Re: Crash with vnd

[Martti Kuparinen <martti.kuparinen%iki.fi@localhost>]

Manuel Bouyer wrote:
> On Sat, Apr 09, 2005 at 08:06:50AM +0300, Martti Kuparinen wrote:
>
> > Even though I can "sync" from the DDB just fine (and accordind to
> > the messages on the screen everything was successfully dumped) the
> > savecore utility can't find any crashdump in the swap...
>
>
> Can you use the xen kernel from
> ftp://ftp.netbsd.org/pub/NetBSD/arch/xen/xen20/xen205-loadksym.gz
> and, when this happens again, type 'tr' in ddb before sync ?
> xen205-loadksym.gz is a xen205 kernel with YAMAMOTO Takashi's patch to
> load the kernel symbols.

I renamed my dom0 kernel to /netbsd and tried again. DDB dumps all
128 MB according to the screen messages but savecore does not find
anything.

(copied manually from the screen)

stopped at pid 309.1 (python2.3) at netbsd:db_read_bytes+0x3b movl 0 
(%ecx),%eax

tr

db_read_bytes(0,4,cae93cd0,0,8) at netbsd_db_read_bytes+0x3b
db_get_value(0,4,0,0,c060f9a0) at netbsd:db_get_value+0x18
db_stack_trace_print(0,0,ffff,c0574d76,c031e740) at 
netbsd:db_stack_trace_print+0x2e4
ddb_trap_hook(1,1,cae93ddc,c0310d9e,0) at netbsd:ddb_trap_hook+0x98
db_trap(6,0,cae93e0c,c02fb967,c0b89000) at netbsd:db_trap+0x18
kdb_trap(6,0,cae93efc,2106,1) at netbsd:kdb_trap+0x119
trap() at netbsd:trap+0xab
--- trap (number 6) ---
?(1b,caeb3fa4,c9be9130,0,caeb3fa0) at 0
do_hypervisor_callback(caeb3fa4,0,85d001f,bfa0001f) at 
netbsd:do_hypervisor_callback+0xa1