From: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
To: "Anil S Keshavamurthy" <anil.s.keshavamurthy@intel.com>,
"Borislav Petkov" <bp@alien8.de>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"David S. Miller" <davem@davemloft.net>,
"H. Peter Anvin" <hpa@zytor.com>,
"Jisheng Zhang" <Jisheng.Zhang@synaptics.com>,
"Masami\
Hiramatsu" <mhiramat@kernel.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Will Deacon" <will@kernel.org>
Cc: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>
Subject: Re: [PATCH 4/4] arm64: implement KPROBES_ON_FTRACE
Date: Mon, 19 Aug 2019 22:22:12 +0530 [thread overview]
Message-ID: <1566232996.v8nlwmnjqa.naveen@linux.ibm.com> (raw)
In-Reply-To: <20190819192706.46ce2c1d@xhacker.debian>
Jisheng Zhang wrote:
> This patch implements KPROBES_ON_FTRACE for arm64.
>
> ~ # mount -t debugfs debugfs /sys/kernel/debug/
> ~ # cd /sys/kernel/debug/
> /sys/kernel/debug # echo 'p _do_fork' > tracing/kprobe_events
>
> before the patch:
>
> /sys/kernel/debug # cat kprobes/list
> ffffff801009ff7c k _do_fork+0x4 [DISABLED]
This looks wrong -- we should not be allowing kprobe to be registered on
ftrace address without KPROBES_ON_FTRACE. Is _do_fork+0x4 the location
of ftrace entry on arm64?
- Naveen
next prev parent reply other threads:[~2019-08-19 16:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-19 11:35 [PATCH 0/4] arm64: KPROBES_ON_FTRACE Jisheng Zhang
2019-08-19 11:36 ` [PATCH 1/4] kprobes: adjust kprobe addr for KPROBES_ON_FTRACE Jisheng Zhang
2019-08-19 16:43 ` Naveen N. Rao
2019-08-20 1:51 ` Jisheng Zhang
2019-08-20 0:01 ` Masami Hiramatsu
2019-08-20 2:05 ` Jisheng Zhang
2019-08-19 11:36 ` [PATCH 2/4] kprobes/x86: use instruction_pointer and instruction_pointer_set Jisheng Zhang
2019-08-20 0:09 ` Masami Hiramatsu
2019-08-19 11:37 ` [PATCH 3/4] kprobes: move kprobe_ftrace_handler() from x86 and make it weak Jisheng Zhang
2019-08-20 0:07 ` Masami Hiramatsu
2019-08-20 1:56 ` Jisheng Zhang
2019-08-19 11:38 ` [PATCH 4/4] arm64: implement KPROBES_ON_FTRACE Jisheng Zhang
2019-08-19 16:52 ` Naveen N. Rao [this message]
2019-08-20 2:16 ` Jisheng Zhang
2019-08-19 12:53 ` [PATCH 0/4] arm64: KPROBES_ON_FTRACE Mark Rutland
2019-08-19 13:10 ` Masami Hiramatsu
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