Re: r323412: Panic on boot (slab->us_keg == keg)

On 11.09.2017 15:23, Andrey V. Elsukov wrote:
> --- trap 0xc, rip = 0xffffffff80d84870, rsp = 0xffffffff82193970, rbp =
> 0xffffffff821939b0 ---
> zone_import() at zone_import+0x110/frame 0xffffffff821939b0
> zone_alloc_item() at zone_alloc_item+0x36/frame 0xffffffff821939f0
> uma_startup() at uma_startup+0x1d0/frame 0xffffffff82193ae0
> vm_page_startup() at vm_page_startup+0x34e/frame 0xffffffff82193b30
> vm_mem_init() at vm_mem_init+0x1a/frame 0xffffffff82193b50
> mi_startup() at mi_startup+0x9c/frame 0xffffffff82193b70
> btext() at btext+0x2c
> Uptime: 1s

I bisected revisions, and the last working is r322988.
This machine is E5-2660 v4_at_ based.

CPU: Intel(R) Xeon(R) CPU E5-2660 v4_at_ 2.00GHz (2000.04-MHz K8-class CPU)
  Origin="GenuineIntel"  Id=0x406f1  Family=0x6  Model=0x4f  Stepping=1

Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>

Features2=0x7ffefbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
  AMD Features2=0x121<LAHF,ABM,Prefetch>
  Structured Extended
Features=0x21cbfbb<FSGSBASE,TSCADJ,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,PQM,NFPUSG,PQE,RDSEED,ADX,SMAP,PROCTRACE>
  XSAVE Features=0x1<XSAVEOPT>
  VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID,VID,PostIntr
  TSC: P-state invariant, performance statistics
real memory  = 68719476736 (65536 MB)
avail memory = 66562076672 (63478 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <SUPERM SMCI--MB>
FreeBSD/SMP: Multiprocessor System Detected: 56 CPUs
FreeBSD/SMP: 2 package(s) x 14 core(s) x 2 hardware threads


Also I determined that it can successfully boot with disabled
hyper-threading.

-- 
WBR, Andrey V. Elsukov