Re: [linux-next:master] [x86] 66fbf67705: kernel-selftests.kvm.hardware_disable_test.fail

[Sebastian Andrzej Siewior]

On 2025-02-20 17:30:22 [+0100], Marco Elver wrote:
> > How much do we care here? Is this something that makes UBSAN + KASAN
> > folks uncomfortable? Or is lockdep slowing things down anyway?
> 
> Does this series from Waiman help?
> https://lore.kernel.org/all/20250213200228.1993588-4-longman@xxxxxxxxxx/

I have applied

| locking/lock_events: Add locking events for rtmutex slow paths
| locking/lock_events: Add locking events for lockdep
| locking/lockdep: Disable KASAN instrumentation of lockdep.c
| locking/lockdep: Add kasan_check_byte() check in lock_acquire()

and with this I am down to:

| ~# time ./hardware_disable_test
| Random seed: 0x6b8b4567
| 
| real    0m29.517s
| user    0m0.493s
| sys     0m10.891s

Which is the pre-RCU case. Yes, the series from Waiman helps. This is my
favorite solution.

Sebastian