[Bug 946401] Re: bash crashed with SIGSEGV in _IO_vfprintf_internal()

[Dmitry Shachnev]

** Description changed:

- Paste of my session log:
+ Paste of my session log ("fg &" was an accident mistake, I wanted just
+ "fg"):
  
- mandriver at mandriver-laptop:~/Desktop/testdir$ firefox html/index.html 
+ mandriver at mandriver-laptop:~/Desktop/testdir$ firefox html/index.html
  ^Z
  [1]+  Stopped  firefox html/index.html
  mandriver at mandriver-laptop:~/Desktop/testdir$ python3 ~/retext-git/wpgen/wpgen.py usestyle SimpleGrey
  mandriver at mandriver-laptop:~/Desktop/testdir$ fg &
  [2] 29080
  mandriver at mandriver-laptop:~/Desktop/testdir$ fg
  firefox html/index.html
  Stopped
  [2]   Segmentation fault                   (core dumped) fg
  mandriver at mandriver-laptop:~/Рабочий стол/testdir$
  
  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: bash 4.2-1ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
  Uname: Linux 3.2.0-17-generic i686
  ApportVersion: 1.94-0ubuntu1
  Architecture: i386
  Date: Sun Mar  4 19:09:17 2012
  ExecutablePath: /bin/bash
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
  ProcCmdline: bash
  SegvAnalysis:
-  Segfault happened at: 0x889a14 <_IO_vfprintf_internal+12836>:	repnz scas %es:(%edi),%al
-  PC (0x00889a14) ok
-  source "%es:(%edi)" (0xffff03fa) not located in a known VMA region (needed readable region)!
-  destination "%al" ok
+  Segfault happened at: 0x889a14 <_IO_vfprintf_internal+12836>:	repnz scas %es:(%edi),%al
+  PC (0x00889a14) ok
+  source "%es:(%edi)" (0xffff03fa) not located in a known VMA region (needed readable region)!
+  destination "%al" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: bash
  StacktraceTop:
-  _IO_vfprintf_internal (s=0x9e6980, format=<optimized out>, ap=0xbfbfc478 "\b.\227\b") at vfprintf.c:1621
-  ___vfprintf_chk (fp=0x9e6980, flag=1, format=0xb7454cb1 <Address 0xb7454cb1 out of bounds>, ap=0xbfbfc474 "\177\003\377\377\b.\227\b") at vfprintf_chk.c:35
-  builtin_error ()
-  fg_builtin ()
-  ?? ()
+  _IO_vfprintf_internal (s=0x9e6980, format=<optimized out>, ap=0xbfbfc478 "\b.\227\b") at vfprintf.c:1621
+  ___vfprintf_chk (fp=0x9e6980, flag=1, format=0xb7454cb1 <Address 0xb7454cb1 out of bounds>, ap=0xbfbfc474 "\177\003\377\377\b.\227\b") at vfprintf_chk.c:35
+  builtin_error ()
+  fg_builtin ()
+  ?? ()
  Title: bash crashed with SIGSEGV in _IO_vfprintf_internal()
  UpgradeStatus: Upgraded to precise on 2012-02-10 (23 days ago)
  UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev nopasswdlogin plugdev sambashare tape video

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https://bugs.launchpad.net/bugs/946401

Title:
  bash crashed with SIGSEGV in _IO_vfprintf_internal()

Status in “bash” package in Ubuntu:
  New

Bug description:
  Paste of my session log ("fg &" was an accident mistake, I wanted just
  "fg"):

  mandriver at mandriver-laptop:~/Desktop/testdir$ firefox html/index.html
  ^Z
  [1]+  Stopped  firefox html/index.html
  mandriver at mandriver-laptop:~/Desktop/testdir$ python3 ~/retext-git/wpgen/wpgen.py usestyle SimpleGrey
  mandriver at mandriver-laptop:~/Desktop/testdir$ fg &
  [2] 29080
  mandriver at mandriver-laptop:~/Desktop/testdir$ fg
  firefox html/index.html
  Stopped
  [2]   Segmentation fault                   (core dumped) fg
  mandriver at mandriver-laptop:~/Рабочий стол/testdir$

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: bash 4.2-1ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
  Uname: Linux 3.2.0-17-generic i686
  ApportVersion: 1.94-0ubuntu1
  Architecture: i386
  Date: Sun Mar  4 19:09:17 2012
  ExecutablePath: /bin/bash
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
  ProcCmdline: bash
  SegvAnalysis:
   Segfault happened at: 0x889a14 <_IO_vfprintf_internal+12836>:	repnz scas %es:(%edi),%al
   PC (0x00889a14) ok
   source "%es:(%edi)" (0xffff03fa) not located in a known VMA region (needed readable region)!
   destination "%al" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: bash
  StacktraceTop:
   _IO_vfprintf_internal (s=0x9e6980, format=<optimized out>, ap=0xbfbfc478 "\b.\227\b") at vfprintf.c:1621
   ___vfprintf_chk (fp=0x9e6980, flag=1, format=0xb7454cb1 <Address 0xb7454cb1 out of bounds>, ap=0xbfbfc474 "\177\003\377\377\b.\227\b") at vfprintf_chk.c:35
   builtin_error ()
   fg_builtin ()
   ?? ()
  Title: bash crashed with SIGSEGV in _IO_vfprintf_internal()
  UpgradeStatus: Upgraded to precise on 2012-02-10 (23 days ago)
  UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev nopasswdlogin plugdev sambashare tape video

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