[Bug 1773796] [NEW] Segmentation fault in __strcmp_ssse3

[Jacopo Carravieri]

Public bug reported:

I am developing a custom program which used to work without errors in
Ubuntu 16.04, but crashes very often in the current release. The core
dump says the segmentation fault occurs in "__strcmp_ssse3", which is
ultimately called from OpenCV's VideoCapture constructor I use several
times in my program.

I attached an archive with the debug binary and the core dump to this
report (the password is the name of the function in which the bug
occurs).

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libc6 2.27-3ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon May 28 14:41:01 2018
Dependencies:
 gcc-8-base 8-20180414-1ubuntu2
 libc6 2.27-3ubuntu1
 libgcc1 1:8-20180414-1ubuntu2
InstallationDate: Installed on 2018-05-24 (3 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: glibc
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug bionic

** Attachment added: "debug binary and core dump"
   https://bugs.launchpad.net/bugs/1773796/+attachment/5145537/+files/binary_coredump.zip

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https://bugs.launchpad.net/bugs/1773796

Title:
  Segmentation fault in __strcmp_ssse3

Status in glibc package in Ubuntu:
  New

Bug description:
  I am developing a custom program which used to work without errors in
  Ubuntu 16.04, but crashes very often in the current release. The core
  dump says the segmentation fault occurs in "__strcmp_ssse3", which is
  ultimately called from OpenCV's VideoCapture constructor I use several
  times in my program.

  I attached an archive with the debug binary and the core dump to this
  report (the password is the name of the function in which the bug
  occurs).

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: libc6 2.27-3ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
  Uname: Linux 4.15.0-22-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Mon May 28 14:41:01 2018
  Dependencies:
   gcc-8-base 8-20180414-1ubuntu2
   libc6 2.27-3ubuntu1
   libgcc1 1:8-20180414-1ubuntu2
  InstallationDate: Installed on 2018-05-24 (3 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  SourcePackage: glibc
  UpgradeStatus: No upgrade log present (probably fresh install)

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