Subject: kernel protection fault trap while booting on amd64
To: None <current-users@netbsd.org>
From: Kurt Schreiner <ks@ub.uni-mainz.de>
List: current-users
Date: 11/27/2007 15:44:13
Hi,
a kernel compiled to empty obj-dir from current -current crashes
during boot after root fs is found:
boot device: sd0
root on sd0a dumps on sd0b
root file system type: ffs
kernel: protection fault trap, code=0
Stopped in pid 2.1 (sh) at netbsd:fxsave: fxsavel
db{1}> bt
fxsave() at netbsd:fxsave
fpusave_cpu() at netbsd:fpusave_cpu+0x82
fpusave_lwp() at netbsd:fpusave_lwp+0x92
cpu_lwp_fork() at netbsd:cpu_lwp_fork+0x41
lwp_create() at netbsd:lwp_create+0x1c5
fork1() at netbsd:fork1+0x41e
sys___vfork14() at netbsd:sys___vfork14+0x35
syscall() at netbsd:syscall+0x190
db{1}> mach cpu 0
using CPU 0
db{1}> bt
_kernel_lock() at netbsd:_kernel_lock+0xef
DDB lost frame for netbsd:Xsoftclock+0x1a, trying 0xffff80004fa68e10
Xsoftclock() at netbsd:Xsoftclock+0x1a
--- interrupt ---
0x286:
db{1}>
Kurt