Hi,
I am seeing the following panic trying to use PPPoE.
(kgdb) bt
#0 doadump () at pcpu.h:246
#1 0xc085a77e in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:420
#2 0xc085aa52 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:576
#3 0xc04ba317 in db_panic (addr=Could not find the frame base for "db_panic".
) at /usr/src/sys/ddb/db_command.c:478
#4 0xc04ba941 in db_command (last_cmdp=0xc0cf9cdc, cmd_table=0x0, dopager=1)
at /usr/src/sys/ddb/db_command.c:445
#5 0xc04baa9a in db_command_loop () at /usr/src/sys/ddb/db_command.c:498
#6 0xc04bc8fd in db_trap (type=3, code=0) at /usr/src/sys/ddb/db_main.c:229
#7 0xc0889256 in kdb_trap (type=3, code=0, tf=0xc781ab18) at
/usr/src/sys/kern/subr_kdb.c:534
#8 0xc0b182bb in trap (frame=0xc781ab18) at /usr/src/sys/i386/i386/trap.c:685
#9 0xc0afabeb in calltrap () at /usr/src/sys/i386/i386/exception.s:165
#10 0xc08893da in kdb_enter (why=0xc0be3714 "panic", msg=0xc0be3714 "panic") at
cpufunc.h:71
#11 0xc085aa36 in panic (fmt=0xc2718513 "in %s:%d %s()\n vnet=%p curvnet=%p")
at /usr/src/sys/kern/kern_shutdown.c:559
#12 0xc27114c8 in ng_ID2noderef (ID=4) at
/usr/src/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:816
#13 0xc2712202 in ng_address_ID (here=0xc2666380, item=0xc27ade00, ID=4,
retaddr=0) at
/usr/src/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:3547
#14 0xc27a07b0 in ng_ether_rcvmsg (node=0xc2666380, item=0xc27ade00,
lasthook=0x0) at
/usr/src/sys/modules/netgraph/ether/../../../netgraph/ng_ether.c:596
#15 0xc271327d in ng_apply_item (node=0xc2666380, item=0xc27ade00, rw=1) at
/usr/src/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:2417
#16 0xc27146f6 in ngthread (arg=0x0) at
/usr/src/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:3340
#17 0xc08342c8 in fork_exit (callout=0xc2714570 <ngthread>, arg=0x0,
frame=0xc781ad38) at /usr/src/sys/kern/kern_fork.c:830
#18 0xc0afac60 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:270
(kgdb) list ng_base.c:816
811 Node ID handling
812
************************************************************************/
813 static node_p
814 ng_ID2noderef(ng_ID_t ID)
815 {
816 INIT_VNET_NETGRAPH(curvnet);
817 node_p node;
818 mtx_lock(&ng_idhash_mtx);
819 NG_IDHASH_FIND(ID, node);
820 if(node)
(kgdb)
I use the following ppp.conf:
lab# cat /etc/ppp/ppp.conf
pppoe:
set device PPPoE:le1
set authname "x...@xxxx"
set authkey "xxxxxxx"
enable lqr echo
set cd 5
set dial
set login
set redial 0 0
enable dns
add default HISADDR
lab#
To reproduce the panic, you have to use the above ppp.conf,
start ppp(8), and then in the ppp "console" type "open". It
panics very early, that is, you don't need a PPPoE "server"
to reproduce it.
My kernel is GENERIC + VIMAGE - SCTP from a few days old -CURRENT.
Just reporting, Nikos
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