| Date | Mon, 5 Jul 2021 10:04:41 +0200 | From | Ingo Molnar <> | Subject | 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@kernel.org> 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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