Hello Dennis Zhou,
This is a semi-automatic email about new static checker warnings.
The patch df95e795a722: "percpu: add tracepoint support for percpu
memory" from Jun 19, 2017, leads to the following Smatch complaint:
mm/percpu-km.c:88 pcpu_destroy_chunk()
warn: variable dereferenced before check 'chunk' (see line 86)
mm/percpu-km.c
85 pcpu_stats_chunk_dealloc();
86 trace_percpu_destroy_chunk(chunk->base_addr);
^^^^^^^^^^^^^^^^
There should probably be a NULL check here?
87
88 if (chunk && chunk->data)
89 __free_pages(chunk->data, order_base_2(nr_pages));
90 pcpu_free_chunk(chunk);
regards,
dan carpenter
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