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

I have confirmed that r365487 is the last kernel that will boot on my 
2400G. These are the files changed between r365487 and r365488:

U    sys/vm/phys_pager.c
U    sys/vm/vm_object.c
U    sys/vm/vm_object.h
U    sys/vm/vm_pager.h



On 9/18/20 8:57 AM, Rainer Hurling wrote:
> 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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