limit_traffic_rate_filter issues

[evely211]

2017/11/28 09:52:35 [alert] 103990#0: shared memory zone "rate" was locked by 49547
2017/11/28 09:52:43 [crit] 49552#0: ngx_slab_alloc() failed: no memory in limit_traffic_rate_filter "rate"
2017/11/28 09:52:43 [alert] 103990#0: worker process 49552 exited on signal 11
2017/11/28 09:52:43 [alert] 103990#0: shared memory zone "rate" was locked by 49552

[haorenfsa]

Hi friend, I believe the problem lies below:
the node here should be change to req
because if you alloc so many nodes for a small share memory, it will run out of free space. and ngx_slab_alloc() fail cause req == NULL, and using req->xxx causing segment fault.
@bigplum is it ?