Re: Mac Mini panic

[Peter Grehan <grehan_(_at_)_freebsd_(_dot_)_org>]

Hi Sean,

> ad0: timeout waiting to issue command
> ad0: error issueing WRITE_MUL command
> ad0: timeout waiting to issue command
> ad0: error issueing WRITE_MUL command
> ad0: timeout waiting to issue command
> ad0: error issueing WRITE_MUL command
> ad0: timeout waiting to issue command
> ad0: error issueing WRITE_MUL command
> swap_pager: I/O error - pageout failed: blkno xxxxx, size 65536, error 5
> swap_pager: I/O error - pageout failed: blkno xxxxx, size 65536, error 5
> swap_pager: I/O error - pageout failed: blkno xxxxx, size 65536, error 5
> swap_pager: I/O error - pageout failed: blkno xxxxx, size 65536, error 5
> g_vfs_done():ad0s5[WRITE(offset=6160384, length=2048)]error = 5
> init died (signal 4, exit 0)
> panic: Going nowhere without my init!
> KDB: enter: panic
> [thread pid 1 tid 100006 ]
> Stopped at       0x25b5f8:    lwz    r11, r1, 0x0
> db>
>
> What next?  Can I even do a dump if the ata driver is the culprit?

 'trace' will give the backtrace, but I'm guessing what has happened is 
that part of init was being swapped out and failed, killing init, and 
hitting the panic in the exit syscall where it detects if init is the 
process exiting.

 No kernel dumps yet. 'man ddb' when the system is running normally 
will give a list of commands that can be issued to the debugger, as well 
as '?' at the prompt itself.

 About the only advice I can give is see if you can reproduce this each 
time with the xfce package build. That then allows some more debug to be 
put in.

later,

Peter.


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