From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Mark Brown <broonie@kernel.org>,
Kalesh Singh <kaleshsingh@google.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Marc Zyngier <maz@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Sandeepa Prabhu <sandeepa.s.prabhu@gmail.com>
Subject: [PATCH v2 0/3] arm64: kprobes: Fix bugs in kprobes for arm64
Date: Fri, 2 Dec 2022 11:18:23 +0900 [thread overview]
Message-ID: <166994750386.439920.1754385804350980158.stgit@devnote3> (raw)
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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next reply other threads:[~2022-12-02 2:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-02 2:18 Masami Hiramatsu (Google) [this message]
2022-12-02 2:18 ` [PATCH v2 1/3] arm64: Prohibit instrumentation on arch_stack_walk() Masami Hiramatsu (Google)
2022-12-02 13:17 ` Mark Rutland
2022-12-06 0:41 ` Masami Hiramatsu
2022-12-09 11:16 ` Mark Rutland
2022-12-11 3:30 ` Masami Hiramatsu
2022-12-02 2:18 ` [PATCH v2 2/3] arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler Masami Hiramatsu (Google)
2022-12-02 2:18 ` [PATCH v2 3/3] arm64: kprobes: Return DBG_HOOK_ERROR if kprobes can not handle a BRK Masami Hiramatsu (Google)
2022-12-05 15:43 ` [PATCH v2 0/3] arm64: kprobes: Fix bugs in kprobes for arm64 Will Deacon
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