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[Bug Watch Updater <1571017@xxxxxxxxxxxxxxxxxx>]

** Changed in: mozjs (Debian)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1571017

Title:
  [arm64] libmozjs24 crashes w/ 48-bit VA

Status in Spidermonkey Javascript engine:
  Fix Released
Status in mozjs package in Ubuntu:
  New
Status in mozjs24 package in Ubuntu:
  Fix Released
Status in mozjs source package in Xenial:
  New
Status in mozjs24 source package in Xenial:
  Triaged
Status in mozjs source package in Yakkety:
  New
Status in mozjs24 source package in Yakkety:
  Triaged
Status in mozjs package in Debian:
  Fix Released
Status in mozjs24 package in Debian:
  Fix Released

Bug description:
  [Impact]
  libmozjs24 does not support 48-bit virtual addresses on arm64. 48-bit virtual addresses are enabled in the Ubuntu 16.04 kernel (though not on the kernel used on the buildds). This causes applications to crash.

  [Test Case]
  apt source mozjs24
  sudo apt build-dep -y mozjs24
  sudo apt install -y fakeroot
  cd mozjs24-24.2.0
  fakeroot make -f debian/rules build
  cd js/src
  make
  ./jsapi-tests/jsapi-tests 

  Unpatched source crashes for me immediately on xenial:
  dannf@mustang:~/mozjs24-24.2.0/js/src$ ./jsapi-tests/jsapi-tests 
  testXDR_sourceMap
  Segmentation fault

  All tests pass w/ patched source

  [Regression Risk] 
  I'd suggest running through the jsapi-tests on each supported Ubuntu architecture. I've only ran it on arm64 so far.

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