ifconfig panics system

Wesley Morgan morganw at chemikals.org
Fri Jan 30 16:20:57 PST 2004

On Fri, 30 Jan 2004, Wesley Morgan wrote:

> Soeren's latest ATA commits have allowed my system to boot, but now a
> freshly built kernel/world panic immediately upon use of "ifconfig", with
> or without arguments. No dump available yet because the ATA code seems to
> barf when trying to dump, and the trace didn't stay in the kernel message
> buffer for next reboot. More info when I have it! *prepares pointy hat*

Update... Only occurrs if INET6 is NOT present in kernel configuration.
Here is the trace/panic:

-sh-2.05b# ifconfig

Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0xff00ff00
fault code		= supervisor read, page not present
instruction pointer	= 0x8:0xc056a179
stack pointer	        = 0x10:0xd7aa7b08
frame pointer	        = 0x10:0xd7aa7b2c
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 55 (ifconfig)
trap number		= 12
panic: page fault
at line 821 in file ../../../i386/i386/trap.c
Stack backtrace:
backtrace(c064dc50,c0696d20,335,c065cfcd,100) at backtrace+0x17
__panic(c065cfcd,335,c064395a,c065cc49,1) at __panic+0xd4
trap_fatal(d7aa7ac8,ff00ff00,1,0,c3ebe000) at trap_fatal+0x346
trap_pfault(d7aa7ac8,0,ff00ff00,d7aa7ad4,0) at trap_pfault+0x252
trap(18,c0670010,10,0,4) at trap+0x29a
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc056a179, esp = 0xd7aa7b08, ebp = 0xd7aa7b2c ---
rt_msg2(e,d7aa7b48,0,d7aa7b9c,0) at rt_msg2+0x89
sysctl_iflist(0,d7aa7b9c,c132e8d0,d6000,98) at sysctl_iflist+0x7a
sysctl_rtsock(c0679b00,d7aa7cb4,4,d7aa7c10,d7aa7c10) at sysctl_rtsock+0x209
sysctl_root(0,d7aa7cac,6,d7aa7c10,c3ebe000) at sysctl_root+0x13a
userland_sysctl(c3ebe000,d7aa7cac,6,0,bfbfedf0) at userland_sysctl+0x14a
__sysctl(c3ebe000,d7aa7d14,18,280d26c8,6) at __sysctl+0xd4
syscall(2f,2f,2f,0,bfbfedf0) at syscall+0x320
Xint0x80_syscall() at Xint0x80_syscall+0x1d
--- syscall (202), eip = 0x280d26cf, esp = 0xbfbfed6c, ebp = 0xbfbfed98 ---

syncing disks, buffers remaining... 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23
giving up on 22 buffers
Uptime: 8m52s
Shutting down ACPI
Automatic reboot in 15 seconds - press a key on the console to abort
--> Press a key on the console to reboot,
--> or switch off the system now.

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