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[Bug 1772593] Re: cpum_sf: ensure sample freq is non-zero

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Date: Tue, 22 May 2018 15:43:38 -0000
Reply-to: Bug 1772593 <1772593@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: linux (Ubuntu)
       Status: New => Triaged

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Artful)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Cosmic)
   Importance: High
     Assignee: Skipper Bug Screeners (skipper-screen-team)
       Status: Triaged

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Bionic)
       Status: New => Triaged

** Changed in: linux (Ubuntu Artful)
       Status: New => Triaged

** Changed in: linux (Ubuntu Xenial)
       Status: New => Triaged

** Changed in: linux (Ubuntu Bionic)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Artful)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1772593

Title:
  cpum_sf: ensure sample freq is non-zero

Status in Ubuntu on IBM z Systems:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Artful:
  In Progress
Status in linux source package in Bionic:
  In Progress
Status in linux source package in Cosmic:
  In Progress

Bug description:
  Description:  cpum_sf: ensure sample freq is non-zero
  Symptom:      A kernel crash might occur.
  Problem:      An FP divide exception during the sample rate
                initialization for the hardware sampling facility.
  Solution:     Ensure that the sample frequency of the perf
                event attribute is non-zero.
  Reproduction: Run trinity against the perf_event_open() syscall.
  Upstream-ID:  4bbaf2584b86b0772413edeac22ff448f36351b1
  Component: kernel

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