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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2015-01-20 16:45:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-25 09:18:00 -0800 |
| commit | 9c3a6f7e476fc4961297fc66b1177f9f8c8dd238 (patch) | |
| tree | 7d6f81136568a5b061b4281d747d16a45ce74a73 /drivers/hv | |
| parent | c3762b248faf9db2b00b36c0535f79758942069e (diff) | |
| download | op-kernel-dev-9c3a6f7e476fc4961297fc66b1177f9f8c8dd238.zip op-kernel-dev-9c3a6f7e476fc4961297fc66b1177f9f8c8dd238.tar.gz | |
Drivers: hv: check vmbus_device_create() return value in vmbus_process_offer()
vmbus_device_create() result is not being checked in vmbus_process_offer() and
it can fail if kzalloc() fails. Add the check and do minor cleanup to avoid
additional duplication of "free_channel(); return;" block.
Reported-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 1d7df25..704c0e0 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -341,11 +341,10 @@ static void vmbus_process_offer(struct work_struct *work) if (channel->sc_creation_callback != NULL) channel->sc_creation_callback(newchannel); - return; + goto out; } - free_channel(newchannel); - return; + goto err_free_chan; } /* @@ -364,6 +363,8 @@ static void vmbus_process_offer(struct work_struct *work) &newchannel->offermsg.offer.if_type, &newchannel->offermsg.offer.if_instance, newchannel); + if (!newchannel->device_obj) + goto err_free_chan; /* * Add the new device to the bus. This will kick off device-driver @@ -379,9 +380,12 @@ static void vmbus_process_offer(struct work_struct *work) list_del(&newchannel->listentry); spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags); kfree(newchannel->device_obj); - - free_channel(newchannel); + goto err_free_chan; } +out: + return; +err_free_chan: + free_channel(newchannel); } enum { |
