I did the best I could to capture the PSOD itself in the attached image. Just checking to see if anyone else may have encountered this or similar before.
This system is a Ryzen 1700 on an AB350 based motherboard. lspci shows this:
0000:00:00.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Root Complex
0000:00:00.2 Generic system peripheral: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) I/O Memory Management Unit
0000:00:01.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
0000:00:01.1 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge [PCIe RP[0000:00:01.1]]
0000:00:01.3 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge [PCIe RP[0000:00:01.3]]
0000:00:02.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
0000:00:03.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
0000:00:03.1 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge [PCIe RP[0000:00:03.1]]
0000:00:04.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
0000:00:07.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
0000:00:07.1 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B [PCIe RP[0000:00:07.1]]
0000:00:08.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
0000:00:08.1 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B [PCIe RP[0000:00:08.1]]
0000:00:14.0 Serial bus controller: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller
0000:00:14.3 Bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge
0000:00:18.0 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 0
0000:00:18.1 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 1
0000:00:18.2 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 2
0000:00:18.3 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 3
0000:00:18.4 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 4
0000:00:18.5 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 5
0000:00:18.6 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 6
0000:00:18.7 Bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 7
0000:01:00.0 Mass storage controller: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961 [vmhba1]
0000:02:00.0 Serial bus controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset USB 3.1 xHCI Controller
0000:02:00.1 Mass storage controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset SATA Controller [vmhba2]
0000:02:00.2 Bridge:
0000:03:00.0 Bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port
0000:03:01.0 Bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port
0000:03:04.0 Bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port
0000:04:00.0 Network controller: Realtek Semiconductor Co., Ltd. Onboard Ethernet
0000:06:00.0 Network controller: Intel Corporation PRO/1000 PT Dual Port Server Adapter [vmnic0]
0000:06:00.1 Network controller: Intel Corporation PRO/1000 PT Dual Port Server Adapter [vmnic1]
0000:07:00.0 Display controller: NVIDIA Corporation GK208B [GeForce GT 710]
0000:07:00.1 Multimedia controller: NVIDIA Corporation GK208 HDMI/DP Audio Controller
0000:08:00.0 :
0000:08:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Platform Security Processor
0000:08:00.3 Serial bus controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) USB 3.0 Host Controller
0000:09:00.0 :
0000:09:00.2 Mass storage controller: Advanced Micro Devices Inc AMD FCH SATA Controller [AHCI Mode] [vmhba0]
I do have a Crucial BX300 SSD on the SATA connections. The odd thing about it is that it's showing latency in the order of 10-15 ms with minimal IO to that when in use. This system was stable under 6.5 and similar load/guest OSs (nested ESXi hosts), but that was strictly using the Samsung NVMe SSD + NAS storage (the crucial drive wasn't connected ever). I'm going to offload the Crucial disk and just use the NVMe Samsung and NAS again for a bit to see if that stabilizes the system for more than a week.
It took about 2-3 weeks of uptime to finally PSOD and produce the issue again (Second time) so I could actually capture data.