Comment on Copy Fail 2: Electric BoogalooparentComments−delamon4moIf you "forget" to mark COW memory pointer as no-write, the net effect would be same, would it not? If I'm reading the diff correctly, the problem was that code missed to mark some pages as shared (aka no-write).−Mindless21124moA fair point...I thought the bug was a missing check for the COW flag, but looking at it again it seems it was missing both setting and checking the flag.−delamon4moApparently it is both...
Comments
If you "forget" to mark COW memory pointer as no-write, the net effect would be same, would it not? If I'm reading the diff correctly, the problem was that code missed to mark some pages as shared (aka no-write).
A fair point...
I thought the bug was a missing check for the COW flag, but looking at it again it seems it was missing both setting and checking the flag.
Apparently it is both...