Public bug reported:
* Explain the bug(s)
When cleaning up the nf_table in tcf_ct_flow_table_cleanup_work
there is no guarantee that the callback list, added to by
nf_flow_table_offload_add_cb, is empty. This means that it is
possible that the flow_block_cb memory allocated will be lost.
* brief explanation of fixes
Fix this by iterating the list and freeing the flow_block_cb entries
before freeing the nf_table entry (via freeing ct_ft).
* How to test
With mlx5 driver registers flow block callback, cleaning up rule with action ct
frees the ct_ft but with memory leak.
* What it could break.
Nothing breaks, memory leak is fixed.
** Affects: linux-bluefield (Ubuntu)
Importance: Undecided
Assignee: Bodong Wang (bodong-wang)
Status: In Progress
** Changed in: linux-bluefield (Ubuntu)
Status: New => In Progress
** Changed in: linux-bluefield (Ubuntu)
Assignee: (unassigned) => Bodong Wang (bodong-wang)
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https://bugs.launchpad.net/bugs/1934822
Title:
Possible memory leak of flow_block_cb
Status in linux-bluefield package in Ubuntu:
In Progress
Bug description:
* Explain the bug(s)
When cleaning up the nf_table in tcf_ct_flow_table_cleanup_work
there is no guarantee that the callback list, added to by
nf_flow_table_offload_add_cb, is empty. This means that it is
possible that the flow_block_cb memory allocated will be lost.
* brief explanation of fixes
Fix this by iterating the list and freeing the flow_block_cb entries
before freeing the nf_table entry (via freeing ct_ft).
* How to test
With mlx5 driver registers flow block callback, cleaning up rule with action
ct
frees the ct_ft but with memory leak.
* What it could break.
Nothing breaks, memory leak is fixed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-bluefield/+bug/1934822/+subscriptions
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