Date: Mon, 29 Apr 2019 19:13:50 +0000 From: bugzilla-noreply@freebsd.org To: ppc@FreeBSD.org Subject: [Bug 235060] [boot] FreeBSD 12.0 Release DVD and CD will not boot on PowerMac G5 Quad Message-ID: <bug-235060-21-DITha8TtAP@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-235060-21@https.bugs.freebsd.org/bugzilla/> References: <bug-235060-21@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235060 --- Comment #16 from consuli074@gmail.com --- Well, the only thing which is similar to reproducible make a CPU firmware h= ang up (so that it does not boot anything any more until the power cord is removed!) and to reproducible make a copy process hang up, that I know are these old school copy protection of games DVDs in the 2000 era. Some of the= se copy protections also included nasty bit patterns, that hung the copy proce= ss up. As FreeBSD images do not have copy protection, the next best thing that might produce nasty bit patterns is the Intel management engine (or the AMD security processor, resprectively). My overall point is, that this bit patterns most probably are a generell security problem. Especially that those bit patterns might designed to oper= ate some nasty switches in the Minix OS of Intel CPUs. If you FreeBSD guys want= to provide a security OS, you should go after it. At least to the point, how to keep them away from your own iso images. I mean, security is the main reason why people use FreeBSD instead of Linux, isn't it?=20=20=20 If you provided me a tool to search for nasty bit patterns, I will try to assist your search. However, I am not programmer, thus pretty stupid in the= se kind of things, I am afraid. --=20 You are receiving this mail because: You are the assignee for the bug.=
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