tree b9de7be6563cfcb7cf1a6f1c36dd27798285419e
parent 6adce527fe86f0156ea853742c951c01b1f0d6fc
author Sarthak Kukreti <sarthakkukreti@google.com> 1654027000 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1654496386 +0200

dm verity: set DM_TARGET_IMMUTABLE feature flag

commit 4caae58406f8ceb741603eee460d79bacca9b1b5 upstream.

The device-mapper framework provides a mechanism to mark targets as
immutable (and hence fail table reloads that try to change the target
type). Add the DM_TARGET_IMMUTABLE flag to the dm-verity target's
feature flags to prevent switching the verity target with a different
target type.

Fixes: a4ffc152198e ("dm: add verity target")
Cc: stable@vger.kernel.org
Signed-off-by: Sarthak Kukreti <sarthakkukreti@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>