[Bug 1036283] Re: callgrind_control cannot connect because of different executable name

[Steve Langasek]

valgrind-3.7.0/debian/patches/fix-buffer-overflows.patch says:

 Description: fix a couple of overflows in vgdb
  the overflows cause vgdb to crash in quantal with gcc-4.7
  the crash does not occur on my precise platform but fix the issue
  there just to be safe.

I'm allowing this in the SRU in this case because it's been waiting in
the queue for so long and don't want to have to bounce it back out for
you.  But in the future, please don't include changes like this in SRU
that have no known upside - regardless of how small you think the
potential downside is.

** Changed in: valgrind (Ubuntu Precise)
       Status: Confirmed => Fix Committed

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1036283

Title:
  callgrind_control cannot connect because of different executable name

Status in “valgrind” package in Ubuntu:
  Fix Released
Status in “valgrind” source package in Precise:
  Fix Committed

Bug description:
  [Impact]
  When starting a Callgrind session using "valgrind", the actual executable name is "valgrind.bin". However, when callgrind_control searches for processes, its Perl regexp does not allow for this possibility. See callgrind_control line 32:
  Additionally the code contains several buffer overflows that can break depending on compiler optimizations.

  [TESTCASE]
    $ valgrind --tool=callgrind sleep 100 &
    $ callgrind_control -b
    No active callgrind runs detected.
  After making the change:
    $ valgrind --tool
    $ callgrind_control -b
    PID 23522: sleep 100

  [Regression Potential]
  the program currently doesn't work properly so there is little risk of things getting worse.
  The overflow fixes are applied upstream since several month and the process name fix is also in debian wheezy.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: valgrind 1:3.7.0-0ubuntu3
  ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
  Uname: Linux 3.2.0-27-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.0.1-0ubuntu11
  Architecture: amd64
  Date: Mon Aug 13 18:30:06 2012
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: valgrind
  UpgradeStatus: Upgraded to precise on 2012-08-02 (11 days ago)

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