kern/155658: [amr] [patch] amr_ioctl(): call of malloc() causes memory corruption and panic

[Andreas Longwitz]

The following reply was made to PR kern/155658; it has been noted by GNATS.

From: Andreas Longwitz <longwitz at incore.de>
To: Scott Long <scott4long at yahoo.com>
Cc: bug-followup at freebsd.org, John Baldwin <jhb at freebsd.org>
Subject: Re: kern/155658: [amr] [patch] amr_ioctl(): call of malloc() causes
 memory corruption and panic
Date: Fri, 20 Apr 2012 17:20:53 +0200

 > Worst firmware ever.  Seriously.
 Agree, but I run three dozen servers with amr controllers of four
 different types and all behave equal. Without source and/or docs I can
 not decide what is firmware and/or megarc error. I must live with this
 situation and I am happy, that this is the only corner in my FreeBSD
 world that is not "open".
 
 >> Ah, ok.  I think we should just make the minimum buffer size 32k which
 >> should workaround this.  I've updated the patch at the same URL:
 >>
 >> http://www.freebsd.org/~jhb/patches/amr_buffer_len.patch
 >>
 >> -- 
 >> John Baldwin
 
 I have tested the updated patch, for me it is ok.
 
 Thanks you all for investigating in this problem.
 
 Andreas Longwitz