FYI, we noticed the below changes on commit 0184d50f9fd17658c232d6ee6d465a87f989d706 ("tracing: Fix bad parameter passed in branch selftest") The kernel Oops before is fixed, but there are still some warning in dmesg as follow, just FYI. [ 1.676055] Switching to clocksource kvm-clock [ 1.679154] Warning: could not register all branches stats [ 1.679154] Warning: could not register annotated branches stats [ 1.750323] pnp: PnP ACPI init [ 1.750960] ACPI: bus type PNP registered [ 1.751697] IOAPIC[0]: Set routing entry (0-8 -> 0x38 -> IRQ 8 Mode:0 Active:0 Dest:1) Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Huang, Ying