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Date: Fri, 21 Mar 2014 20:50:32 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>, Fenghua Yu <fenghua.yu@...el.com>, Seiji Aguchi <seiji.aguchi@....com>, Andi Kleen <andi@...stfloor.org>, Ananth N Mavinakayanahalli <ananth@...ibm.com>, Sandeepa Prabhu <sandeepa.prabhu@...aro.org>, Frederic Weisbecker <fweisbec@...il.com>, x86@...nel.org, fche@...hat.com, mingo@...hat.com, systemtap@...rceware.org, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...e.de> Subject: Re: [PATCH -tip v8 05/26] [BUGFIX] kprobes/x86: Prohibit probing on debug_stack_* On Wed, 05 Mar 2014 20:59:18 +0900 Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> wrote: > Prohibit probing on debug_stack_reset and debug_stack_set_zero. > Since the both functions are called from TRACE_IRQS_ON/OFF_DEBUG > macros which run in int3 ist entry, probing it may cause a soft > lockup. > > This happens when the kernel built with CONFIG_DYNAMIC_FTRACE=y > and CONFIG_TRACE_IRQFLAGS=y. > > Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> Reviewed-by: Steven Rostedt <rostedt@...dmis.org> -- 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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