Re: [patch 5/5] Apply the PG_sensitive flag to the CryptoAPIsubsystem

[Alan Cox]

> > Also, there's no discussion about long-lived threads keeping 
> > sensitive information in there kernel stack indefinitely.
> 
> kernel stack clearing isn't hard to do, just do it on every syscall exit
> and in the infinite loop for kernel threads.

Actually that is probably not as important. In most cases you would be
leaking data between syscalls made by the same thread. 

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