6.0BETA3 panic in ip_output (vlan/RIP related?)

Yar Tikhiy yar at comp.chem.msu.su
Wed Aug 31 13:49:36 GMT 2005


On Wed, Aug 31, 2005 at 12:24:45PM +0100, Gavin Atkinson wrote:
> 
> I've just managed to panic an amd64 machine running 6.0BETA3.
> 
> wiggum# ifconfig vlan76 destroy
> wiggum# Aug 31 12:02:48 wiggum routed[244]: IP_DROP_MEMBERSHIP ALLHOSTS: Can't assign requested address
> wiggum#
> wiggum# ifconfig vlan76 create
> wiggum# ifconfig vlan76 vlan 76 vlandev bge0
> wiggum# ifconfig vlan76 inet x.y.76.59 netmask 255.255.254.0
> 
> 
> Fatal trap 9: general protection fault while in kernel mode
> cpuid = 0; apic id = 00
> instruction pointer     = 0x8:0xffffffff80429420
> stack pointer           = 0x10:0xffffffffb260b600
> frame pointer           = 0x10:0xffffffffb260b710
> 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         = 244 (routed)

Thanks for reporting this!  The problem seems known and has
to do with a deficiency in our multicast code WRT interface
removal/re-insertion.  It is on the to-do list of our networking
gurus and hopefully will be dealt with RSN, after IP multicast
code locking and cleanup are complete.

-- 
Yar


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