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| author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2014-04-17 04:17:12 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-04-24 04:02:57 -0400 |
| commit | 0f46efeb44e360b78f54a968b4d92e6877c35891 (patch) | |
| tree | 967be90bf26a1ec084e476d59e324c456d79f5c1 /arch/x86/kernel/paravirt.c | |
| parent | 376e242429bf8539ef39a080ac113c8799840b13 (diff) | |
kprobes, x86: Prohibit probing on debug_stack_*()
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>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Seiji Aguchi <seiji.aguchi@hds.com>
Link: http://lkml.kernel.org/r/20140417081712.26341.32994.stgit@ltc230.yrl.intra.hitachi.co.jp
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/paravirt.c')
0 files changed, 0 insertions, 0 deletions