[Bug 1599906] [NEW] LVM2 snapshot merge error report: "lvm crashed with SIGSEGV in lv_is_merging_cow()"

[jub]

Public bug reported:

Xubuntu 14.04.4 LTS
SSD is only drive (/dev/sda)
/dev/sda1 is boot partition
/dev/sda5 is encrypted LUKS partition
logical volumes sit on top of the LUKS partition

package: lvm2 2.02.98-6ubuntu2
problem type: Crash
title: lvm crashed with SIGSEGV in lv_is_merging_cow()

This bug is repeatable. If I create a LVM snapshot of lvroot (mounted to
/) and run lvconvert --merge to restore the snapshot, after rebooting,
this error report is generated.

However, if instead of running lvconvert --merge inside the system, I
boot into a live ISO session and run lvconvert --merge, the process
completes without any error being reported.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lvm2 2.02.98-6ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-41.48~14.04.1-generic 4.2.8-ckt11
Uname: Linux 4.2.0-41-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CurrentDesktop: XFCE
Date: Thu Jul  7 11:36:56 2016
InstallationDate: Installed on 2016-07-02 (5 days ago)
InstallationMedia: Xubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: lvm2
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: lvm2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

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Title:
  LVM2 snapshot merge error report: "lvm crashed with SIGSEGV in
  lv_is_merging_cow()"

Status in lvm2 package in Ubuntu:
  New

Bug description:
  Xubuntu 14.04.4 LTS
  SSD is only drive (/dev/sda)
  /dev/sda1 is boot partition
  /dev/sda5 is encrypted LUKS partition
  logical volumes sit on top of the LUKS partition

  package: lvm2 2.02.98-6ubuntu2
  problem type: Crash
  title: lvm crashed with SIGSEGV in lv_is_merging_cow()

  This bug is repeatable. If I create a LVM snapshot of lvroot (mounted
  to /) and run lvconvert --merge to restore the snapshot, after
  rebooting, this error report is generated.

  However, if instead of running lvconvert --merge inside the system, I
  boot into a live ISO session and run lvconvert --merge, the process
  completes without any error being reported.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: lvm2 2.02.98-6ubuntu2
  ProcVersionSignature: Ubuntu 4.2.0-41.48~14.04.1-generic 4.2.8-ckt11
  Uname: Linux 4.2.0-41-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Jul  7 11:36:56 2016
  InstallationDate: Installed on 2016-07-02 (5 days ago)
  InstallationMedia: Xubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: lvm2
  UpgradeStatus: No upgrade log present (probably fresh install)

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