On (05/09/19 21:47), Linus Torvalds wrote:
>    [ Sorry about html and mobile crud, I'm not at the computer right now ]
>    How about we just undo the whole misguided probe_kernel_address() thing?

But the problem will remain - %pS/%pF on PPC (and some other arch-s)
do dereference_function_descriptor(), which calls probe_kernel_address().
So if probe_kernel_address() starts to dump_stack(), then we are heading
towards stack overflow. Unless I'm totally missing something.

        -ss

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