On Mon, 19 Aug 2019 22:22:12 +0530 "Naveen N. Rao" wrote:
> > > Jisheng Zhang wrote: > > This patch implements KPROBES_ON_FTRACE for arm64. > > > > ~ # mount -t debugfs debugfs /sys/kernel/debug/ > > ~ # cd /sys/kernel/debug/ > > /sys/kernel/debug # echo 'p _do_fork' > tracing/kprobe_events > > > > before the patch: > > > > /sys/kernel/debug # cat kprobes/list > > ffffff801009ff7c k _do_fork+0x4 [DISABLED] > > This looks wrong -- we should not be allowing kprobe to be registered on Yes. I made a mistake when dumping this log. The kernel isn't as clean as "before the patch". > ftrace address without KPROBES_ON_FTRACE. Is _do_fork+0x4 the location > of ftrace entry on arm64? Indeed, w/o KPROBES_ON_FTRACE, it should be _do_fork+0x0 Thanks
