Subject: Data abort fixup panics
To: None <firstname.lastname@example.org>
From: Richard Earnshaw <email@example.com>
Date: 06/05/2001 11:14:06
I've just noticed that the data abort handler fixups for early and late
abort models will panic if given an instruction with write-back that
updates, for example, the PC, or is some other UNPREDICTABLE instruction.
This is bad news, since it means that a user can panic the machine simply
by executing an unpredictable instruction in a way that will fault. We
should raise SIGILL instead of panicing here.