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Date: Mon, 27 Oct 2003 18:59:48 -0800
From: David Schultz <das@FreeBSD.ORG>
To: "Florian C. Smeets" <flo@kasimir.com>
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cc: current@FreeBSD.ORG
Subject: Re: vm_map.c LOR
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On Sat, Sep 27, 2003, Florian C. Smeets wrote:
> Hey guys,
> 
> got this one with today's current:
> 
> lock order reversal
>  1st 0xc28008ac vm object (vm object) @ /space/src/sys/vm/vm_map.c:2195
>  2nd 0xc082f110 system map (system map) @ /space/src/sys/vm/vm_kern.c:328
> Stack backtrace:
> backtrace(c037b3b0,c082f110,c0390c85,c0390c85,c0390b1a) at backtrace+0x17
> witness_lock(c082f110,8,c0390b1a,148,0) at witness_lock+0x672
> _mtx_lock_flags(c082f110,0,c0390b1a,148,3) at _mtx_lock_flags+0xba
> _vm_map_lock(c082f0b0,c0390b1a,148,c03dcfe0,2b4) at _vm_map_lock+0x36
> kmem_malloc(c082f0b0,1000,101,cf083b18,c030c587) at kmem_malloc+0x3a
[...]

This is a false positive.