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

Hi monochrome,

back to keyboard, it tried newest CURRENT (r365920) on my box and even
with newest sources the error occurs.

After looking around somewhat more, I found some hints about Virtualbox
kernel module having problems with r365488. Unfortunately, I am not able
to find the thread again :(

What seems to help as a workaround is to disable the loading of
VirtualBox in /boot/loader.conf

#vboxdrv_load="YES"

and in /etc/rc.conf

#vboxnet_enable="YES"
#vboxguest_enable="YES"


So probably, this page fault is not restricted to AMD Ryzen?

HTH,
Rainer


Am 20.09.20 um 08:04 schrieb monochrome:
> 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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