[Bug 1695080] [NEW] crash during thread exit when using thread local storage

[Mike Gulick]

Public bug reported:

An application we develop crashes on exit with:
*** Error in `foo': free(): invalid pointer: 0x0000000009309bc0 ***

This issue occurs when there are a large number of threads running which
use thread local storage.  We have identified the issue as an existing
upstream glibc bug, #13862.  This bug was fixed in glibc-2.21.  See
https://sourceware.org/bugzilla/show_bug.cgi?id=13862.  The upstream bug
report has a reproducer which reliably reproduces the problem.

I have reported this bug to Debian (#854007), and provided a backported
patch for the glibc-2.19 package included in Debian-8 (0001-Resize-DTV-
if-the-current-DTV-isn-t-big-enough.patch).  I have not tested whether
this patch resolves this issue in eglibc-2.19 in Ubuntu 14.04, however
the reproducer in the original glibc bug report does reliably reproduce
the problem on Ubuntu 14.04.5 with the latest glibc6 package installed.

The Debian bug report can be found at https://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=854007

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libc6 2.19-0ubuntu6.11
ProcVersionSignature: Ubuntu 3.13.0-119.166-generic 3.13.11-ckt39
Uname: Linux 3.13.0-119-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.24
Architecture: amd64
Date: Thu Jun  1 15:43:48 2017
Dependencies:
 gcc-5-base 5.3.0-3ubuntu1~14.04 [origin: unknown]
 libc6 2.19-0ubuntu6.11
 libgcc1 1:5.3.0-3ubuntu1~14.04 [origin: unknown]
 multiarch-support 2.19-0ubuntu6.11
InstallationDate: Installed on 2015-04-09 (784 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: eglibc
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug third-party-packages trusty

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https://bugs.launchpad.net/bugs/1695080

Title:
  crash during thread exit when using thread local storage

Status in eglibc package in Ubuntu:
  New

Bug description:
  An application we develop crashes on exit with:
  *** Error in `foo': free(): invalid pointer: 0x0000000009309bc0 ***

  This issue occurs when there are a large number of threads running
  which use thread local storage.  We have identified the issue as an
  existing upstream glibc bug, #13862.  This bug was fixed in
  glibc-2.21.  See
  https://sourceware.org/bugzilla/show_bug.cgi?id=13862.  The upstream
  bug report has a reproducer which reliably reproduces the problem.

  I have reported this bug to Debian (#854007), and provided a
  backported patch for the glibc-2.19 package included in Debian-8 (0001
  -Resize-DTV-if-the-current-DTV-isn-t-big-enough.patch).  I have not
  tested whether this patch resolves this issue in eglibc-2.19 in Ubuntu
  14.04, however the reproducer in the original glibc bug report does
  reliably reproduce the problem on Ubuntu 14.04.5 with the latest
  glibc6 package installed.

  The Debian bug report can be found at https://bugs.debian.org/cgi-
  bin/bugreport.cgi?bug=854007

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: libc6 2.19-0ubuntu6.11
  ProcVersionSignature: Ubuntu 3.13.0-119.166-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-119-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.24
  Architecture: amd64
  Date: Thu Jun  1 15:43:48 2017
  Dependencies:
   gcc-5-base 5.3.0-3ubuntu1~14.04 [origin: unknown]
   libc6 2.19-0ubuntu6.11
   libgcc1 1:5.3.0-3ubuntu1~14.04 [origin: unknown]
   multiarch-support 2.19-0ubuntu6.11
  InstallationDate: Installed on 2015-04-09 (784 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  SourcePackage: eglibc
  UpgradeStatus: No upgrade log present (probably fresh install)

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