Re: [PATCH -tip v8 08/13] arm: kprobes: Make a space for regs->ARM_pc at kretprobe_trampoline

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* Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote:

> Change kretprobe_trampoline to make a space for regs->ARM_pc so that
> kretprobe_trampoline_handler can call instruction_pointer_set()
> safely.

The idiom is "make space", but in any case, what does this mean?

Was the stack frame set up in kretprobe_trampoline() and calling 
trampoline_handler() buggy?

If yes, then explain the bad effects of the bug, and make all of this clear 
in the title & changelog.

Thanks,

	Ingo



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