From: Masami Hiramatsu <mhiramat@kernel.org>
To: Ingo Molnar <mingo@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
peterz@infradead.org,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Andrea Righi <righi.andrea@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>
Subject: [PATCH v2 1/9] x86/kprobes: Prohibit probing on optprobe template code
Date: Sat, 12 Jan 2019 11:26:09 +0900 [thread overview]
Message-ID: <154725996885.18060.7107278512876517981.stgit@devbox> (raw)
In-Reply-To: <154725993986.18060.2759150647140353514.stgit@devbox>
Prohibit probing on optprobe template code, since it is not
a code but a template instruction sequence. If we modify
this template, copied template must be broken.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: 9326638cbee2 ("kprobes, x86: Use NOKPROBE_SYMBOL() instead of __kprobes annotation")
Cc: stable@vger.kernel.org
---
arch/x86/kernel/kprobes/opt.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
index 6adf6e6c2933..544bd41a514c 100644
--- a/arch/x86/kernel/kprobes/opt.c
+++ b/arch/x86/kernel/kprobes/opt.c
@@ -141,6 +141,11 @@ asm (
void optprobe_template_func(void);
STACK_FRAME_NON_STANDARD(optprobe_template_func);
+NOKPROBE_SYMBOL(optprobe_template_func);
+NOKPROBE_SYMBOL(optprobe_template_entry);
+NOKPROBE_SYMBOL(optprobe_template_val);
+NOKPROBE_SYMBOL(optprobe_template_call);
+NOKPROBE_SYMBOL(optprobe_template_end);
#define TMPL_MOVE_IDX \
((long)optprobe_template_val - (long)optprobe_template_entry)
next prev parent reply other threads:[~2019-01-12 2:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-12 2:25 [PATCH v2 0/9] kprobes: Fix and improve blacklist symbols Masami Hiramatsu
2019-01-12 2:26 ` Masami Hiramatsu [this message]
2019-01-12 2:26 ` [PATCH v2 2/9] x86/kprobes: Move trampoline code into RODATA Masami Hiramatsu
2019-01-12 2:27 ` [PATCH v2 3/9] x86/kprobes: Prohibit probing on functions before kprobe_int3_handler() Masami Hiramatsu
2019-01-12 2:27 ` [PATCH v2 4/9] x86/kprobes: Prohibit probing on IRQ handlers directly Masami Hiramatsu
2019-01-12 2:28 ` [PATCH v2 5/9] kprobes: Search non-suffixed symbol in blacklist Masami Hiramatsu
2019-01-14 16:16 ` Steven Rostedt
2019-01-12 2:28 ` [PATCH v2 6/9] kprobes: Prohibit probing on hardirq tracers Masami Hiramatsu
2019-01-12 2:28 ` [PATCH v2 7/9] kprobes: Prohibit probing on preempt_check debug functions Masami Hiramatsu
2019-01-12 2:29 ` [PATCH v2 8/9] kprobes: Prohibit probing on RCU debug routine Masami Hiramatsu
2019-01-12 2:29 ` [PATCH v2 9/9] kprobes: Prohibit probing on lockdep functions Masami Hiramatsu
2019-01-12 13:33 ` [PATCH v2 0/9] kprobes: Fix and improve blacklist symbols Andrea Righi
2019-01-13 14:23 ` Masami Hiramatsu
2019-01-14 16:18 ` Steven Rostedt
2019-02-01 13:31 ` Masami Hiramatsu
2019-02-11 13:50 ` Ingo Molnar
2019-02-12 16:48 ` Masami Hiramatsu
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