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| author | Sarthak Kukreti <sarthakkukreti@google.com> | 2022-05-31 22:56:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-06 09:48:57 +0300 |
| commit | 417c73db67ea7ad8f03dfd34c6b0bb5f54294fa9 (patch) | |
| tree | c308d145e162206436c792fb650fd3b34a0c344d | |
| parent | ddd5cd42bc5714e926be74b87eb1354b04f9d082 (diff) | |
| download | linux-417c73db67ea7ad8f03dfd34c6b0bb5f54294fa9.tar.xz | |
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>
| -rw-r--r-- | drivers/md/dm-verity-target.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c index 80133aae0db3..d6dbd47492a8 100644 --- a/drivers/md/dm-verity-target.c +++ b/drivers/md/dm-verity-target.c @@ -1312,6 +1312,7 @@ bad: static struct target_type verity_target = { .name = "verity", + .features = DM_TARGET_IMMUTABLE, .version = {1, 8, 0}, .module = THIS_MODULE, .ctr = verity_ctr, |