From owner-freebsd-bugs@freebsd.org  Mon Nov  9 11:06:44 2015
Return-Path: <owner-freebsd-bugs@freebsd.org>
Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 19C3DA29EDB
 for <freebsd-bugs@mailman.ysv.freebsd.org>;
 Mon,  9 Nov 2015 11:06:44 +0000 (UTC)
 (envelope-from bugzilla-noreply@freebsd.org)
Received: from kenobi.freebsd.org (kenobi.freebsd.org
 [IPv6:2001:1900:2254:206a::16:76])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 0485E1C78
 for <freebsd-bugs@FreeBSD.org>; Mon,  9 Nov 2015 11:06:44 +0000 (UTC)
 (envelope-from bugzilla-noreply@freebsd.org)
Received: from bugs.freebsd.org ([127.0.1.118])
 by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id tA9B6hFm064858
 for <freebsd-bugs@FreeBSD.org>; Mon, 9 Nov 2015 11:06:43 GMT
 (envelope-from bugzilla-noreply@freebsd.org)
From: bugzilla-noreply@freebsd.org
To: freebsd-bugs@FreeBSD.org
Subject: [Bug 176748] [libi386] [patch] BTX Loader i386 incorrectly probes
 EDD, possibly resulting division by zero
Date: Mon, 09 Nov 2015 11:06:44 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: unspecified
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Only Me
X-Bugzilla-Who: ardovm@yahoo.it
X-Bugzilla-Status: In Progress
X-Bugzilla-Priority: Normal
X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-176748-8-tXucP78gGq@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-176748-8@https.bugs.freebsd.org/bugzilla/>
References: <bug-176748-8@https.bugs.freebsd.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs/>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 09 Nov 2015 11:06:44 -0000

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=176748

--- Comment #3 from Arrigo Marchiori <ardovm@yahoo.it> ---
Hello,

after some investigation, I could confirm that yes, the BIOS is broken.
However, the vendor of the embedded PC's I am using, is still applying the old
and broken BIOS to recent units.

I only upgraded the FreeBSD sources last week, and the patch seems not to be
effective any more, when booting from (recent) USB pen drives. For some weird
reasons, the sector size of such USB sticks is returned as 12022 bytes or
something like that, that is not correct.

Would it be advisable to add some more safety checks, such as:
  - sectors must be non-zero;
  - sector_size must be non-zero;
  - sector_size must be a multiple of 512?

Such a check enables my terminals to boot again.

-- 
You are receiving this mail because:
You are the assignee for the bug.