Re: Fwd: Re: r365488 page faults on AMD Ryzen 9 3950X

Hi, 
I am AFK until Sunday, so can't investigate ATM. 
And no, I haven't solved it until now. Thanks for your report.
Rainer

Am 18. September 2020 00:38:31 MESZ schrieb monochrome <monochrome_at_twcny.rr.com>:
>
>forgot you
>
>-------- Forwarded Message --------
>Subject: Re: r365488 page faults on AMD Ryzen 9 3950X
>Date: Thu, 17 Sep 2020 17:03:49 -0400
>From: monochrome <monochrome_at_twcny.rr.com>
>To: freebsd-current_at_freebsd.org
>
>I am also having this problem. Have you resolved it? Mine is a Ryzen 5 2400G
>
>On 9/12/20 5:22 AM, Rainer Hurling wrote:
>> Since r365488 (and above until recent) my box breaks with the following
>> error when starting:
>> 
>> Fatal trap 12: page fault while in kernel mode
>> cpuid = 31; apic id = 1f
>> fault virtual address   = 0x0
>> fault code              = supervisor read data, page not present
>> instruction pointer     = 0x20:0xffffffff808f452b
>> stack pointer           = 0x28:0xffffffff81711800
>> frame pointer           = 0x28:0xffffffff81711800
>> code segment            = base 0x0, limit 0xfffff, type 0x1b
>>                          = DPL 0, pres 1, long 1, def32 0, gran 1
>> processor eflags        = interrupt enabled, resume, IOPL = 0
>> current process         = 0 (swapper)
>> trap number             = 12
>> panic: page fault
>> cpuid = 31
>> time = 1
>> 
>> 
>> 
>> Some infos about the system, the page fault occurs:
>> 
>> CPU: AMD Ryzen 9 3950X 16-Core Processor             (3493.50-MHz
>> K8-class CPU)
>>    Origin="AuthenticAMD"  Id=0x870f10  Family=0x17  Model=0x71  Stepping=0
>> Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
>> Features2=0x7ed8320b<SSE3,PCLMULQDQ,MON,SSSE3,FMA,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
>>    AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
>>    AMD
>> Features2=0x75c237ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,SKINIT,WDT,TCE,Topology,PCXC,PNXC,DBE,PL2I,MWAITX,ADMSKX>
>>    Structured Extended
>> Features=0x219c91a9<FSGSBASE,BMI1,AVX2,SMEP,BMI2,PQM,PQE,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,SHA>
>>    Structured Extended Features2=0x400004<UMIP,RDPID>
>>    XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
>>    AMD Extended Feature Extensions ID
>> EBX=0x108b657<CLZERO,IRPerf,XSaveErPtr,RDPRU,WBNOINVD,IBPB,STIBP,SSBD>
>>    SVM: (disabled in BIOS) NP,NRIP,VClean,AFlush,DAssist,NAsids=32768
>>    TSC: P-state invariant, performance statistics
>> real memory  = 68717379584 (65534 MB)
>> avail memory = 66756149248 (63663 MB)
>> Event timer "LAPIC" quality 600
>> 
>> 
>> #cat /etc/sysctl.conf
>> security.bsd.map_at_zero=1
>> kern.module_path=/boot/kernel;/boot/modules;/usr/local/modules
>> kern.evdev.rcpt_mask=6
>> kern.maxfiles=49312
>> kern.ipc.shm_allow_removed=1
>> kern.ipc.maxsockbuf=16777216
>> vfs.usermount=1
>> net.inet.tcp.rfc1323=1
>> net.inet.tcp.sack.enable=1
>> net.inet.tcp.sendbuf_auto=1
>> net.inet.tcp.recvbuf_auto=1
>> net.inet.tcp.sendbuf_max=16777216
>> net.inet.tcp.recvbuf_max=16777216
>> net.inet6.ip6.use_tempaddr=1
>> net.inet6.ip6.prefer_tempaddr=1
>> net.local.stream.recvspace=65536
>> net.local.stream.sendspace=65536
>> 
>> 
>> Please let me know, if I should provide more info or test something.
>> Thanks in advance,
>> Rainer
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