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Subject: Re: 12.0-ALPHA6 dumps with 'Fatal double fault'
From: Michael Tuexen <tuexen@freebsd.org>
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Date: Thu, 20 Sep 2018 18:15:28 +0200
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To: Michael Schmiedgen <schmiedgen@gmx.net>
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> On 20. Sep 2018, at 17:12, Michael Schmiedgen <schmiedgen@gmx.net> =
wrote:
>=20
>=20
>> Can you elaborate which port was triggering the fault and which =
platform you are using?
>> I would like to reproduce the issue and fix it.
>=20
> Port is devel/apr1 and platform is amd64.
Works fine on my side. It would be helpful if you could build a kernel =
with
debug symbols, reproduce the problem and provide a stack strace.

Since you said that it crashed multiple times makes me wonder if this =
problem
is related to SCTP in particular or if there is some other generic =
issue...

Best regards
Michael
>=20
> CPU: Intel(R) Xeon(R) CPU E31245 @ 3.30GHz (3300.10-MHz K8-class CPU)
>  Origin=3D"GenuineIntel"  Id=3D0x206a7  Family=3D0x6  Model=3D0x2a  =
Stepping=3D7
>  =
Features=3D0xbfebfbff<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=3D0x1fbae3ff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SS=
SE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSX=
SAVE,AVX>
>  AMD Features=3D0x28100800<SYSCALL,NX,RDTSCP,LM>
>  AMD Features2=3D0x1<LAHF>
>  XSAVE Features=3D0x1<XSAVEOPT>
>  VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
>  TSC: P-state invariant, performance statistics
>=20
> It crashed multiple times randomly under heavy load when compiling =
ports. But I
> observed a crash two times exactly in the same place: configure script =
SCTP test
> in devel/apr1.
>=20
> Thanks,
>  Michael