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linux/drivers/md/dm.c
Mike Snitzer 647a20d5ca dm: do not reuse dm_blk_ioctl block_device input as local variable 
(Ab)using the @bdev passed to dm_blk_ioctl() opens the potential for
targets' .prepare_ioctl to fail if they go on to check the bdev for
!NULL.

Fixes: e56f81e0b0 ("dm: refactor ioctl handling")
Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-11-17 14:18:49 -05:00

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