Acabamos de receber um novo servidor Dual CPU e ele continua travando com um Kernel Panic logo após a inicialização, isso aconteceu mesmo durante a configuração do sistema operacional quando estava ocioso. Consegui instalar o sistema operacional e permitir que o mcelog tentasse entender o que está acontecendo, embora eu não tenha certeza do que fazer com a saída. Ler on-line me fez pensar que isso pode ser um DIMM defeituoso em um dos Sockets (1), mas corri o memtest com vários passos e não encontrei erros. É possível que este seja um problema de software? Eu já experimentei 2 SOs e a mesma coisa aconteceu em ambos, embora no Debian / Proxmox fosse muito mais comum acontecer do que no CentOS.
Especificações do servidor:
Xeon E5-2620v4 Intel 8-Core duplo
2 x DIMM 32 GB DDR4 2400 MHz RECC DDR4
MB SuperMicro X10DRL-i
Não são as térmicas da CPU porque elas nunca ultrapassaram 35ºC durante o memtest ou a instalação do sistema operacional. Eu também consegui fazer alguns benchmarks na CPU antes que ela falhasse e as temperaturas estivessem boas.
Como posso descobrir o que está acontecendo aqui? Eu posso ter acesso ao servidor por alguns minutos antes que isso aconteça, eu já baixei o despejo vmcore, mas não tenho certeza do que fazer com ele.
Aqui está o log do mce 50 segundos depois de ser inicializado e depois travado:
[ 56.367615] mce: [Hardware Error]: Machine check events logged
[ 70.420914] mce: [Hardware Error]: Machine check events logged
[ 71.886789] Disabling lock debugging due to kernel taint
[ 71.886894] mce: [Hardware Error]: CPU 24: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.887009] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.887122] mce: [Hardware Error]: TSC 206cc7cd362
[ 71.887184] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 11 microcode b00001d
[ 71.887289] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.889392] mce: [Hardware Error]: CPU 30: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.889489] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.889595] mce: [Hardware Error]: TSC 206cc7cd11d
[ 71.889657] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 1d microcode b00001d
[ 71.889760] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.891804] mce: [Hardware Error]: CPU 14: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.891901] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.892007] mce: [Hardware Error]: TSC 206cc7cd10e
[ 71.892068] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 1c microcode b00001d
[ 71.892171] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.894217] mce: [Hardware Error]: CPU 13: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.894314] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.894420] mce: [Hardware Error]: TSC 206cc7cd23c
[ 71.894480] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 1a microcode b00001d
[ 71.894585] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.896634] mce: [Hardware Error]: CPU 29: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.896730] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.896835] mce: [Hardware Error]: TSC 206cc7cd194
[ 71.896896] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 1b microcode b00001d
[ 71.897000] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.899053] mce: [Hardware Error]: CPU 28: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.899150] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.899256] mce: [Hardware Error]: TSC 206cc7cd719
[ 71.899335] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 19 microcode b00001d
[ 71.899438] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.901485] mce: [Hardware Error]: CPU 12: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.901582] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.901687] mce: [Hardware Error]: TSC 206cc7cd720
[ 71.901748] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 18 microcode b00001d
[ 71.901851] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.903934] mce: [Hardware Error]: CPU 10: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.904031] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.904136] mce: [Hardware Error]: TSC 206cc7cd851
[ 71.904197] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 14 microcode b00001d
[ 71.904300] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.906306] mce: [Hardware Error]: CPU 26: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.906403] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.906508] mce: [Hardware Error]: TSC 206cc7cd863
[ 71.906569] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 15 microcode b00001d
[ 71.909482] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.914367] mce: [Hardware Error]: CPU 11: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.917304] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.920287] mce: [Hardware Error]: TSC 206cc7cd515
[ 71.923159] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 16 microcode b00001d
[ 71.926031] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 71.930820] mce: [Hardware Error]: CPU 27: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.933685] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.936557] mce: [Hardware Error]: TSC 206cc7cd449
[ 71.939384] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 17 microcode b00001d
[ 71.944180] mce: [Hardware Error]: CPU 9: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.947059] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.949956] mce: [Hardware Error]: TSC 206cc7cd766
[ 71.952786] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 12 microcode b00001d
[ 71.957580] mce: [Hardware Error]: CPU 25: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.960480] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.963366] mce: [Hardware Error]: TSC 206cc7cd751
[ 71.966210] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 13 microcode b00001d
[ 71.971031] mce: [Hardware Error]: CPU 31: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.973919] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.976817] mce: [Hardware Error]: TSC 206cc7cd7f7
[ 71.979690] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 1f microcode b00001d
[ 71.984474] mce: [Hardware Error]: CPU 15: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 71.987371] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 71.990290] mce: [Hardware Error]: TSC 206cc7cd803
[ 71.993151] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 1e microcode b00001d
[ 71.997992] mce: [Hardware Error]: CPU 8: Machine Check Exception: 5 Bank 20: fa00004000020e0f
[ 72.000918] mce: [Hardware Error]: RIP !INEXACT! 10:<ffffffff8138fb97> {intel_idle+0xd7/0x160}
[ 72.003828] mce: [Hardware Error]: TSC 206cc7cd374
[ 72.006692] mce: [Hardware Error]: PROCESSOR 0:406f1 TIME 1487438906 SOCKET 1 APIC 10 microcode b00001d
[ 72.011533] mce: [Hardware Error]: Machine check: Processor context corrupt
[ 72.014436] Kernel panic - not syncing: Fatal machine check