Re: panic: kernel diagnostic assertion "xbd_io->xio_mapped == 0" failed

[Jeff Rizzo <riz%tastylime.net@localhost>]

On 8/4/11 11:03 AM, Manuel Bouyer wrote:
> On Thu, Aug 04, 2011 at 09:49:18AM -0700, Jeff Rizzo wrote:
> > > > line 1589
> > > Looks like something I already tracked down. Could you try the attached patch ?
> > Well, that seems to have stopped the panicing.
> OK, I commited the patch. thanks for testing.

I spoke too soon.  After clearing up my LVM issue, I just got the panic 
several times in a row.  It looks as if it was hidden before because I 
couldn't actually get any domUs booted far enough to trigger it.

panic: kernel diagnostic assertion "xbd_io->xio_mapped == 0" failed: 
file 
"/Users/riz/Documents/code/netbsd/src/sys/arch/xen/xen/xbdback_xenbus.c", line 
1589
cpu0: Begin traceback...
copyright() at ffffffff80983255
cpu0: End traceback...
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff80216a5d cs e030 rflags 246 cr2  
7f7ff7fd3000 cpl 6 rsp ffffa000122a4958
Stopped in pid 0.2 (system) at  netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x28c
kern_assert() at netbsd:kern_assert+0x2d
xbdback_co_flush() at netbsd:xbdback_co_flush+0x167
xbdback_trampoline() at netbsd:xbdback_trampoline+0x49
xbdback_evthandler() at netbsd:xbdback_evthandler+0x28
Xresume_xenev6() at netbsd:Xresume_xenev6+0x53
--- interrupt ---
Xspllower() at netbsd:Xspllower+0xe
idle_loop() at netbsd:idle_loop+0xbf
ds          9048
es          1447
fs          2578
gs          1eb5
rdi         0
rsi         1
rbp         ffffa000122a4958
rbx         ffffa000122a4968
rdx         0
rcx         8
rax         0
r8          ffffffff80bf0ac0    cpu_info_primary
r9          0
r10         ffffa000122a4878
r11         ffffffff806f90e6    xenconscn_putc
r12         104
r13         ffffffff80ad6e88    
__link_set_malloc_types_sym_M_PROP_ARRAY+0x5f6a0

r14         ffffa000007c6000
r15         0
rip         ffffffff80216a5d    breakpoint+0x5
cs          e030
rflags      246
rsp         ffffa000122a4958
ss          e02b
netbsd:breakpoint+0x5:  leave
db>