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Date:      Sun, 29 Nov 2015 05:20:33 +0000 (UTC)
From:      Nomad Esst <noname.esst@yahoo.com>
To:        Freebsd Hackers List <freebsd-hackers@freebsd.org>,  FreeBSD Hackers <hackers@freebsd.org>
Subject:   kernel panic in igb driver
Message-ID:  <346084679.550463.1448774433434.JavaMail.yahoo@mail.yahoo.com>
References:  <346084679.550463.1448774433434.JavaMail.yahoo.ref@mail.yahoo.com>

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During some performance tests and while a voice call was going through an i=
gb interface, we attempt to disconnect and connect the cable. After the int=
erface comes up this kernel panic occurs:
Fatal trap 12: page fault while in kernel mode
cpuid =3D 0; apic id =3D 00
fault virtual address=C2=A0=C2=A0 =3D 0xc
fault code=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 =3D supervisor read data, page not present
instruction pointer=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x20:0xffffffff80e189b9
stack pointer=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
=3D 0x28:0xffffff80ba3fe640
frame pointer=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
=3D 0x28:0xffffff80ba3feb20
code segment=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 =3D base 0x0, limit 0xfffff, type 0x1b
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D DPL 0, =
pres 1, long 1, def32 0, gran 1
processor eflags=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D interrupt en=
abled, resume, IOPL =3D 0
current process=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 12 (irq=
268: +)
[ thread pid 12 tid 100114 ]
Stopped at=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 igb_start_locked+0x639:=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 movzbl=C2=A0 0xc(%rbx),%esi
Thanks in advance.





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