null_blk: mem garbage on NUMA systems during init
For NUMA systems, initializing the blk-mq layer and using per node hctx. We initialize submit queues to 1, while blk-mq nr_hw_queues is initialized to the number of NUMA nodes. This makes the null_init_hctx function overwrite memory outside of what it allocated. In my case it lead to writing garbage into struct request_queue's mq_map. Signed-off-by:Matias Bjorling <m@bjorling.me> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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a26ba7fa
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