kern/84133:

[Gabor Kovesdan]

>Number:         84133
>Category:       kern
>Synopsis:       
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jul 26 16:30:23 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Gabor Kovesdan
>Release:        FreeBSD 6.0-BETA1 amd64
>Organization:
n/a
>Environment:
System: FreeBSD dream 6.0-BETA1 FreeBSD 6.0-BETA1 #0: Sun Jul 24 13:54:28 CEST 2005 root at dream:/usr/src/sys/amd64/compile/DREAM amd64

>Description:

I had a kernel panic on FreeBSD 6.0-BETA1/amd64. I've copied the
tarce output of the kernel debugger, but unfortunately I don't have a
crash dump, because I issued a ps command at the debugger prompt, and
the debugger crashed, thus I couldn't type the panic command.
Here's what we have:

Fatal trap 9: general protection fault while in kernel mode
instruction pointer	=0x8:0xffffffff802bbc2b
stack pointer		=0x10:0xffffffff968e1fa0
frame pointer		=0x10:0xffffffff968e1fb0
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		=931 (fetch)
[ thread pid 931 tid 100090 ]
Stopped at m_xhalf+0x3b:

db> trace
Tracing pid 931 tid 100090 td 0xffffff00114d1500
m_xhalf() at m_xhalf+0x3b
bpf_filter() at bpf_filter+0x49f
bpf_mtap() at bpf_mtap+0xcc
nve_ifstart() at nve_ifstart+0x1fa
ether_output_frame() at ether_output_frame+0x249
ip_output() at ip_output+0xb17
tcp_output() at tcp_output+0x9c2
tcp_usr_rcvd() at tcp_usr_rcvd+0x70
soreceive() at soreceive+0x1009
soo_read() at soo_read+0xc0
dofileread() at dofileread+0x94
kern_readr() at kern_readr+0x60
read() at read+0x4a
syscall() at syscall+0x4b2
Xfast_syscall() at Xfast_syscall+0xa8
--- syscall (3, FreeBSD ELF64, read), rip = 0x800b0984c,
rsp = 0x7fffffffe428, rbp = 0x400 ---

My kernel config file is available at:
http://tux.t-hosting.hu/DREAM

>How-To-Repeat:
Don't know. I was making install the x11/gnome2 port when it happened.

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: