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authorStefan Richter <stefanr@s5r6.in-berlin.de>2009-10-08 00:39:56 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2009-10-14 21:55:19 +0200
commit7e44c0b56b07a5e34de9943cfb2fee72e71a9f0e (patch)
treeb7b30a9d709f439423bb13ed07868d61ae546258 /drivers/firewire/core-cdev.c
parenteaf76e0d027a917a013ad8a88a94132d0feab622 (diff)
firewire: cdev: fix memory leak in an error path
If copy_from_user in an FW_CDEV_IOC_SEND_RESPONSE ioctl failed, an inbound_transaction_resource instance is no longer referenced and needs to be freed. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/core-cdev.c')
-rw-r--r--drivers/firewire/core-cdev.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index ced186d7e9a..0516acd55ab 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -698,6 +698,7 @@ static int ioctl_send_response(struct client *client, void *buffer)
struct fw_cdev_send_response *request = buffer;
struct client_resource *resource;
struct inbound_transaction_resource *r;
+ int ret = 0;
if (release_client_resource(client, request->handle,
release_request, &resource) < 0)
@@ -707,13 +708,17 @@ static int ioctl_send_response(struct client *client, void *buffer)
resource);
if (request->length < r->length)
r->length = request->length;
- if (copy_from_user(r->data, u64_to_uptr(request->data), r->length))
- return -EFAULT;
+
+ if (copy_from_user(r->data, u64_to_uptr(request->data), r->length)) {
+ ret = -EFAULT;
+ goto out;
+ }
fw_send_response(client->device->card, r->request, request->rcode);
+ out:
kfree(r);
- return 0;
+ return ret;
}
static int ioctl_initiate_bus_reset(struct client *client, void *buffer)