Looks like the reported stopped after 1.26.1 so considering it fixes
with the update
** Changed in: cups-filters (Ubuntu)
Status: New => Fix Released
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On Wed, Jan 22, 2020 at 3:16 AM Till Kamppeter <1857...@bugs.launchpad.net>
wrote:
> Now I have tried with creating a fresh VM with the daily snapshot of
> Focal and tried to reproduce the crash. Both with all normal, the host
> providing some remote printers for which the cups-browsed in the VM
Now I have tried with creating a fresh VM with the daily snapshot of
Focal and tried to reproduce the crash. Both with all normal, the host
providing some remote printers for which the cups-browsed in the VM
creates local queues and also with CUPS on the host stopped so that
cups-browsed does not
seb128, thank you for the logs. Your cups-browsed uses the standard
configuration. What happens is that on shutdown, during the freeing of
the data structures for Avahi/DNS-SD support cups-browsed crashes.
During shutdown, near the very end, already after cups-browsed has
removed the queues which
@Till, debug logs attached now
** Attachment added: "cupsdebug.zip"
https://bugs.launchpad.net/ubuntu/+source/cups-filters/+bug/1857815/+attachment/5320416/+files/cupsdebug.zip
** Changed in: cups-filters (Ubuntu)
Status: Incomplete => New
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et>
Aan: "luc"
Verzonden: Maandag 13 januari 2020 19:09:34
Onderwerp: [Bug 1857815] Re: cups-browsed assert failure: corrupted
double-linked list
seb128, as you have found a way to reliably reproduce the bug, I want to
ask you to do the following:
Run the command
cupsctl --debug-lo
seb128, as you have found a way to reliably reproduce the bug, I want to
ask you to do the following:
Run the command
cupsctl --debug-logging
to activate logginf by CUPS.
Edit the /etc/cups/cups-browsed.conf file, making sure that it contains
a line
DebugLogging file
with no "#" in the
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
Right before the
memset(deleted_master, 0, sizeof(remote_printer_t));
deleted_master is allocated via
if (deleted_master == NULL &&
(deleted_master =
(remote_printer_t *)calloc(1, sizeof(remote_printer_t))) == NULL) {
debug_printf("ERROR: Unable to allocate memory.\n");
if
@Till, the error pointed out by valgrind happend when I manually start
cups-browsed at any time during the session, it's not a shutdown problem
==5706== Invalid write of size 8
==5706== at 0x124791: UnknownInlinedFun (string_fortified.h:71)
==5706== by 0x124791: update_cups_queues
The stack traces attached to this bug report suggest that cups-browsed
crashes on shutdown, but if cups-browsed is shut down during a reboot of
the machine, the apport message only appears after the machine has
completed the reboot and so makes the impression that the crash happened
during
Sorry, if you get the crash with the method describe above, please
attach /var/log/cups/cups-browsed.log, and NOT /var/log/cups/error_log.
If you do not get a crash with the method described above, try repeated
rebooting until you get a crash.
Once having the crash, attach
valgrind log of the error
==5706== Invalid write of size 8
==5706==at 0x124791: UnknownInlinedFun (string_fortified.h:71)
==5706==by 0x124791: update_cups_queues (cups-browsed.c:7381)
==5706==by 0x12A7C6: avahi_browser_shutdown (cups-browsed.c:10023)
==5706==by 0x12A85E:
Till, it looks like cups-browsed just segfault on start in focal, could
you have a look as a priority once you back from holidays?
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https://bugs.launchpad.net/bugs/1857815
Title:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: cups-filters (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1857815
** Tags added: rls-ff-incoming
** Changed in: cups-filters (Ubuntu)
Assignee: (unassigned) => Till Kamppeter (till-kamppeter)
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Title:
** Information type changed from Private to Public
** Changed in: cups-filters (Ubuntu)
Importance: Medium => High
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Title:
cups-browsed
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