Hi Rabin, The patch looks fine to me -- forwarding to the trace.c maintainer Jie Fei directly for his ACK. Thanks, Dave ----- Original Message ----- > From: Rabin Vincent <rabinv(a)axis.com&gt; > > This max buffer is not available in all configurations of the kernel so > we shouldn't attempt to use the unitialized max_tr_ring_buffer variable. > A similar check existed previously before the recent rework of the trace > extension to support multiple buffers. > --- > extensions/trace.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/extensions/trace.c b/extensions/trace.c > index 51df98d..22039a9 100644 > --- a/extensions/trace.c > +++ b/extensions/trace.c > @@ -487,6 +487,9 @@ static int ftrace_init_trace(struct trace_instance *ti, > ulong instance_addr) > ti->pages) < 0) > goto out_fail; > > + if (!ti->max_tr_ring_buffer) > + return 0; > + > ti->max_tr_buffers = calloc(sizeof(*ti->max_tr_buffers), nr_cpu_ids); > if (ti->max_tr_buffers == NULL) > goto out_fail; > -- > 2.1.4 > > -- > Crash-utility mailing list > Crash-utility(a)redhat.com > https://www.redhat.com/mailman/listinfo/crash-utility >