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From: Masami Hiramatsu <mhiramat@kernel.org>
To: Ingo Molnar <mingo@redhat.com>, Andrea Righi <righi.andrea@gmail.com>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.vnet.ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
	"David S . Miller" <davem@davemloft.net>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Yonghong Song <yhs@fb.com>, Andy Lutomirski <luto@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@alien8.de>, "H . Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/3] x86/kprobes: Show x86-64 specific blacklisted symbols correctly
Date: Mon, 17 Dec 2018 17:21:24 +0900
Message-ID: <154503488425.26176.17136784384033608516.stgit@devbox> (raw)
In-Reply-To: <154503482486.26176.6224515860220847638.stgit@devbox>

Show x86-64 specific blacklisted symbols in debugfs.
Since x86-64 prohibits probing on symbols which are in
entry text, those should be shown.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 arch/x86/kernel/kprobes/core.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 308bf103cc73..2a291fcb6443 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -1034,6 +1034,12 @@ bool arch_within_kprobe_blacklist(unsigned long addr)
 		 addr < (unsigned long)__entry_text_end);
 }
 
+int __init arch_populate_kprobe_blacklist(void)
+{
+	return kprobe_add_area_blacklist((unsigned long)__entry_text_start,
+					 (unsigned long)__entry_text_end);
+}
+
 int __init arch_init_kprobes(void)
 {
 	return 0;


  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-17  8:20 [PATCH v2 0/3] x86: kprobes: Show correct blaclkist in debugfs Masami Hiramatsu
2018-12-17  8:20 ` [PATCH v2 1/3] kprobes: Blacklist symbols in arch-defined prohibited area Masami Hiramatsu
2018-12-17 18:18   ` [tip:perf/core] " tip-bot for Masami Hiramatsu
2018-12-17  8:21 ` Masami Hiramatsu [this message]
2018-12-17 18:19   ` [tip:perf/core] kprobes/x86: Show x86-64 specific blacklisted symbols correctly tip-bot for Masami Hiramatsu
2018-12-17  8:21 ` [PATCH v2 3/3] x86/kprobes: Remove unneeded arch_within_kprobe_blacklist from x86 Masami Hiramatsu
2018-12-17 18:20   ` [tip:perf/core] kprobes/x86: " tip-bot for Masami Hiramatsu
2018-12-17 15:47 ` [PATCH v2 0/3] x86: kprobes: Show correct blaclkist in debugfs Andrea Righi
2018-12-18  4:50   ` Masami Hiramatsu
2018-12-18 17:24     ` Andrea Righi
2018-12-27 17:09       ` Andrea Righi
2019-01-01 13:16         ` Masami Hiramatsu
2019-01-01 13:37           ` Andrea Righi

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