group.of.nepali.translators team mailing list archive

[Marcus Tomlinson <marcus.tomlinson@xxxxxxxxxxxxx>]

openjdk 11 has since been backported to bionic.

** Changed in: linux (Ubuntu Bionic)
       Status: Confirmed => Fix Released

** No longer affects: libreoffice (Ubuntu)

** No longer affects: libreoffice (Ubuntu Xenial)

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https://bugs.launchpad.net/bugs/1699772

Title:
  linux-image-4.13.0-12-generic, linux-image-4.10.0-24-generic, linux-
  image-4.8.0-56-generic, linux-image-4.4.0-81-generic, linux-
  image-3.13.0-121-generic | Regression: many user-space apps crashing

Status in LibreOffice:
  Won't Fix
Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Xenial:
  Incomplete
Status in linux source package in Artful:
  Won't Fix
Status in linux source package in Bionic:
  Fix Released
Status in linux package in Debian:
  Fix Released

Bug description:
  Distribution: Ubuntu 16.04 x64 (Flavour: KDE Neon User Edition 5.10)

  linux-image-4.4.0-81-generic appears to contain a regression, probably
  related to the CVE-2017-1000364 fix backport / patch.

  Using this kernel, the Oracle Java browser plugin always crashes
  during stack-related actions on initialization. This means, the plugin
  completely stopped working.

  
  It works perfectly fine in linux-image-4.4.0-79-generic (vurlerable to CVE-2017-1000364) as well as linux-image-4.11.6-041106-generic, which also contains a fix for CVE-2017-1000364.


  uname -a:

  > Linux Zweiblum 4.4.0-81-generic #104-Ubuntu SMP Wed Jun 14 08:17:06
  UTC 2017 x86_64 x86_64 x86_64 GNU/Linux


  I tested Oracle Java 1.8 u131 as well as 1.6 u64 in Firefox 51.0.1 as
  well as Iceweasel / Firefox/3.5.16 in a chroot.

  Using linux-image-4.4.0-81-generic it crashes in all combinations
  while with both other kernels it works.

  
  I was not able to obtain any detailed crash information from Firefox 51.0.1, but Iceweasel 3.5.16 crashed completely, allowing me to obtain a stack trace which shows the relation to stack operations performed by the plugin, even without proper debug symbols:

  
  > (gdb) bt full
  > #0  0x00007fa06d805307 in _expand_stack_to(unsigned char*) () from /opt/java-8-oracle/jre/lib/amd64/server/libjvm.so
  > No symbol table info available.
  > #1  0x00007fa06d8053ae in os::Linux::manually_expand_stack(JavaThread*, unsigned char*) ()
  >    from /opt/java-8-oracle/jre/lib/amd64/server/libjvm.so
  > No symbol table info available.
  > #2  0x00007fa06d80cf0b in JVM_handle_linux_signal () from /opt/java-8-oracle/jre/lib/amd64/server/libjvm.so
  > No symbol table info available.
  > #3  0x00007fa06d802e13 in signalHandler(int, siginfo*, void*) () from /opt/java-8-oracle/jre/lib/amd64/server/libjvm.so
  > No symbol table info available.
  > #4  <signal handler called>

  
  I first assumed a bug in the Java plugin, but it works fine in Linux 4.11.6.

  
  The crash will be triggered by any applet, for example the test applet at:

  * https://java.com/en/download/installed8.jsp

  
  I'm running the Ubuntu 16.04 based KDE Neon distribution which somehow apparently does not allow me to use apport to report this bug:

  > $ LANG= apport-cli linux-image-4.4.0-81-generic
  > 
  > *** Collecting problem information
  > 
  > The collected information can be sent to the developers to improve the
  > application. This might take a few minutes.
  > .........
  > 
  > *** Problem in linux-image-4.4.0-81-generic
  > 
  > The problem cannot be reported:
  > 
  > This is not an official KDE package. Please remove any third party package and try again.

  If someone can tell me how to get apport working for this package, I
  can use it to collect additional information, but (unfortunately?) the
  problem should be fairly easy to reproduce...

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