null_blk: Zero-initialize read buffers in non-memory-backed mode

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This patch suppresses an uninteresting KMSAN complaint without affecting
performance of the null_blk driver if CONFIG_KMSAN is disabled.

Reported-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Alexander Potapenko <glider@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Bart Van Assche 2020-05-18 21:07:37 -07:00 • committed by Jens Axboe

parent 854b5f01dc

commit cecbc9ce80

1 changed files with 26 additions and 0 deletions

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drivers/block/null_blk_main.c

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