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 4.19-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-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3c83f0bd1781d8184ac1117435a007319b361992
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>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 3ae718aa6b39..1ff5af6c4f3f 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2258,7 +2258,6 @@ 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);
}
@@ -2351,7 +2350,6 @@ 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);
}
@@ -2748,7 +2746,6 @@ 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);
}
