lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
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/

Powered by blists - more mailing lists