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 <jasow...@redhat.com> Signed-off-by: Vitaly Kuznetsov <vkuzn...@redhat.com> --- drivers/hv/channel_mgmt.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 2c59f03..80590c6 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 error; } /* @@ -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 error; /* * 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 error; } +out: + return; +error: + free_channel(newchannel); } enum { -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/