ==
  ---Problem Description---
  Perl core dumping core on UBUNTU 19.04 by executing perl script
   
  ---uname output---
  root at p8ct1p13:/tmp# uname -a Linux p8ct1p13.in.ibm.com 4.19.0-13-generic #14-Ubuntu SMP Thu Feb 7 21:50:00 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = ppc64le and power8 
   
  ---Debugger Data---
  root at p8ct1p13:/tmp# file core
  core: ELF 64-bit LSB core file, 64-bit PowerPC or cisco 7500, version 1 (SYSV), SVR4-style, from '/usr/bin/perl /usr/bin/mkrsrc IBM.Ray Name=fvt1 NodeNameList={p8ct1p09.in.ibm.c', real uid: 0, effective uid: 0, real gid: 0, effective gid: 0, execfn: '/usr/bin/mkrsrc', platform: 'power8'
   
   
  ---Steps to Reproduce---
   Description:  Perl core dumpinmg core on UBUNTU 19.04 by exec cmd "mkrsrc"

  
  root at p8ct1p13:/tmp# uname -a
  Linux p8ct1p13.in.ibm.com 4.19.0-13-generic #14-Ubuntu SMP Thu Feb 7 21:50:00 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux

  
  root at p8ct1p13:~# cat /etc/os-release
  NAME="Ubuntu"
  VERSION="19.04 (Disco Dingo)"
  ID=ubuntu
  ID_LIKE=debian
  PRETTY_NAME="Ubuntu Disco Dingo (development branch)"
  VERSION_ID="19.04"
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  VERSION_CODENAME=disco
  UBUNTU_CODENAME=disco

  
  root at p8ct1p13:~# ctversion -bv
  RSCT_Build_Name=rsholxs002a 3.2.4.2 RSCT_Build_Time=19043.16:11:49 RSCT_Build_Context=ppc64le_linux_2

  
  root at p8ct1p13:/tmp# mkrsrc IBM.Ray Name="fvt1" NodeNameList={"p8ct1p09.in.ibm.com"} ManualMode=0 Int32=00 String="Initial Test String 2"
  perl: mbrtowc.c:105: __mbrtowc: Assertion `__mbsinit (data.__statep)' failed.
  Aborted (core dumped)

  root at p8ct1p13:/tmp# file core
  core: ELF 64-bit LSB core file, 64-bit PowerPC or cisco 7500, version 1 (SYSV), SVR4-style, from '/usr/bin/perl /usr/bin/mkrsrc IBM.Ray Name=fvt1 NodeNameList={p8ct1p09.in.ibm.c', real uid: 0, effective uid: 0, real gid: 0, effective gid: 0, execfn: '/usr/bin/mkrsrc', platform: 'power8'

  
  root at p8ct1p13:/tmp# which mkrsrc
  /usr/bin/mkrsrc

  root at p8ct1p13:/tmp# file /usr/bin/mkrsrc

  /usr/bin/mkrsrc: symbolic link to /opt/rsct/bin/mkrsrc

  root at p8ct1p13:/tmp# file /opt/rsct/bin/mkrsrc
  /opt/rsct/bin/mkrsrc: Perl script text executable
   
  Contact Information = Nagendra Dontamsetty/ndontams at in.ibm.com, Anirban/anirbank at in.ibm.com 
   
  Userspace tool common name: perl 5 
   
  The userspace tool has the following bit modes: 64bit 

  Userspace rpm: ii  perl                                  5.28.1-4
  ppc64el

  Userspace tool obtained from project website:  na 
   
  *Additional Instructions for Nagendra Dontamsetty/ndontams at in.ibm.com, Anirban/anirbank at in.ibm.com: 
  -Post a private note with access information to the machine that is currently in the debugger.
  -Attach ltrace and strace of userspace application.

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