From: Steven Rostedt <rostedt@goodmis.org>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>, X86 ML <x86@kernel.org>,
Daniel Xu <dxu@dxuuu.xyz>,
linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
kuba@kernel.org, mingo@redhat.com, ast@kernel.org,
tglx@linutronix.de, kernel-team@fb.com, yhs@fb.com,
Josh Poimboeuf <jpoimboe@redhat.com>,
linux-ia64@vger.kernel.org,
Abhishek Sagar <sagar.abhishek@gmail.com>
Subject: Re: [PATCH -tip v4 12/12] tracing: Show kretprobe unknown indicator only for kretprobe_trampoline
Date: Mon, 22 Mar 2021 11:11:42 -0400 [thread overview]
Message-ID: <20210322111142.748e90da@gandalf.local.home> (raw)
In-Reply-To: <161639532235.895304.18329540036405219298.stgit@devnote2>
On Mon, 22 Mar 2021 15:42:02 +0900
Masami Hiramatsu <mhiramat@kernel.org> wrote:
> ftrace shows "[unknown/kretprobe'd]" indicator all addresses in the
> kretprobe_trampoline, but the modified address by kretprobe should
> be only kretprobe_trampoline+0.
>
> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
-- Steve
WARNING: multiple messages have this Message-ID (diff)
From: Steven Rostedt <rostedt@goodmis.org>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>, X86 ML <x86@kernel.org>,
Daniel Xu <dxu@dxuuu.xyz>,
linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
kuba@kernel.org, mingo@redhat.com, ast@kernel.org,
tglx@linutronix.de, kernel-team@fb.com, yhs@fb.com,
Josh Poimboeuf <jpoimboe@redhat.com>,
linux-ia64@vger.kernel.org,
Abhishek Sagar <sagar.abhishek@gmail.com>
Subject: Re: [PATCH -tip v4 12/12] tracing: Show kretprobe unknown indicator only for kretprobe_trampoline
Date: Mon, 22 Mar 2021 15:11:42 +0000 [thread overview]
Message-ID: <20210322111142.748e90da@gandalf.local.home> (raw)
In-Reply-To: <161639532235.895304.18329540036405219298.stgit@devnote2>
On Mon, 22 Mar 2021 15:42:02 +0900
Masami Hiramatsu <mhiramat@kernel.org> wrote:
> ftrace shows "[unknown/kretprobe'd]" indicator all addresses in the
> kretprobe_trampoline, but the modified address by kretprobe should
> be only kretprobe_trampoline+0.
>
> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
-- Steve
next prev parent reply other threads:[~2021-03-22 15:12 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 6:39 [PATCH -tip v4 00/12] kprobes: Fix stacktrace with kretprobes on x86 Masami Hiramatsu
2021-03-22 6:39 ` Masami Hiramatsu
2021-03-22 6:39 ` [PATCH -tip v4 01/12] ia64: kprobes: Fix to pass correct trampoline address to the handler Masami Hiramatsu
2021-03-22 6:39 ` Masami Hiramatsu
2021-03-22 6:40 ` [PATCH -tip v4 02/12] kprobes: treewide: Replace arch_deref_entry_point() with dereference_function_descriptor() Masami Hiramatsu
2021-03-22 6:40 ` [PATCH -tip v4 02/12] kprobes: treewide: Replace arch_deref_entry_point() with dereference_function_ Masami Hiramatsu
2021-03-22 6:40 ` [PATCH -tip v4 03/12] kprobes: treewide: Remove trampoline_address from kretprobe_trampoline_handler() Masami Hiramatsu
2021-03-22 6:40 ` [PATCH -tip v4 03/12] kprobes: treewide: Remove trampoline_address from kretprobe_trampoline_handler Masami Hiramatsu
2021-03-22 6:40 ` [PATCH -tip v4 04/12] kprobes: Add kretprobe_find_ret_addr() for searching return address Masami Hiramatsu
2021-03-22 6:40 ` Masami Hiramatsu
2021-03-22 6:40 ` [PATCH -tip v4 05/12] x86/kprobes: Add UNWIND_HINT_FUNC on kretprobe_trampoline code Masami Hiramatsu
2021-03-22 6:40 ` Masami Hiramatsu
2021-03-22 6:40 ` [PATCH -tip v4 06/12] ARC: Add instruction_pointer_set() API Masami Hiramatsu
2021-03-22 6:40 ` Masami Hiramatsu
2021-03-22 6:41 ` [PATCH -tip v4 07/12] ia64: " Masami Hiramatsu
2021-03-22 6:41 ` Masami Hiramatsu
2021-03-22 6:41 ` [PATCH -tip v4 08/12] arm: kprobes: Make a space for regs->ARM_pc at kretprobe_trampoline Masami Hiramatsu
2021-03-22 6:41 ` Masami Hiramatsu
2021-03-23 0:04 ` Masami Hiramatsu
2021-03-23 0:04 ` Masami Hiramatsu
2021-03-22 6:41 ` [PATCH -tip v4 09/12] kprobes: Setup instruction pointer in __kretprobe_trampoline_handler Masami Hiramatsu
2021-03-22 6:41 ` Masami Hiramatsu
2021-03-22 6:41 ` [PATCH -tip v4 10/12] x86/kprobes: Push a fake return address at kretprobe_trampoline Masami Hiramatsu
2021-03-22 6:41 ` Masami Hiramatsu
2021-03-23 22:30 ` Peter Zijlstra
2021-03-23 22:30 ` Peter Zijlstra
2021-03-24 1:40 ` Masami Hiramatsu
2021-03-24 1:40 ` Masami Hiramatsu
2021-03-24 16:01 ` Josh Poimboeuf
2021-03-24 16:01 ` Josh Poimboeuf
2021-03-24 23:47 ` Masami Hiramatsu
2021-03-24 23:47 ` Masami Hiramatsu
2021-03-25 0:26 ` Steven Rostedt
2021-03-25 0:26 ` Steven Rostedt
2021-03-25 3:25 ` Masami Hiramatsu
2021-03-25 3:25 ` Masami Hiramatsu
2021-03-25 18:05 ` Masami Hiramatsu
2021-03-25 18:05 ` Masami Hiramatsu
2021-03-26 12:03 ` Masami Hiramatsu
2021-03-26 12:03 ` Masami Hiramatsu
2021-03-26 14:20 ` Steven Rostedt
2021-03-26 14:20 ` Steven Rostedt
2021-03-30 4:58 ` Josh Poimboeuf
2021-03-30 4:58 ` Josh Poimboeuf
2021-03-22 6:41 ` [PATCH -tip v4 11/12] x86/unwind: Recover kretprobe trampoline entry Masami Hiramatsu
2021-03-22 6:41 ` Masami Hiramatsu
2021-03-22 6:42 ` [PATCH -tip v4 12/12] tracing: Show kretprobe unknown indicator only for kretprobe_trampoline Masami Hiramatsu
2021-03-22 6:42 ` Masami Hiramatsu
2021-03-22 15:11 ` Steven Rostedt [this message]
2021-03-22 15:11 ` Steven Rostedt
2021-03-22 23:56 ` Masami Hiramatsu
2021-03-22 23:56 ` Masami Hiramatsu
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