This splat is a regression from 5.3.x series, and results in tainted kernel on every startup. Still happens with 5.4.2.
Dec 06 23:26:27 flap.local kernel: WARNING: CPU: 2 PID: 1 at kernel/trace/trace.c:8106 create_trace_option_files+0x1ef/0x220
Dec 06 23:26:27 flap.local kernel: Modules linked in:
Dec 06 23:26:27 flap.local kernel: CPU: 2 PID: 1 Comm: swapper/0 Tainted: G W 5.4.2-300.fc31.x86_64 #1
Dec 06 23:26:27 flap.local kernel: Hardware name: HP HP Spectre Notebook/81A0, BIOS F.43 04/16/2019
Dec 06 23:26:27 flap.local kernel: RIP: 0010:create_trace_option_files+0x1ef/0x220
Upstream is looking into it.
I'm not seeing it with 5.5.0-0.rc1.git0.1.fc32.x86_64+debug
This is still happening in 5.4.5-300.fc31.x86_64
Should be fixed by commit: a356646a56857c2e5ad875beec734d7145ecd49a ("tracing: Do not create directories if lockdown is in affect")
I'm not seeing it in linux-stable@ though
*********** MASS BUG UPDATE **************
We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 31 kernel bugs.
Fedora 31 has now been rebased to 5.5.7-200.fc31. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.
If you have moved on to Fedora 32, and are still experiencing this issue, please change the version to Fedora 32.
If you experience different issues, please open a new bug report for those.
I'm not seeing it in 5.5 or 5.6. Closing.