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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-10-08 02:39:56 +0400 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-10-14 23:55:19 +0400 |
| commit | 7e44c0b56b07a5e34de9943cfb2fee72e71a9f0e (patch) | |
| tree | b7b30a9d709f439423bb13ed07868d61ae546258 /drivers/firewire/core-cdev.c | |
| parent | eaf76e0d027a917a013ad8a88a94132d0feab622 (diff) | |
| download | linux-7e44c0b56b07a5e34de9943cfb2fee72e71a9f0e.tar.xz | |
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.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index ced186d7e9a9..0516acd55ab9 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) |