General
Issue is being internally investigated
Symptom
Kernel Panic due to Unexpected SERR after upgrade to 9.3(6).
Following traces are seen in 'show logging onboard stack-trace':
[228101.645916] cctrl DBG: cctrl_ow_write dev_type 5 data 4f
[228101.645919] CCTRL PANIC DUMP
[228101.645921] =========================
[228101.645922] WDT last punched at 228098253139590
[228101.645926] REG(0x60) = 3c
[228101.645929] REG(0x64) = 0
[228101.645933] REG(0x300) = baadbeef
[228101.645937] REG(0x304) = baadbeef
[228101.645938] =========================
[228101.646991] nxos_panic: Kernel panic - not syncing: Unexpected SERR
as well as high rate of interrupts from PCIe device 0000:00:1f.2:
[228103.703420] Dumping interrupt statistics
[228103.706006] 31: 184654 17 10019 PCI-MSI-edge 0000:00:1f.2
Conditions
N9K -EX devices upgraded to 9.3(6)