You are right Till, it seems to segfault when the service is stopped, following your step, when doing $ sudo systemctl stop cups-browsed the apport prompt is displayed
the error_log is empty though Can you try if you get the issue on stopping the service? Note that the valgrind log error is not happening on stop so there is still something weird/buggy in that codepath -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups-filters in Ubuntu. https://bugs.launchpad.net/bugs/1857815 Title: cups-browsed assert failure: corrupted double-linked list Status in cups-filters package in Ubuntu: Incomplete Bug description: Same bug on Focal ProblemType: Crash DistroRelease: Ubuntu 20.04 Package: cups-browsed 1.26.0-1 ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3 Uname: Linux 5.4.0-9-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu15 Architecture: amd64 AssertionMessage: corrupted double-linked list CupsErrorLog: Date: Thu Dec 26 08:18:13 2019 ExecutablePath: /usr/sbin/cups-browsed InstallationDate: Installed on 2019-12-12 (17 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20191211) Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: No destinations added. Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 0cf3:e007 Qualcomm Atheros Communications Bus 001 Device 003: ID 1bcf:2c01 Sunplus Innovation Technology Inc. Integrated Webcam Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Inspiron 15 7000 Gaming Papersize: a4 ProcAttrCurrent: /usr/sbin/cups-browsed (enforce) ProcCmdline: /usr/sbin/cups-browsed ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-9-generic root=UUID=ada0b905-9f6f-4911-9311-d1930ae73b8a ro quiet splash vt.handoff=7 Signal: 6 SourcePackage: cups-filters StacktraceTop: __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fa8703a73a5 "%s\n") at ../sysdeps/posix/libc_fatal.c:181 malloc_printerr (str=str@entry=0x7fa8703a54d3 "corrupted double-linked list") at malloc.c:5332 unlink_chunk (p=p@entry=0x55c22905f000, av=0x7fa8703d8b80 <main_arena>) at malloc.c:1460 _int_malloc (av=av@entry=0x7fa8703d8b80 <main_arena>, bytes=bytes@entry=184) at malloc.c:4041 __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3428 Title: cups-browsed assert failure: corrupted double-linked list UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: dmi.bios.date: 05/17/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.10.0 dmi.board.name: 0P84C9 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.10.0:bd05/17/2019:svnDellInc.:pnInspiron157000Gaming:pvr:rvnDellInc.:rn0P84C9:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Inspiron dmi.product.name: Inspiron 15 7000 Gaming dmi.product.sku: 0798 dmi.sys.vendor: Dell Inc. separator: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups-filters/+bug/1857815/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
