From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: x86@kernel.org, Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
"Steven Rostedt (Red Hat)" <rostedt@goodmis.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: [PATCH -tip 0/2] kprobes: fix bugs by updating blacklist
Date: Wed, 30 Oct 2013 10:53:34 +0000 [thread overview]
Message-ID: <20131030105334.7997.750.stgit@kbuild-fedora.novalocal> (raw)
Recently I've found that putting probes on some functions
could lock or reboot the kernel. These two patches fix
those bugs by prohibiting probing such functions by
adding those to blacklist(kprobes.text).
In both cases, those functions are related to int3 handling
execution path. One is related to irqoff-tracer and the other
is related to notifier debug option.
Thank you,
---
Masami Hiramatsu (2):
[BUGFIX] kprobes/x86: Prohibit probing on debug_stack_*
[BUGFIX] kprobes: Prohibit probing on func_ptr_is_kernel_text
arch/x86/kernel/cpu/common.c | 7 ++++---
kernel/extable.c | 3 ++-
2 files changed, 6 insertions(+), 4 deletions(-)
--
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
next reply other threads:[~2013-10-30 10:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-30 10:53 Masami Hiramatsu [this message]
2013-10-30 10:53 ` [PATCH -tip 1/2] [BUGFIX] kprobes/x86: Prohibit probing on debug_stack_* Masami Hiramatsu
2013-10-31 8:22 ` Ingo Molnar
2013-11-01 2:03 ` Masami Hiramatsu
2013-10-30 10:53 ` [PATCH -tip 2/2] [BUGFIX] kprobes: Prohibit probing on func_ptr_is_kernel_text Masami Hiramatsu
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