Symptom

C9300L-24P-4X running 17.6.4 is reporting below logs indicating Hardware failure of CPU, however CPU is working fine (usage <10%) Switch 1 R0/0: kernel: mce: [Hardware Error]: PROCESSOR 0:506f1 TIME 1683168790 SOCKET 0 APIC 18 microcode 32 Switch 1 R0/0: kernel: mce: [Hardware Error]: CPU 3: Machine Check: 0 Bank 1: d4200040000b110a Switch 1 R0/0: kernel: mce: [Hardware Error]: TSC 346c598f27a65c ADDR 26d5b89c8 Switch 1 R0/0: kernel: mce: [Hardware Error]: PROCESSOR 0:506f1 TIME 1683531727 SOCKET 0 APIC 18 microcode 32 Switch 1 R0/0: kernel: mce: [Hardware Error]: CPU 3: Machine Check: 0 Bank 1: d42000800001110a Switch 1 R0/0: kernel: mce: [Hardware Error]: TSC 374289bfd9daf8 ADDR 6bf89c0 %IOSXE-0-PLATFORM: Switch 1 R0/0: kernel: mce: [Hardware Error]: PROCESSOR 0:506f1 TIME 1683673248 SOCKET 0 APIC 18 microcode 32 %IOSXE-0-PLATFORM: Switch 1 R0/0: kernel: mce: [Hardware Error]: CPU 3: Machine Check: 0 Bank 1: d42000000004110a %IOSXE-0-PLATFORM: Switch 1 R0/0: kernel: mce: [Hardware Error]: TSC 0 ADDR 2508989c0 --- reload --- Switch 1 R0/0: kernel: mce: [Hardware Error]: TSC 69f4316e52 ADDR 12c0789d0 Switch 1 R0/0: kernel: mce: [Hardware Error]: TSC 69f4316e52 ADDR 12c0789d0 Switch 1 R0/0: kernel: mce: [Hardware Error]: PROCESSOR 0:506f1 TIME 1683673417 SOCKET 0 APIC 18 microcode 32 ------------------ show process cpu history ------------------ 11111 222 557777711111111111111111111111111111111111111114444455555000 100 90 80 70 60 50 40 30 20 * 10 ******* ***** ****** 0....5....1....1....2....2....3....3....4....4....5....5....6 0 5 0 5 0 5 0 5 0 5 0

Conditions

C9300L-24P-4X running 17.6.4

Workaround

No known workaround No impact

Further Problem Description