/proc/self/maps paths missing on live session (was vlc won't start; eoan 19.10 & bionic 18.04 ubuntu/lubuntu/kubuntu/xubuntu/ubuntu-mate dailies)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Seth Forshee | ||
Disco |
Fix Released
|
High
|
Seth Forshee | ||
Eoan |
Fix Released
|
High
|
Seth Forshee |
Bug Description
SRU Justification
Impact: A patch to enable mounting overlayfs over shiftfs introduced a regression in /proc/pid/maps when a proc mount over an overlayfs mount is accessed from within a chroot. All paths within the file are / instead of paths to the files backing memory-mapped regions. This is causing issues in several different configurations.
Fix: Revert the offending patch.
Test Case: A simple reproducer can be found attached in lp1842382.sh.
Regression Potential: This reverts to the previous behavior. Mounting overlayfs over shiftfs will not work until a fixed patch is applied.
---
Using Lubuntu 19.10 daily 'live' : (later confirmed with Ubuntu/
From menu option, from pcmanfm-qt (trying to open an appropriate file), or from terminal I've been unable to start vlc.
lubuntu@lubuntu:~$ vlc
VLC media player 3.0.8 Vetinari (revision 3.0.8-0-
lubuntu@lubuntu:~$
No crash reports are visible (/var/crash/ is empty) and I see no reason, but I cannot get vlc to play files, or open. I'll continue to explore as I'm able.
QA-test on lenovo thinkpad x201 (i5-m520, 4gb, i915)
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: vlc 3.0.8-2
ProcVersionSign
Uname: Linux 5.2.0-15-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CasperVersion: 1.415
CurrentDesktop: LXQt
Date: Tue Sep 3 06:03:17 2019
LiveMediaBuild: Lubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190902)
SourcePackage: vlc
UpgradeStatus: No upgrade log present (probably fresh install)
CVE References
summary: |
- vlc won't start; eoan 19.10 lubuntu daily + vlc won't start; eoan 19.10 lubuntu/kubuntu/xubuntu daily |
description: | updated |
Changed in vlc (Ubuntu): | |
status: | Invalid → Incomplete |
tags: | added: rls-ee-incoming |
description: | updated |
Changed in linux (Ubuntu Disco): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Disco): | |
status: | Fix Committed → Fix Released |
Changed in linux (Ubuntu Disco): | |
status: | Fix Released → Fix Committed |
Changed in linux (Ubuntu Disco): | |
status: | Fix Committed → Fix Released |
boot Lubuntu 19.10 iso on
dell [optiplex] 755 (c2d-e8300, 8gb, amd/ati radeon rv610/radeon hd2400 pro/xt)
mounted hdd & navigated to mp4 & mp3 files, tried to use `vlc` to play alas no.
tried starting vlc from terminal - failure just as x201
tried starting vlc from menu - failure
Scanned `dmesg|squash` & only expected single line (I do check disc for defects before testing anyway)
/var/crash/ is also empty as with x201 test