Re: [PATCH -tip v8 05/26] [BUGFIX] kprobes/x86: Prohibit probing on debug_stack_*

2014-03-21 Thread Steven Rostedt
On Wed, 05 Mar 2014 20:59:18 +0900 Masami Hiramatsu 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

Re: [PATCH -tip v8 05/26] [BUGFIX] kprobes/x86: Prohibit probing on debug_stack_*

2014-03-21 Thread Steven Rostedt
On Wed, 05 Mar 2014 20:59:18 +0900 Masami Hiramatsu masami.hiramatsu...@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.

[PATCH -tip v8 05/26] [BUGFIX] kprobes/x86: Prohibit probing on debug_stack_*

2014-03-05 Thread Masami Hiramatsu
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.

[PATCH -tip v8 05/26] [BUGFIX] kprobes/x86: Prohibit probing on debug_stack_*

2014-03-05 Thread Masami Hiramatsu
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.