From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
To: Timo Juhani Lindfors <timo.lindfors@iki.fi>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Pavel Emelyanov <xemul@parallels.com>,
Jiri Kosina <jkosina@suse.cz>,
Nadia Yvette Chambers <nyc@holomorphy.com>,
yrl.pp-manager.tt@hitachi.com,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH -tip ] [BUGFIX] kprobes: Move hash_64() into .text.kprobe section
Date: Wed, 13 Mar 2013 22:46:49 +0900 [thread overview]
Message-ID: <51408349.8080800@hitachi.com> (raw)
In-Reply-To: <847glb8m4i.fsf@sauna.l.org>
(2013/03/13 22:28), Timo Juhani Lindfors wrote:
> Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> writes:
>> OK, then I'll update it to just use __always_inline.
>
> I get a similar case of infinite recursion if I try to kprobe
> "inat_get_opcode_attribute":
Oops, right! And this is caused by below callchain
set_current_kprobes->is_IF_modifier->skip_prefixes
->inat_get_opcode_attribute
However, this looks very wired that the copied instruction
(ainsn->insn) is analyzed at every probe hit.
I think we should add a bit flag indicating IF modifier
to the ainsn.
Thank you for reporting!!
--
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
next prev parent reply other threads:[~2013-03-13 13:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-11 14:22 Masami Hiramatsu
2013-03-12 4:35 ` Ananth N Mavinakayanahalli
2013-03-12 8:16 ` Ingo Molnar
2013-03-12 11:03 ` Masami Hiramatsu
2013-03-12 8:21 ` Ingo Molnar
2013-03-12 11:07 ` Masami Hiramatsu
2013-03-12 12:09 ` Ingo Molnar
2013-03-12 16:04 ` Linus Torvalds
2013-03-13 6:58 ` Masami Hiramatsu
2013-03-13 13:28 ` Timo Juhani Lindfors
2013-03-13 13:46 ` Masami Hiramatsu [this message]
2013-03-18 20:57 ` Timo Juhani Lindfors
2013-03-19 2:53 ` Masami Hiramatsu
2013-03-21 11:39 ` Ingo Molnar
2013-03-21 13:23 ` Masami Hiramatsu
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