On Thu, Jan 16, 2020 at 06:47:06PM +0900, Masami Ichikawa wrote: > When trace_clock option is not set and unstable clcok detected, > tracing_set_default_clock() sets trace_clock(ThinkPad A285 is one of > case). In that case, if lockdown is in effect, null pointer > dereference error happens in ring_buffer_set_clock(). > > Link: https://bugzilla.redhat.com/show_bug.cgi?id=1788488 > Signed-off-by: Masami Ichikawa <masami256@xxxxxxxxx> > --- > kernel/trace/trace.c | 5 +++++ > 1 file changed, 5 insertions(+) <formletter> This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html for how to do this properly. </formletter>