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Groups > linux.kernel > #1480705
| From | SF Markus Elfring <elfring@users.sourceforge.net> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 01/13] DRBD-receiver: Use kmalloc_array() in receive_uuids() |
| Date | 2016-09-10 22:30 +0200 |
| Message-ID | <sfX4t-4Pv-21@gated-at.bofh.it> (permalink) |
| References | <sfX4t-4Pv-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 10 Sep 2016 19:22:57 +0200
* A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
* Replace the specification of a data type by a pointer dereference
to make the corresponding size determination a bit safer according to
the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/block/drbd/drbd_receiver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 942384f..3be9fbf 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -4186,7 +4186,7 @@ static int receive_uuids(struct drbd_connection *connection, struct packet_info
return config_unknown_volume(connection, pi);
device = peer_device->device;
- p_uuid = kmalloc(sizeof(u64)*UI_EXTENDED_SIZE, GFP_NOIO);
+ p_uuid = kmalloc_array(UI_EXTENDED_SIZE, sizeof(*p_uuid), GFP_NOIO);
if (!p_uuid) {
drbd_err(device, "kmalloc of p_uuid failed\n");
return false;
--
2.10.0
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[PATCH 00/13] DRBD-receiver: Fine-tuning for six function implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:30 +0200 [PATCH 01/13] DRBD-receiver: Use kmalloc_array() in receive_uuids() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:30 +0200 [PATCH 06/13] DRBD-receiver: Improve a size determination in receive_sizes() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:30 +0200 [PATCH 03/13] DRBD-receiver: Move an assignment in receive_uuids() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:30 +0200 [PATCH 10/13] DRBD-receiver: Delete error messages for failed resource allocations in receive_SyncParam() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:40 +0200 [PATCH 08/13] DRBD-receiver: Move an assignment in receive_sizes() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:40 +0200 [PATCH 13/13] DRBD-receiver: Improve determination of sizes in receive_Barrier() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:40 +0200 [PATCH 09/13] DRBD-receiver: Improve determination of sizes in receive_SyncParam() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:40 +0200 [PATCH 12/13] DRBD-receiver: Delete error messages for failed resource allocations in receive_protocol() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:40 +0200 [PATCH 11/13] DRBD-receiver: Improve a size determination in receive_protocol() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:40 +0200 [PATCH 07/13] DRBD-receiver: Delete an error message for a failed kzalloc() call in receive_sizes() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-09-10 22:40 +0200
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