** Attachment added: "vlc -vvv output ending in "malloc_consolidate(): invalid chunk size"" https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/1798973/+attachment/5203363/+files/vlc-malloc.log
** Description changed: I'm seeing memory-related crashes when playing videos sliced (with ffmpeg -c copy) from mp4 streams (downloaded with youtube-dl). I'm attaching a sample clip which, granted, is pretty useless for a video, but which produces these crashes with 100% certainty for me; I just edited it down to a reasonable size and non-infringing content. The errors reported just before core is dumped are (mostly) "double free or corruption (fasttop)" or (less often) "malloc_consolidate(): invalid chunk size". - To be clear, my expectation here is not for the problematic clips have - useful content, or even to play back; just that vlc didn't crash. (Totem - for instance does not seem to crash with the same files.) + To be clear, my expectation here is not for the problematic clips to + have useful content, or even to play back; just that vlc didn't crash. + (Totem for instance does not seem to crash with the same files.) I'll attach logs for both the double free and malloc_consolidate cases (which I'm producing by running LC_ALL=C vlc -vvv out.mp4 in a loop). ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: vlc 3.0.3-1-1ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18 Uname: Linux 4.15.0-36-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat Oct 20 18:14:25 2018 InstallationDate: Installed on 2016-10-13 (737 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcEnviron: - TERM=xterm-256color - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=fi_FI.UTF-8 - SHELL=/bin/bash + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=fi_FI.UTF-8 + SHELL=/bin/bash SourcePackage: vlc UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1798973 Title: Crashes with "double free" or "invalid chunk size" with some mp4 files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/1798973/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
