Public bug reported:
When snapd crashes or restarts it closes its connection to the kernel
and the listener state, and all existing notifications are lost.
This is a problem for snapd as it means prompt information is lost,
causing failures for the user, and a need to re-prompt the user. The
user experience is also poor, as this causes extra prompts, denials
after a prompt was allowed and general poor user experience.
Prompts that occur during a crash/restart are immediately denied leading
to further issues.
While snapd could store some of the lost state for each prompt received,
the only way to ensure notification received during crash recovery or
restart is to have the kernel listener to continue to queue
notifications.
This requires apparmor to gain the ability to delay listener cleanup and
continue to receive notifications while snapd restarts.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2103578
Title:
AppArmor notifications loose state when listener crashes
Status in linux package in Ubuntu:
New
Bug description:
When snapd crashes or restarts it closes its connection to the kernel
and the listener state, and all existing notifications are lost.
This is a problem for snapd as it means prompt information is lost,
causing failures for the user, and a need to re-prompt the user. The
user experience is also poor, as this causes extra prompts, denials
after a prompt was allowed and general poor user experience.
Prompts that occur during a crash/restart are immediately denied
leading to further issues.
While snapd could store some of the lost state for each prompt
received, the only way to ensure notification received during crash
recovery or restart is to have the kernel listener to continue to
queue notifications.
This requires apparmor to gain the ability to delay listener cleanup
and continue to receive notifications while snapd restarts.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2103578/+subscriptions
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