Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH] Introduce compat_u64 and compat_s64 types | Date | Fri, 15 Jun 2007 15:27:44 +0200 |
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> And debug simulators that can be made to trap such accesses, and in most > cases processors which fault such an access (so you find it) but don't > provide enough information to restart. > > The testing isn't that hard for a given embedded system and having done > work Linux does not need other changes re-breaking things.
Hopefully everybody who deploys these systems knows this. It seems like a open death trap to me, especially since the consequences are so severe: remote packet of death, could be a recall for a network conntected embedded device that doesn't easily allow firmware update. And they would rightfully blame Linux.
It would be much safer if the parts of the stack that weren't audited/tested were marked this way and check for BROKEN_UNALIGNED or similar.
Also frankly I'm surprised that whoever designed these systems didn't learn from the old M68000 who made this mistake the first time.
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