This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1799281
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
** Tags added: bionic
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https://bugs.launchpad.net/bugs/1799281
Title:
[Bionic][Cosmic] ipmi: Fix timer race with module unload
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
If you attempt to remove and insert the ipmi_ssif module a number of times,
it would result in a kernel panic. This is due to mod_timer from arming a timer
that was already removed by del_timer during module unload.
[Fix]
In linux-next:
0711e8c1b457 ipmi: Fix timer race with module unload
[Test]
-- Test Case --
for i in {1..500}; do sudo modprobe -r ipmi_ssif; sleep 2s ; sudo modprobe
ipmi_ssif || exit; done
----------------
After the patch was applied, no kernel panics were obsereved. Tested on
Cavium ThunderX2.
[Regression Risk]
The patch was applied to bionic and tested tested on a Cavium ThunderX2 and
no regressions were found. Risk of regression none.
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