Re: CURRENT freezes on Laitude D520

On Mon, 11 Dec 2006, Robert Watson wrote:
> On Mon, 11 Dec 2006, Tai-hwa Liang wrote:
>>> the kernel with KDB, DDB, and BREAK_TO_DEBUGGER, and user a serial or 
>>> firewire console.  If the hang occurs, see if you can get into the 
>>> debugger, in which case the logged output from DDB for the following 
>>> commands would be very useful:
>>> 
>>> show pcpu
>>> show allpcpu
>>> trace
>>> alltrace
>>> ps
>>> show locks
>>> show alllocks
>>> show lockedvnods
>>> show uma
>>> show malloc
>>> 
>>> Please open a PR that describes your configuration, includes your kernel 
>>> config (since it seems quite customized), any loader.conf settings, a 
>>> detailed description of the problem, and the output.  I'd be quite 
>>> interested
>>
>>  Okay, I'll file a PR once I can collect more information with the serial 
>> console(probably weekend).  For now our system administrator is pretty 
>> nervous about my suggestion on turning debug.mpsafenet back to 1. ;)
>
> Thanks.

   Okay, I filed the collected data as kern/106805.  Looks to me that the
lockup does related to the WITNESS warning I've observed.

db> trace
Tracing pid 924 tid 100042 td 0xc653e480
kdb_enter(c0685297) at kdb_enter+0x2b
siointr1(c6539400,c071fec0,0,c06850a1,56e,...) at siointr1+0xce
siointr(c6539400) at siointr+0x21
intr_execute_handlers(c63ea4c8,e6c308d0,4,e6c30920,c0621693,...) at
intr_execute_handlers+0xe1
lapic_handle_intr(38) at lapic_handle_intr+0x2e
Xapic_isr1() at Xapic_isr1+0x33
--- interrupt, eip = 0xc04edf41, esp = 0xe6c30914, ebp = 0xe6c30920 ---
_mtx_lock_sleep(c698ce80,c653e480,0,c698a1b6,18f2) at _mtx_lock_sleep+0x115
_mtx_lock_flags(c698ce80,0,c698a1b6,18f2,c698ce80,...) at _mtx_lock_flags+0xa2
pf_test(2,c64bb800,e6c30a78,0,c755d000,...) at pf_test+0x81
pf_check_out(0,e6c30a78,c64bb800,2,c755d000) at pf_check_out+0x3d
pfil_run_hooks(c071a420,e6c30af4,c64bb800,2,c755d000,...) at pfil_run_hooks+0xc9
ip_output(c687d700,0,e6c30ac0,0,0,c755d000) at ip_output+0x83a
tcp_output(c7558740) at tcp_output+0xe0d
tcp_disconnect(c7558740) at tcp_disconnect+0xe0
tcp_usr_disconnect(c72776f4,e6c30bf0,c0531e2c,c72776f4,c6edf480,...) at tcp_usr_disconnect+0x6b
sodisconnect(c72776f4) at sodisconnect+0x26
soclose(c72776f4) at soclose+0x48
soo_close(c6edf480,c653e480) at soo_close+0x4b
fdrop_locked(c6edf480,c653e480,c63d5084,0,c0667839,...) at fdrop_locked+0x88
fdrop(c6edf480,c653e480,6ac,c06d02e0,0,...) at fdrop+0x24
closef(c6edf480,c653e480,0,0,39,...) at closef+0x367
close(c653e480,e6c30d04) at close+0x1a6
syscall(3b,3b,3b,0,39,...) at syscall+0x22f
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (6, FreeBSD ELF32, close), eip = 0x2830e9af, esp = 0xbfbe88dc, ebp = 0xbfbe88f8 ---

-- 
Cheers,

Tai-hwa Liang