Other Developers on Core 2 Bugs

My previous entry about Theo de Raadt’s comments on the level of severity of bugs in Intel’s Core 2 processors needs a little update. Linus Torvalds brushes off the alarm and says it’s nothing new. Matt Dillon of Dragonfly BSD isn’t as nonplussed as Torvalds by the errata disclosure in his quick run through of the list.

Notably, he says, “AE3 scares the hell out of me, and for the others AE5, AE8, AE21, and AE30 look serious.” He wrote in his bug-by-bug list:

AE3 – POPF/POPFD that sets the trap flag (aka when single-stepping a program) may cause unpredictable behavior. Holy shit. This one is serious.

He was a little less concerned about the other four, noting in the case of AE5 (memory aliasing with inconsistent dirty and access bits may cause a processor deadlock) how DragonflyBSD and FreeBSD (safely) handle access bits.

Advertisements

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: