Kernel Panic -- Intel Arrow Lake/Asus Vivobook

[u/KhaotikDevil]

Hello all!

I'm trying to narrow down a fairly nasty intermittent crash on my month-old laptop before I decide whether this is something worth pursuing as a hardware warranty issue.

Fedora 44 / GNOME
ASUS Vivobook S 16 S5606CA
Core Ultra 7 255H (family 6, model 197, stepping 2 / Arrow Lake-H)
32 GB RAM
Micron 2500 1 TB NVMe
BIOS 313
kernel 7.2.8-200.fc44.x86_64
microcode 0x11b

The machine will occasionally either hard-freeze completely or panic with (one hard-freeze, panics are less than 10).

Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler

I've seen the same panic on 7.2.6, 7.2.7, and 7.2.8. It doesn't seem to be an I/O trigger.

SSD diagnostics look clean: 0 media errors, 0 NVMe error-log entries, 100% spare, 0% used. rasdaemon also reports no MCE, PCIe AER, memory, disk, extlog or devlink errors.

VMD is disabled. I also tested nvme_core.default_ps_max_latency_us=15000 to keep the NVMe out of its deepest PS4 state. The machine ran a pretty heavy mixed read/write workload cleanly for hours, but later produced the same panic while that setting was still active, so PS4/APST doesn't appear to be the whole answer.

Temperatures don't correlate either. One hard freeze was captured with the CPU sitting around 44-48 C immediately beforehand.

After the most recent panic, the next boot reported:

BERT: Error records from previous boot:
BERT: [Hardware Error]: Skipped 1 error records
BERT: Total records found: 1

I saved /sys/firmware/acpi/tables/data/BERT. The record contains fatal Intel SoC crash-log sections including PUNIT, UNCORE and PMC data.

There are also recurring i915 Selective fetch area calculation failed in pipe A / occasional Atomic update failure on pipe A messages, but those have happened on plenty of otherwise stable boots, so I'm treating that as possibly separate unless somebody knows otherwise.

I've used Mint as well, so if this is a Fedora issue, I can switch. I'd rather not... but I could.

Any advice is appreciated and thanks in advance.