Date: Tue, 15 Feb 2011 09:46:05 -0800 (PST) From: "Dr. Baud" <drbaud@yahoo.com> To: freebsd-hackers@freebsd.org Subject: spontaneous reboot - ptrace Message-ID: <628608.40948.qm@web120708.mail.ne1.yahoo.com>
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I've an interesting anomaly I'd appreciate some help with.=0A=0AAs a re=
sult of looking at a threading problem I modified gcore =0Ato dump all memo=
ry segments associated with a process;=0Abasically comment out the "Ignore"=
conditional in readmap().=0A The result is that the box spontaneously r=
eboots sometime=0ABetween 40 and 50 seconds into the dump; this is an appli=
cation=0Athat is indeed a memory hog. I commented out the actual=0Awrite to=
disk and the result is the same. I=E2=80=99ve even disabled the=0Awatchdog=
to no avail.=0A=0A This is a vanilla 8.1 install:=0A=0AFreeBSD pollyann=
a 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:36:49 UTC =0A2010=0A =
root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64=0A=0A r=
unning on fairly vanilla hardware:=0A=0ACPU: Intel(R) Xeon(TM) CPU 3.20GHz =
(3212.93-MHz K8-class CPU)=0A Origin =3D "GenuineIntel" Id =3D 0xf49 Fam=
ily =3D f Model =3D 4 Stepping =3D 9=0A Features=3D0xbfebfbff<FPU,VME,DE=
,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C=0AMOV,PAT,PSE36,CLFLUSH,DT=
S,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>=0A Features2=3D0x641d<SSE3,DTES64,=
MON,DS_CPL,CNXT-ID,CX16,xTPR>=0A AMD Features=3D0x20000800<SYSCALL,LM>=0A =
AMD Features2=3D0x1<LAHF>=0A TSC: P-state invariant=0A=0A =0A Any thou=
ghts on how to proceed?=0A =0A Dr.=0A=0A=0A
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