7.0-BETA2 Panic after ifconfig

Robert Watson rwatson at FreeBSD.org
Sun Nov 11 08:46:51 PST 2007

On Fri, 9 Nov 2007, Alexandre Biancalana wrote:

> Yesterday I updated my system from BETA-1 to BETA2 and after that I'm 
> getting the following panic after a simple ifconfig.

If you run this from single-user mode, do you get the same result?  What is 
the general network configuration of the system, and what sorts of services 
are running?

Could you confirm that you aren't using any third party kernel modules or 
modules from ports, or that if you are, they've been update following the 
upgrade to matching source?

Robert N M Watson
Computer Laboratory
University of Cambridge

> Follow the panic and trace....
> # ifconfig bge0 netmask
> panic: Bad list head 0xc444a0c4 first->prev != head
> KDB; enter: panic
> [thread pid 1142 tid 100108 ]
> Stopped at      kdb_enter=0x32:leave
> db>bt
> Tracing pid 1142 tid 100108 td 0xc5c3f840
> kdb_enter(c07499fd,c07c5760,c0730fca,e6fbeaec,6fbeaec,...) at kdb_enter+0x32
> panic(c0730fca,c444a0c4,c074e9942,e6fbeb14,c057abc9,...) at panic+0xc5
> in_ifinit(0,c567d3000,0,0,c0755e1a,...) at in_ifinit+0x15c
> in_control(c5cfe18c, 8040691a,c5c84e40,c448e800,c5c3f840,...) at
> in_control+0xa6a
> ifioctl(c5cfe18c,8040691a,c5c84e40,c5c3f840,c5c3f840,...) at ifioctl+0x3ce
> soo_ioctl(c47406c0,8040691a,c5c84e40,c5411800,c5c3f840,...) at soo-ioctl+0x3a4
> kern_ioctl(c5c3f840,3,8040691a,c5c84e40,0,...) at kern_ioctl+0x243
> ioctl(c5c3f840,e6fbecfc,c,c07722a1,c,...) at ioctl+0x134
> syscall(e6fbed38) at syscall+0x2c4
> Xint0x80_syscall() at Xint0x80_syscall+0x20
> ---syscall (54, FreeBSD ELF32, ioctl), eip = 0x481670f3, esp = 0x bfbfe51c, ebp
> = 0xvfvfe548
> I'm with the machine stopped at db prompt, I can send any other
> information needed to solve this...
> Regards
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