Seeing this same issue. In my case, it ended up being caused by Crowdstrike Falcon Sensor combined with this specific kernel. Reverting the kernel or upgrading Falcon (via Falcon upgrade policy) works around this issue, for now.
I think I see that 6.1.87 has attempted to fix some BHI implementation issues that were originally introduced in 6.1.85. Perhaps certain kernel modules aren't ready for this syscall hardening?
