This is a note to let you know that I've just added the patch titled drbd: remove call to memset before free device/resource/connection to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drbd-remove-call-to-memset-before-free-device-resour.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 115d5909432aa926d8994cd09e701c5e04b6e756 Author: Wang ShaoBo <bobo.shaobowang@xxxxxxxxxx> Date: Thu Nov 24 09:58:16 2022 +0800 drbd: remove call to memset before free device/resource/connection [ Upstream commit 6e7b854e4c1b02dba00760dfa79d8dbf6cce561e ] This revert c2258ffc56f2 ("drbd: poison free'd device, resource and connection structs"), add memset is odd here for debugging, there are some methods to accurately show what happened, such as kdump. Signed-off-by: Wang ShaoBo <bobo.shaobowang@xxxxxxxxxx> Link: https://lore.kernel.org/r/20221124015817.2729789-2-bobo.shaobowang@xxxxxxxxxx Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Stable-dep-of: 8692814b77ca ("drbd: destroy workqueue when drbd device was freed") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index f4e38c208b9f..be819f80884f 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -2244,7 +2244,6 @@ void drbd_destroy_device(struct kref *kref) kref_put(&peer_device->connection->kref, drbd_destroy_connection); kfree(peer_device); } - memset(device, 0xfd, sizeof(*device)); kfree(device); kref_put(&resource->kref, drbd_destroy_resource); } @@ -2336,7 +2335,6 @@ void drbd_destroy_resource(struct kref *kref) idr_destroy(&resource->devices); free_cpumask_var(resource->cpu_mask); kfree(resource->name); - memset(resource, 0xf2, sizeof(*resource)); kfree(resource); } @@ -2677,7 +2675,6 @@ void drbd_destroy_connection(struct kref *kref) drbd_free_socket(&connection->data); kfree(connection->int_dig_in); kfree(connection->int_dig_vv); - memset(connection, 0xfc, sizeof(*connection)); kfree(connection); kref_put(&resource->kref, drbd_destroy_resource); }