Re: Panic on dom0 shutdown

[Johan Ihrén <johani%johani.org@localhost>]

Hi,

On Dec 17, 2012, at 12:41 , Hugo Silva wrote:

> It had been a while since I rebooted this machine. It's running netbsd-6
> from about 2.5 weeks ago (i'm in the process of updating it to a more
> recent netbsd-6 now)
> 
> Not sure whether this is reproducible or not:
> ...
> fatal page fault in supervisor mode
> trap type 6 code 0 rip ffffffff80124798 cs e030 rflags 10202 cr2
> ffffa0016d3a30c0 cpl 6 rsp ffffa0016edbf9d0
> Skipping crash dump on recursive panic
> panic: trap
> cpu0: Begin traceback...
> printf_nolog() at netbsd:printf_nolog
> startlwp() at netbsd:startlwp
> alltraps() at netbsd:alltraps+0x9f
> Xresume_xenev6() at netbsd:Xresume_xenev6+0x47
> --- interrupt ---
> Xspllower() at netbsd:Xspllower+0xe
> sleepq_block() at netbsd:sleepq_block+0xc5
> cv_wait() at netbsd:cv_wait+0x91
> rf_RaidIOThread() at netbsd:rf_RaidIOThread+0x159
> cpu0: End traceback...
> wd1: flush cache command didn't complete
> wd0: flush cache command didn't complete
> rebooting...
> (XEN) Domain 0 shutdown: rebooting machine.
> 
> Seems to be related to raidframe? (I have 3 raidframe devices
> configured, if it matters)

I have a (reproducible) panic on shutdown, also recentish NetBSD 6 (kernel form 
december 16), but no raidframe. In my case it only panics on "halt -p", not on 
"halt" (100% reproducible). The trace is similar but not identical (this is by 
hand, no serial console available):

kernel: page fault trap, code=0
Stopped in pid 5800.1 (halt) at netbsd:bus_space_read_4*0x8:
bus_space_read_4()
Xresume_xenev6() at netbsd:Xresume_xenev6+0x47
--- interrupt ---
Xspllower() at netbsd:Xspllower+0xe
wd_standby()
wd_shutdown()
pmf_system_shutdown()
cpu_reboot()
sys_reboot()
syscall()

Slightly different, but also rather similar.

Regards,

Johan