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authorMasami Hiramatsu <mhiramat@kernel.org>2017-09-19 19:00:19 +0900
committerIngo Molnar <mingo@kernel.org>2017-09-28 09:23:04 +0200
commite863d5396146411b615231cae0c518cb2a23371c (patch)
tree5e687c4220dfce99482755fe51bfeb2102287044 /init
parentcd52edad55fbcd8064877a77d31445b2fb4b85c3 (diff)
downloadop-kernel-dev-e863d5396146411b615231cae0c518cb2a23371c.zip
op-kernel-dev-e863d5396146411b615231cae0c518cb2a23371c.tar.gz
kprobes: Warn if optprobe handler tries to change execution path
Warn if optprobe handler tries to change execution path. As described in Documentation/kprobes.txt, with optprobe user handler can not change instruction pointer. In that case user must avoid optimizing the kprobes by setting post_handler or break_handler. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexei Starovoitov <ast@fb.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/150581521955.32348.3615624715034787365.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init')
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