From 3362a41556217b6c7077ea81b7366b550bf1e9bc Mon Sep 17 00:00:00 2001 From: Sarthak Kukreti Date: Tue, 31 May 2022 15:56:40 -0400 Subject: [PATCH] dm verity: set DM_TARGET_IMMUTABLE feature flag 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: 9c12e4f577b4 ("dm: add verity target") Cc: stable@vger.kernel.org Signed-off-by: Sarthak Kukreti Reviewed-by: Kees Cook Signed-off-by: Mike Snitzer --- drivers/md/dm-verity-target.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c index 80133aae0db37..d6dbd47492a85 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, -- 2.39.5