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SubjectRe: [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@hitachi.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@hitachi.com>

Reviewed-by: Steven Rostedt <rostedt@goodmis.org>


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