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[dann frazier <dann.frazier@xxxxxxxxxxxxx>]

** Changed in: mozjs24 (Ubuntu Yakkety)
       Status: Triaged => Won't Fix

** Changed in: mozjs (Ubuntu Xenial)
       Status: New => Won't Fix

** Changed in: mozjs (Ubuntu Yakkety)
       Status: New => Won't Fix

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Matching subscriptions: Ubuntu 16.04 Bugs
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:
  Won't Fix
Status in mozjs24 source package in Xenial:
  In Progress
Status in mozjs source package in Yakkety:
  Won't Fix
Status in mozjs24 source package in Yakkety:
  Won't Fix
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]
  = mozjs =
  $ sudo apt install couchdb-bin
  $ couchjs a.js 
  Segmentation fault

  = mozjs24 =
  $ cat a.js
  print("hello")
  $ js24 a.js
  Segmentation fault

  [Regression Risk]
  The fix for mozjs24 is ifdef'd to only apply to arm64. Since arm64 is currently segfaulting with a very simple program, there's very little chance of making things worse.

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