* Masami Hiramatsu [off-list ref] 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