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(parent: 5bbbfdf) | patch
dm: do not reuse dm_blk_ioctl block_device input as local variable
authorMike Snitzer <snitzer@redhat.com>
Tue, 17 Nov 2015 19:11:34 +0000 (14:11 -0500)
committerMike Snitzer <snitzer@redhat.com>
Tue, 17 Nov 2015 19:18:49 +0000 (14:18 -0500)
commit647a20d5cad7477033bc021ec9dd75edf4bbf9a0
tree459ab91e5d61c98a2607f5414af593d46705eaa0tree | snapshot
parent5bbbfdf685657771fda05b926b28ca0f79163a28commit | diff
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>
drivers/md/dm.c diff | blob | history
Linux kernel for KaRo TX COM modules