Re: kern/47512: netbsd-6 system crash

[Chuck Silvers <chuq%chuq.com@localhost>]

On Tue, Apr 09, 2013 at 09:22:19AM +0100, Nick Hudson wrote:
> On 04/07/13 16:38, Chuck Silvers wrote:
> >(gdb) p cpu_info_primary->ci_next->ci_curlwp->l_name
> >$5 = 0xfffffe8004ffb688 "pgdaemon"
> >
> >I'm not sure how to get a stack trace out of a dump for something
> >that was running on the other CPU.
> 
> kvm proc cpu_info_primary->ci_next->ci_curlwp
> 
> Should do the right thing despite the "proc" vs "lwp" confusion.


doesn't work for me:

(gdb) kvm proc cpu_info_primary->ci_next->ci_curlwp
#0  0xffffffff8084ce20 in ?? ()
(gdb) bt
#0  0xffffffff8084ce20 in ?? ()
#1  0x0000000000000000 in ?? ()
(gdb) i r
rax            *value not available*
rbx            0x7      7
rcx            *value not available*
rdx            *value not available*
rsi            *value not available*
rdi            *value not available*
rbp            0xffffffff8084ce80       0xffffffff8084ce80
rsp            0xffffffff8084cd50       0xffffffff8084cd50
r8             *value not available*
r9             *value not available*
r10            *value not available*
r11            *value not available*
r12            0xfffffe8004a5e040       -1649189461952
r13            0x0      0
r14            0x0      0
r15            0xffffffff801015a1       -2146429535
rip            0xffffffff8084ce20       0xffffffff8084ce20
eflags         *value not available*
cs             *value not available*
ss             *value not available*
ds             *value not available*
es             *value not available*
fs             0x0      0
gs             0x0      0
(gdb) x/i 0xffffffff8084ce20
=> 0xffffffff8084ce20:  add    %al,%fs:(%rax)


(and it's no better with the other dump)


-Chuck