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SubjectRe: copy_from_user() fix
> > Thats a matter for glibc. If you wrap the glibc syscall macros to do
> > a raise(SIGSEGV) then you get your desire. So its a non kernel item ;)
> Still, I think that this could be in kernel. It is faster to do here
> (you can SIGSEGV it directly from pagefault handler), and IMO you
> _should_ get SIGSEGV for read(0,0,1)...

Since when has SIGSEGV on a memory error been performance critical ?

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