ftrace synthetic_events selftests failure in 5.11
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Low
|
Unassigned | ||
Hirsute |
Fix Released
|
Low
|
Unassigned |
Bug Description
[Impact]
The synthetic_events ftrace test is failing in 5.11:
01:58:54 DEBUG| [stdout] # [68] event trigger - test synthetic_events syntax parser errors [FAIL]
This happens because the synthetic_event parser/syntax has been reworked in 5.12 and the selftest has been also updated. However, in 5.11 we got only the commit that updates the test without the corresponding rework in the kernel, therefore the test is failing.
[Fix]
Revert the commit that updates the ftrace synthetic_events selftest.
[Test plan]
Run the linux ftrace selftest to trigger the problem (e.g., make TARGETS=ftrace kselftests).
[Where problems could occur]
This fix reverts a test case, if the kernel receives the ftrace rework via stable updates in the future we may see failures with the same test.
Changed in linux (Ubuntu Hirsute): | |
importance: | Undecided → Low |
Changed in linux (Ubuntu Hirsute): | |
status: | Incomplete → Fix Committed |
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 1925539
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.