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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1886860
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu Eoan)
Status: New => Incomplete
** Changed in: linux (Ubuntu Focal)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1886860
Title:
cgroup refcount is bogus when cgroup_sk_alloc is disabled
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Bionic:
Confirmed
Status in linux source package in Eoan:
Incomplete
Status in linux source package in Focal:
Incomplete
Status in linux source package in Groovy:
Incomplete
Bug description:
When net_prio and net_cls cgroups are used, cgroup refcount is bogus,
as it's not incremented anymore, but decremented when sockets are
closed.
This might lead to crashes possibly because of use-after-free when
packets are received as shown in LP #1886668.
Cascardo.
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