From 9cc71f7dfad52ca8380a482f8b0623e3a6fc8c09 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 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 Reviewed-by: Kees Cook Signed-off-by: Mike Snitzer Signed-off-by: Greg Kroah-Hartman Change-Id: Iae91b853dcddf1194448749d231533602b34bde0 --- 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 c6e3c2d4bd7a..28a7183e5ac8 100644 --- a/drivers/md/dm-verity-target.c +++ b/drivers/md/dm-verity-target.c @@ -1138,6 +1138,7 @@ EXPORT_SYMBOL_GPL(verity_ctr); static struct target_type verity_target = { .name = "verity", .version = {1, 4, 0}, + .features = DM_TARGET_IMMUTABLE, .module = THIS_MODULE, .ctr = verity_ctr, .dtr = verity_dtr,