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From: John Baldwin <jhb@FreeBSD.org>
To: alpha@FreeBSD.org
Date: Mon, 19 Apr 2004 11:32:14 -0400
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cc: Kris Kennaway <kris@obsecurity.org>
Subject: Re: Alpha deadlock
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On Saturday 17 April 2004 12:27 am, Kris Kennaway wrote:
> One of the alpha machines has deadlocked; the running process is:
>
> 79102 fffffc001a451680 fffffe0014428000    0 78395 78391 0004000 [CPU 0] cp
>
> which has the following process trace:

Is the interrupt from you entering DDB?

> --- interrupt (from ipl 0) ---
> critical_exit() at critical_exit+0x4c
> _mtx_unlock_spin_flags() at _mtx_unlock_spin_flags+0xe4
> witness_checkorder() at witness_checkorder+0x64c
> _mtx_lock_flags() at _mtx_lock_flags+0x9c
> vm_fault() at vm_fault+0x298
> trap() at trap+0x554
> XentMM() at XentMM+0x2c
> --- memory management fault ---
> bcopy() at bcopy+0x14
> copyin() at copyin+0x38
> uiomove() at uiomove+0x1cc
> ffs_write() at ffs_write+0x4d8
> vn_write() at vn_write+0x2a0
> dofilewrite() at dofilewrite+0x130
> write() at write+0x64
> syscall() at syscall+0x36c
> XentSys() at XentSys+0x64
> --- syscall (4, FreeBSD ELF64, write) ---
> --- user mode ---
> db>

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org