kern/89752: [bpf] [patch] bpf_validate() needs to do more checks

Guy Harris guy at alum.mit.edu
Wed Dec 7 17:20:23 PST 2005


The following reply was made to PR kern/89752; it has been noted by GNATS.

From: Guy Harris <guy at alum.mit.edu>
To: Jung-uk Kim <jkim at FreeBSD.org>
Cc: bug-followup at FreeBSD.org
Subject: Re: kern/89752: [bpf] [patch] bpf_validate() needs to do more checks
Date: Wed, 7 Dec 2005 17:15:28 -0800

 On Dec 7, 2005, at 3:37 PM, Jung-uk Kim wrote:
 
 > I found another problem.  BPF_MAXINSNS is tunable in FreeBSD and it is
 > not available to use for others.  If we remove the check also,
 > there's no difference from the previous implementation. :-(
 
 What about the change to ensure that it checks both BPF_LD *and*  
 BPF_LDX, and both BPF_ST *and* BPF_STX?
 


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