Guangshuo Li wrote:
> devm_kcalloc() may fail. ndtest_probe() allocates three DMA address
> arrays (dcr_dma, label_dma, dimm_dma) and later unconditionally uses
> them in ndtest_nvdimm_init(), which can lead to a NULL pointer
> dereference under low-memory conditions.
>
> Check all three allocations and return -ENOMEM if any allocation fails,
> jumping to the common error path. Do not emit an extra error message
> since the allocator already warns on allocation failure.
>
> Fixes: 9399ab61ad82 ("ndtest: Add dimms to the two buses")
> Cc: [email protected]
> Signed-off-by: Guangshuo Li <[email protected]>
Reviewed-by: Ira Weiny <[email protected]>
[snip]
