Messages in this thread | | | From | "Masami Hiramatsu (Google)" <> | Subject | [PATCH v2 0/3] arm64: kprobes: Fix bugs in kprobes for arm64 | Date | Fri, 2 Dec 2022 11:18:23 +0900 |
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Hi,
Here is the 2nd version of the kprobe bugfixes on arm64. The previous series is here;
https://lore.kernel.org/all/166990553243.253128.13594802750635478633.stgit@devnote3/T/#u
The first one is a critical issue, which will cause a kernel crach easily with lockdep[1/3]. Others are minor issues and rare cases. The [2/3] let do_page_fault() fixup the page fault in kprobes user handler, and [3/3] is more like code cleanup and returns DBG_HOOK_ERROR if it can not handle kprobe's BRK (but that should not happen.)
In this version I update to use noinstr and __always_inline [1/3] and update comments[3/3]. Also add Mark's Ack (Thanks!)
Thank you,
---
Masami Hiramatsu (Google) (3): arm64: Prohibit instrumentation on arch_stack_walk() arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler arm64: kprobes: Return DBG_HOOK_ERROR if kprobes can not handle a BRK
arch/arm64/kernel/probes/kprobes.c | 86 +++++++++++++++--------------------- arch/arm64/kernel/stacktrace.c | 10 ++-- 2 files changed, 41 insertions(+), 55 deletions(-)
-- Masami Hiramatsu (Google) <mhiramat@kernel.org>
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