>>787
kgdb の結果:

(no debugging symbols found)...Attempt to extract a component of a value that is not a structure pointer.
(kgdb) where
#0 0xffffffff802696ad in doadump ()
#1 0xffffffff802696d4 in doadump ()
#2 0x0000000000000004 in ?? ()
#3 0xffffffff80269ce7 in boot ()
#4 0xffffffff805fadc0 in enumerators ()
#5 0xffffffff80458267 in __func__.0 ()
#6 0x000000000000002f in ?? ()
#7 0x000000003ab59a70 in ?? ()
#8 0x0000000000000004 in ?? ()
#9 0xffffff00cf854720 in ?? ()
#10 0x0000000000000104 in ?? ()
#11 0x0000000000000000 in ?? ()
Previous frame identical to this frame (corrupt stack?)

あまり参考にならないかも。