[Bug 160999] Re: Apport doesn't overwrite existing core files
And nearly 13 years later, we are still here. If I have a core file in the Current directory and another run of the program encounters a fault, the old core (possibly months old) prevents the current core file from being written. Outstanding! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
Same problem here! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
** Changed in: apport (Ubuntu) Status: Triaged => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
@k04jg02, as noted in comment #7, this bug has no effect on the Ubuntu Error Reporting process for software that is distributed through normal channels. Instead, for software that comes from any other source, apport seems to make a 'best-efforts' approach to dump a core file, roughly following some of the conventions of the usual core dump procedure. However, there's nothing in core(5) that says that any downstream program receiving a core dump (in this case apport) must do anything specific with it. That said, for developers, and in particular newbies trying to get into coding, apport's behavior is fairly insidious and confusing. Here are a few suggestions and possible workarounds for consideration: -[partial workaround] If you set the `kernel.core_uses_pid` sysctl to 1, apport respects this and always generates core.PID files. This doesn't solve the broken default behavior, and also doesn't guarantee a new file, since PIDs can be reused, but it helps. (`sysclt kernel.core_uses_pid=1`, or edit /etc/sysctl.conf) -[questionable workaround] Use apport to capture crashes for unpackaged software, by adding the lines ```[main] unpackaged=true``` to ~/.config/apport/settings. Now your program crashes will be handled like those of any Ubuntu-provided software: They will generate a .crash file in /var/crash (which can be unpacked with apport-unpack to access the core dump); they will generate an apport crash dialog box, and will even be uploaded to errors.ubuntu.com by whoopsie if you check the 'Send error report' box, (which is almost certainly a bad idea). -[upstream solution] kernel could support both writing out a core file (according the rules in core(5) , and passing the core to an external program. This would be ideal, since it would not require apport to try to duplicate and track kernel core dump behavior. -[mitigation] Patch apport to just make the default behavior a little more sane, even if not perfectly copying the usual behavior. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
9 years later and still broken! Can confirm still exists in 16.04. Does no one develop on Ubuntu or has every developer in the last nine years manually removed apport? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
Here's how to disable apport and get the core handling necessary for development: http://askubuntu.com/questions/93457/how-do-i-enable-or-disable-apport -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
What, 5 years with no fix? I finally got annoyed enough at this and started looking into why Ubuntu is doing this and how to change it. I assumed it was intentional, but now I see it's a bug. Highly annoying for developing software under Ubuntu. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
Can confirm is still in 12.04. Perhaps I misunderstand the scope of this bug, but AFAICT this makes every core file submitted by every user to help developers debugging every issue in Ubuntu potentially a red herring, because when a user submits a core it will be from the first crash that occurred rather than the most recent one. Is the main way that people debug their software on Linux being broken really of 'Low' importance? How the heck has every developer put up with this for the last 4 years? :P In particular this is nasty for development because it means after you fix a bug in your source and rebuild, if your program still crashes but for a different reason than before it will appear as if you didn't fix the bug because the core will be the same. Thankfully gdb warns when the executable is newer than the core or I wouldn't have caught this... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
** Changed in: apport (Ubuntu) Assignee: Martin Pitt (pitti) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 160999] Re: Apport doesn't overwrite existing core files
** Summary changed: - Apport doesn't conform to core(5) + Apport doesn't overwrite existing core files -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/160999 Title: Apport doesn't overwrite existing core files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/160999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
