Masami Hiramatsu b4da3340ea tracing/kprobe: bpf: Check error injectable event is on function entry ... Check whether error injectable event is on function entry or not. Currently it checks the event is ftrace-based kprobes or not, but that is wrong. It should check if the event is on the entry of target function. Since error injection will override a function to just return with modified return value, that operation must be done before the target function starts making stackframe. As a side effect, bpf error injection is no need to depend on function-tracer. It can work with sw-breakpoint based kprobe events too. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2018-01-12 17:33:37 -08:00
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asm	tracing/kprobe: bpf: Check error injectable event is on function entry	2018-01-12 17:33:37 -08:00
uapi/asm	Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-12-29 17:02:49 -08:00