Comment # 1 on bug 1145050 from Mian Yousaf Kaukab

CPU-feature complains about unexpected variations. This could be the root cause
for the crash:

[    0.112442] CPU features: SANITY CHECK: Unexpected variation in SYS_CTR_EL0.
Boot CPU: 0x0000008444c004, CPU1: 0x0000009444c004
[    0.112451] CPU features: SANITY CHECK: Unexpected variation in
SYS_ID_AA64DFR0_EL1. Boot CPU: 0x00000010305106, CPU1: 0x00000010305116
[    0.112466] CPU features: SANITY CHECK: Unexpected variation in
SYS_ID_DFR0_EL1. Boot CPU: 0x00000003010066, CPU1: 0x00000003001066
[    0.112477] CPU features: Unsupported CPU feature variation detected.
[    0.112522] CPU1: Booted secondary processor 0x0000000000 [0x4e0f0030]
[    0.113340] Detected PIPT I-cache on CPU2
[    0.113351] CPU features: SANITY CHECK: Unexpected variation in SYS_CTR_EL0.
Boot CPU: 0x0000008444c004, CPU2: 0x0000009444c004
[    0.113360] CPU features: SANITY CHECK: Unexpected variation in
SYS_ID_AA64DFR0_EL1. Boot CPU: 0x00000010305106, CPU2: 0x00000010305116
[    0.113372] CPU features: SANITY CHECK: Unexpected variation in
SYS_ID_DFR0_EL1. Boot CPU: 0x00000003010066, CPU2: 0x00000003001066