qubes-manager silently crashes every once in a while

[marmarek]

Reported by joanna on 24 Jul 2011 22:32 UTC
The actual crash error msg is very strange (obtained by running it from commandline):

Fatal Python error: deallocating None
Aborted

This applies to v1.1.2, but the changes since v1.1.1 were trivial and are likely not the cause. Instead, probably some changes to core got us into some race condition. Perhaps it causes some refcounts to be incorrectly managed... This really is strange.

Migrated-From: https://wiki.qubes-os.org/ticket/310

[marmarek]

Comment by joanna on 24 Jul 2011 22:33 UTC
I'm running core 1.6.11 BTW. No problems observed when running core 1.6.10:
http://git.qubes-os.org/?p=joanna/core.git;a=commit;h=6715759e32b8ef638c12ac53a601b0348276a972

[marmarek]

Comment by joanna on 24 Jul 2011 22:33 UTC
I'm running core 1.6.11 BTW. No problems observed when running core 1.6.10:
http://git.qubes-os.org/?p=joanna/core.git;a=commit;h=6715759e32b8ef638c12ac53a601b0348276a972

[marmarek]

Comment by rafal on 25 Jul 2011 14:14 UTC
Is there any correlation between user actions and manager crash ? Or does it crash without user input ? Any correlation to other events (vm start/stop) ?

[marmarek]

Comment by rafal on 25 Jul 2011 14:14 UTC
Is there any correlation between user actions and manager crash ? Or does it crash without user input ? Any correlation to other events (vm start/stop) ?

[marmarek]

Comment by joanna on 25 Jul 2011 14:25 UTC
I was unable to find an exact event that forces this crash. What I observed:

1. it happened a few times in a row when I was making a backup (qvm-backup)
2. it happened a few times when I was starting/stopping a VM
3. it doesn't seem to be related to querying the qubes DB (e.g. I run qvm-ls in a loop and nothing happened).

[marmarek]

Comment by joanna on 25 Jul 2011 14:25 UTC
I was unable to find an exact event that forces this crash. What I observed:

1. it happened a few times in a row when I was making a backup (qvm-backup)
2. it happened a few times when I was starting/stopping a VM
3. it doesn't seem to be related to querying the qubes DB (e.g. I run qvm-ls in a loop and nothing happened).

[marmarek]

Comment by rafal on 25 Jul 2011 15:11 UTC
Most probably fixed in
http://git.qubes-os.org/?p=rafal/xen.git;a=commit;h=35c8e3baeb46f64c7c58e8f952b5ff2be3a5fe37
prebeta2 branch.
Marek, you may wish to rectify this upstream ?

[marmarek]

Comment by rafal on 25 Jul 2011 15:11 UTC
Most probably fixed in
http://git.qubes-os.org/?p=rafal/xen.git;a=commit;h=35c8e3baeb46f64c7c58e8f952b5ff2be3a5fe37
prebeta2 branch.
Marek, you may wish to rectify this upstream ?