tree 459ab91e5d61c98a2607f5414af593d46705eaa0
parent 5bbbfdf685657771fda05b926b28ca0f79163a28
author Mike Snitzer <snitzer@redhat.com> 1447787494 -0500
committer Mike Snitzer <snitzer@redhat.com> 1447787929 -0500

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: e56f81e0b01e ("dm: refactor ioctl handling")
Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>