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Date: Mon, 24 Mar 2014 10:48:02 +0900 From: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> To: Steven Rostedt <rostedt@...dmis.org> Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>, Andi Kleen <andi@...stfloor.org>, Ananth N Mavinakayanahalli <ananth@...ibm.com>, Peter Zijlstra <peterz@...radead.org>, Frederic Weisbecker <fweisbec@...il.com>, x86@...nel.org, Sandeepa Prabhu <sandeepa.prabhu@...aro.org>, fche@...hat.com, mingo@...hat.com, Al Viro <viro@...iv.linux.org.uk>, systemtap@...rceware.org, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, Seiji Aguchi <seiji.aguchi@....com> Subject: Re: [PATCH -tip v8 03/26] kprobes: Prohibit probing on .entry.text code (2014/03/22 7:04), Steven Rostedt wrote: > On Wed, 05 Mar 2014 20:59:04 +0900 > Masami Hiramatsu <masami.hiramatsu.pt@...achi.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. I saw mcount(and ftrace_caller) in arch/x86/kernel/entry_*.S, and almost all code in it are in ".entry.text" section as far as I can see, or do I miss something? Thank you, -- Masami HIRAMATSU IT Management Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu.pt@...achi.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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