Messages in this thread | | | From | Masami Hiramatsu <> | Subject | [PATCH -tip 0/4] kprobes: Support __kprobes and NOKPROBE_SYMBOL in modules | Date | Thu, 26 Mar 2020 23:49:23 +0900 |
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Hi,
Here is a series for adding support of __kprobes attribute and NOKPROBE_SYMBOL() macro in modules. With this series, kprobes user can add its handlers and sub-functions to kprobe blacklist so that other kprobes don't probe it.
Note that user should not use both __kprobes and NOKPROBE_SYMBOL() to same function. In that case, the function will appear twice on the blacklist, and that is a waste of memory.
Thomas, it is easy to add ".noinstr.text" support to this series. as same as __kprobes (.kprobes.text) support in [2/4], we can add mod->noinstr_text_start and mod->noinstr_text_size and register it in add_module_kprobe_blacklist().
Thank you,
---
Masami Hiramatsu (4): kprobes: Lock kprobe_mutex while showing kprobe_blacklist kprobes: Support __kprobes blacklist in modules kprobes: Support NOKPROBE_SYMBOL() in modules samples/kprobes: Add __kprobes and NOKPROBE_SYMBOL() for handlers.
include/linux/module.h | 6 +++ kernel/kprobes.c | 67 ++++++++++++++++++++++++++++++++++- kernel/module.c | 7 ++++ samples/kprobes/kprobe_example.c | 6 ++- samples/kprobes/kretprobe_example.c | 2 + 5 files changed, 85 insertions(+), 3 deletions(-)
-- Masami Hiramatsu (Linaro) <mhiramat@kernel.org>
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