[Bug 1547152] patch allowing loop or breakpoint disabling failure

[bugproxy]

------- Comment (attachment only) From thierry.fauck at fr.ibm.com 2016-03-22 10:25 EDT-------


** Attachment added: "patch allowing loop or breakpoint disabling failure"
   https://bugs.launchpad.net/bugs/1547152/+attachment/4607526/+files/ltrace-135982.diff

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https://bugs.launchpad.net/bugs/1547152

Title:
  ltrace is throwing segfault while running any of the userspace command

Status in procps package in Ubuntu:
  Incomplete

Bug description:
  == Comment: #0 - Praveen K. Pandey <Praveen.Pandey at in.ibm.com> - 2016-01-25 01:18:25 ==
  Hi ,

     I Installed Ubuntu16.04 In PowerNV and try to run ltrace ls or
  ltrace ps it will fail with segfault .

  
  Reproducible Step :

  1- Install Ubuntu16.04 in PowerNV or as KVM or as PowerVM
  2- Install ltrace  package
  3- Try to run ltrace with any userspace utility like "ltrace ps"

  Actual Result :

  Throw Seg fault

  Expected :

  LOG

  root at lep8d:~# uname -a
  Linux lep8d 4.3.0-7-generic #18-Ubuntu SMP Tue Jan 19 15:47:35 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux
  root at lep8d:~#

  
  root at lep8d:~# ltrace ps
  __printf_chk(1, 0x3fffe4d40028, 0x3fffe4d40038, 0x3fffe4d400e0 <unfinished ...>
  qsort(0x10017850, 0, 0, 0x3fffe4d400e0)                                                                      = <void>
  __gmon_start__(0x3fffe4d4f8df, 47, 0, 0x3fff81c51d68)                                                        = 0
  ferror(0x6)                                                                                                  = 230428656
  __libc_start_main(0x10017e10, 0x10017df8, 0x3fff81d68f48, 0x3fff81d68f38)                                    = 0x3fff81c1ccb0
  readproctab3(0x10017e10, 24, 0x7000000000000000, 0x6c00000000000000)                                         = 0x1000dbc1040
  uptime(0x3fffe4d3faf0, 0, 152, 103)                                                                          = 0x3fffe4d3faf0
  __fpending(0x3fffe4d3faf8, 0, 152, 103)                                                                      = 0
  strrchr("\037 !"#$%&'()*+,-./0123456789:;<=>"..., '\360')                                                    = nil
  escape_command(0x10030f50, 0x3fffe4d3f968, 0, 8)                                                             = 0
  setlocale(LC_NUMERIC, "hijklmnopqrstuvwxyz{|}~\177\200\201\202\203\204\205\206\207"...)                      = nil
  select(1, 0x40087468, 0x3fffe4d3fa00, 0)                                                                     = 1
  __xstat(268534584, "\017", 0x13)                                                                             = 0
  strncmp("", "unknown", 7)                                                                                    = -455870136
  sigfillset(~<1,3,7-8,12,15,18,20,23-24,28,31,36,39,43,47-48,52,55-63>)                                       = 230428768
  getpagesize()                                                                                                = 6
  meminfo(0, 0x100182d0, 0, 0)                                                                                 = 0
  getpagesize( <unfinished ...>
  __stack_chk_fail(0, 0x100182d0, 0, 0 <no return ...>
  --- SIGSEGV (Segmentation fault) ---
  strncpy(0, "Signa", 5)                                                                                       = 0x10017da8
  dlerror()                                                                                                    = "SEGV"
  strcmp("\206 \255\373", "\001\002\003\004\005\006\a\b\t\n\v\f\r\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037 "...Signal 11 (SEGV) caught by ps (procps-ng version 3.3.10).
  ) = 58
  readtask(0, 0, 0x10017de8, 66ps:display.c:66: please report this bug
  )                                                                               = 0
  __snprintf_chk(11, 0, 0x3fff81c5175b, 0)                                                                     = 0x10003e90
  time(0x10003e90)                                                                                             = 30039
  fork()                                                                                                       = 0
  unexpected breakpoint at 0x3fff81b339a4
  --- SIGSEGV (Segmentation fault) ---
  +++ killed by SIGSEGV +++
  root at lep8d:~#

  
  == Comment: #7 - Thierry Fauck <thierry.fauck at fr.ibm.com> - 2016-02-17 14:11:52 ==
  The problem is related to procps-ng 3.3.10
  Upgrade to procps-ng 3.3.11 solves the issue
  Going to Mirror and ask Canonical to advise.

  == Comment: #9 - Thierry Fauck <thierry.fauck at fr.ibm.com> - 2016-02-17 14:13:10 ==
  This bugs is linked to procps-ng 3.3.10 known as having some issues. Is upgrade to 3.3.11 an option ?

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