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Re: [PATCH -tip v8 03/26] kprobes: Prohibit probing on .entry.text code
- From: Steven Rostedt <rostedt at goodmis dot org>
- To: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>
- Cc: linux-kernel at vger dot kernel dot org, Ingo Molnar <mingo at kernel dot org>, Andi Kleen <andi at firstfloor dot org>, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, Peter Zijlstra <peterz at infradead dot org>, Frederic Weisbecker <fweisbec at gmail dot com>, x86 at kernel dot org, Sandeepa Prabhu <sandeepa dot prabhu at linaro dot org>, fche at redhat dot com, mingo at redhat dot com, Al Viro <viro at zeniv dot linux dot org dot uk>, systemtap at sourceware dot org, "H. Peter Anvin" <hpa at zytor dot com>, Thomas Gleixner <tglx at linutronix dot de>, Seiji Aguchi <seiji dot aguchi at hds dot com>
- Date: Fri, 21 Mar 2014 18:04:00 -0400
- Subject: Re: [PATCH -tip v8 03/26] kprobes: Prohibit probing on .entry.text code
- Authentication-results: sourceware.org; auth=none
- References: <20140305115843 dot 22766 dot 8355 dot stgit at ltc230 dot yrl dot intra dot hitachi dot co dot jp> <20140305115904 dot 22766 dot 57607 dot stgit at ltc230 dot yrl dot intra dot hitachi dot co dot jp>
On Wed, 05 Mar 2014 20:59:04 +0900
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> wrote:
> struct kprobe_insn_cache {
> struct mutex mutex;
> diff --git a/kernel/kprobes.c b/kernel/kprobes.c
> index ceeadfc..5b5ac76 100644
> --- a/kernel/kprobes.c
> +++ b/kernel/kprobes.c
> @@ -96,9 +96,6 @@ static raw_spinlock_t *kretprobe_table_lock_ptr(unsigned long hash)
> static struct kprobe_blackpoint kprobe_blacklist[] = {
> {"preempt_schedule",},
> {"native_get_debugreg",},
> - {"irq_entries_start",},
> - {"common_interrupt",},
> - {"mcount",}, /* mcount can be called from everywhere */
Is mcount in the entry.text section? Also, what about ftrace_caller and
friends.
-- Steve