Added package version to the description (apport-collect does not allow
me to collect the data since I am not the original reporter).
** Description changed:
Repeatedly unusable truncated crash files:
Bug 2012974, bug 2015842, bug 2015140, bug 2012075
Based on my own testing, the
** Tags added: patch
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https://bugs.launchpad.net/bugs/2015857
Title:
Repeatedly unusable truncated crash files (on log-out)
Status in apport package in
This behavior is only noticeable on log-out. Killing gnome-shell works.
I am using the 0001-apport-Write-coredump-at-beginning-and-quit.patch
with a delay of 0.005s:
```
$ killall -11 gnome-shell
$ tail /var/log/apport.log
ERROR: apport (pid 15107) 2023-04-19 13:53:03,089: called for pid 14206,
Note: Apport triggers this behavior, because it compresses the core dump
and base64 encodes the compressed result. That increases the time to
read the coredump file. In addition apport also takes some time to
collect the crash information.
** Summary changed:
- Repeatedly unusable truncated
One day of debugging gave more insight. Apport is not directly the
culprit. If reading from stdin takes too long, the input will be
truncated. Attached a patch for apport to write the coredump at the
beginning and quit. It can be slowed down by sleeping between the 1 MB
blocks. The longer the
Yes I noticed full gnome-shell core files are often 500MB (as is the
RSS), though they seem to be mostly zeroes as evidenced by the reported
filesystem usage. Not saying that's a bug, just an observation.
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I modified apport to write the core file right at the beginning and it
was correctly written. That points to an issue with apport itself. The
written core file is around 500 MB.
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If I kill gnome-shell the crash file is written correctly:
```
$ killall -11 gnome-shell
$ apport-retrace -g /var/crash/_usr_bin_gnome-shell.1000.crash
[...]
[New LWP 7620]
Warnung: Section `.reg-xstate/7229' in core file too small.
Downloading separate debug info for
Thanks for providing the steps to reproduce. Preparation:
1. Ubuntu 23.04 (lunar) desktop in a VM
2. Remove all crashes: `sudo rm -f /var/crash/*`
3. Downgrade gjs and libgjs0g to 1.76.0-1
Then did your steps. On the first tries the crash file was 49 MB in size
and retracing looks correct. On my
** Description changed:
Repeatedly unusable truncated crash files:
Bug 2012974, bug 2015842, bug 2015140, bug 2012075
Based on my own testing, the problems seems to happen if multiple
binaries crash simultaneously (like at logout). One crash file gets
fully written and the other
Steps to reproduce:
1. Make sure you don't have the fix for bug 1974293, so make sure
libgjs0g == 1.76.0-1
2. Log into Lunar.
3. Interact with the desktop, icon grid and calendar for 30 seconds.
4. Log out.
5. Crash files written.
** Changed in: apport (Ubuntu)
Status: Incomplete =>
And another.
** Attachment added: "_usr_bin_gnome-shell.1000.crash"
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/2015857/+attachment/5663204/+files/_usr_bin_gnome-shell.1000.crash
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I suspect the fix for bug 1974293 (released a minute ago) will hide the
problem for now, but my machine does still have one "useless" crash file
from last week (attached).
** Attachment added: "_usr_bin_gnome-shell.1000.crash"
I sort of recall there being code in apport to not capture crash files
during the log out process.
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https://bugs.launchpad.net/bugs/2015857
Title:
Repeatedly
Do you have logs and example for it? The linked bugs do not contain any
apport logs or the original .crash file. Can you provide an example how
to reproduce it?
** Changed in: apport (Ubuntu)
Status: New => Incomplete
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