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[Bug 1509589] [NEW] rsyslog crash on startup (segmentation violation due to NULL-pointer)

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: halfdog <me@xxxxxxxxxxx>
Date: Sat, 24 Oct 2015 02:31:44 -0000
Reply-to: Bug 1509589 <1509589@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

rsyslog won't start on fresh install of Ubuntu Wily

Starting program: /usr/sbin/rsyslogd -n
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x0000000000436400 in ?? ()
(gdb) bt
#0  0x0000000000436400 in ?? ()
#1  0x0000000000419605 in MsgSetRcvFrom ()
#2  0x0000000000445b24 in logmsgInternal ()
#3  0x00000000004223e6 in ?? ()
#4  0x00000000004225b7 in ?? ()
#5  0x0000000000438c68 in processCfSysLineCommand ()
#6  0x0000000000411014 in cfsysline ()
#7  0x000000000041469c in cnfDoCfsysline ()
#8  0x00000000004546f0 in yylex ()
#9  0x0000000000451463 in yyparse ()
#10 0x0000000000412ef7 in ?? ()
#11 0x0000000000413ef4 in load ()
#12 0x00000000004464d7 in initAll ()
#13 0x000000000040d990 in main ()

(gdb) disassemble $rip-0x20,$rip+0x40
Dump of assembler code from 0x4363e0 to 0x436440:
   0x00000000004363e0 <propDebugPrint+0>:       mov    %rdi,%rsi
   0x00000000004363e3 <propDebugPrint+3>:       lea    0x312e6(%rip),%rdi        # 0x4676d0
   0x00000000004363ea <propDebugPrint+10>:      sub    $0x8,%rsp
   0x00000000004363ee <propDebugPrint+14>:      xor    %eax,%eax
   0x00000000004363f0 <propDebugPrint+16>:      callq  0x422ff0 <dbgprintf>
   0x00000000004363f5 <propDebugPrint+21>:      xor    %eax,%eax
   0x00000000004363f7 <propDebugPrint+23>:      add    $0x8,%rsp
   0x00000000004363fb <propDebugPrint+27>:      retq   
   0x00000000004363fc:  nopl   0x0(%rax)
=> 0x0000000000436400:  lock addl $0x1,0x10(%rdi)
   0x0000000000436405:  xor    %eax,%eax
   0x0000000000436407:  retq   
   0x0000000000436408:  nopl   0x0(%rax,%rax,1)
   0x0000000000436410:  push   %r12
   0x0000000000436412:  push   %rbp

(gdb) info registers 
rax            0x0      0
rbx            0x0      0
rcx            0x0      0
rdx            0x6ad05d 7000157
rsi            0x0      0
rdi            0x0      0

# lsb_release -rd
Description:    Ubuntu 15.10
Release:        15.10
# dpkg -S /usr/sbin/rsyslogd
rsyslog: /usr/sbin/rsyslogd
# apt-cache policy rsyslog
rsyslog:
  Installed: 8.12.0-1ubuntu2
  Candidate: 8.12.0-1ubuntu2
  Version table:
 *** 8.12.0-1ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status

** Affects: rsyslog (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1509589

Title:
  rsyslog crash on startup (segmentation violation due to NULL-pointer)

Status in rsyslog package in Ubuntu:
  New

Bug description:
  rsyslog won't start on fresh install of Ubuntu Wily

  Starting program: /usr/sbin/rsyslogd -n
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

  Program received signal SIGSEGV, Segmentation fault.
  0x0000000000436400 in ?? ()
  (gdb) bt
  #0  0x0000000000436400 in ?? ()
  #1  0x0000000000419605 in MsgSetRcvFrom ()
  #2  0x0000000000445b24 in logmsgInternal ()
  #3  0x00000000004223e6 in ?? ()
  #4  0x00000000004225b7 in ?? ()
  #5  0x0000000000438c68 in processCfSysLineCommand ()
  #6  0x0000000000411014 in cfsysline ()
  #7  0x000000000041469c in cnfDoCfsysline ()
  #8  0x00000000004546f0 in yylex ()
  #9  0x0000000000451463 in yyparse ()
  #10 0x0000000000412ef7 in ?? ()
  #11 0x0000000000413ef4 in load ()
  #12 0x00000000004464d7 in initAll ()
  #13 0x000000000040d990 in main ()

  (gdb) disassemble $rip-0x20,$rip+0x40
  Dump of assembler code from 0x4363e0 to 0x436440:
     0x00000000004363e0 <propDebugPrint+0>:       mov    %rdi,%rsi
     0x00000000004363e3 <propDebugPrint+3>:       lea    0x312e6(%rip),%rdi        # 0x4676d0
     0x00000000004363ea <propDebugPrint+10>:      sub    $0x8,%rsp
     0x00000000004363ee <propDebugPrint+14>:      xor    %eax,%eax
     0x00000000004363f0 <propDebugPrint+16>:      callq  0x422ff0 <dbgprintf>
     0x00000000004363f5 <propDebugPrint+21>:      xor    %eax,%eax
     0x00000000004363f7 <propDebugPrint+23>:      add    $0x8,%rsp
     0x00000000004363fb <propDebugPrint+27>:      retq   
     0x00000000004363fc:  nopl   0x0(%rax)
  => 0x0000000000436400:  lock addl $0x1,0x10(%rdi)
     0x0000000000436405:  xor    %eax,%eax
     0x0000000000436407:  retq   
     0x0000000000436408:  nopl   0x0(%rax,%rax,1)
     0x0000000000436410:  push   %r12
     0x0000000000436412:  push   %rbp

  (gdb) info registers 
  rax            0x0      0
  rbx            0x0      0
  rcx            0x0      0
  rdx            0x6ad05d 7000157
  rsi            0x0      0
  rdi            0x0      0

  # lsb_release -rd
  Description:    Ubuntu 15.10
  Release:        15.10
  # dpkg -S /usr/sbin/rsyslogd
  rsyslog: /usr/sbin/rsyslogd
  # apt-cache policy rsyslog
  rsyslog:
    Installed: 8.12.0-1ubuntu2
    Candidate: 8.12.0-1ubuntu2
    Version table:
   *** 8.12.0-1ubuntu2 0
          500 http://archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status

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