Ingo, I tested and verified that the commends that Masami has shown will crash the system. These patches do fix the problem. I also verified that the same commands will crash 2.6.39 and have included stable in the Cc of the commits. -- Steve Please pull the latest tip/perf/urgent tree, which can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git tip/perf/urgent Head SHA1: 44a56040a0037a845d5fa218dffde464579f0cab Masami Hiramatsu (2): ftrace/kprobes: Fix not to delete probes if in use perf probe: Fix to show correct error string ---- kernel/trace/trace_kprobe.c | 58 ++++++++++++++++++++++++++++++++++------ tools/perf/util/probe-event.c | 4 ++- 2 files changed, 52 insertions(+), 10 deletions(-)