On Sun, Mar 18, 2018 at 10:53:02PM +0800, Jia-Ju Bai wrote: > hv_pci_onchannelcallback() is not called in atomic context. > > The call chain ending up at hv_pci_onchannelcallback() is: > [1] hv_pci_onchannelcallback() <- hv_pci_probe() > hv_pci_probe() is only set as ".probe" in hv_driver > structure "hv_pci_drv". > Your static analysis tool is faulty and apparently so is Smatch. $ smdb function_ptrs hv_pci_onchannelcallback Says it can't find a caller. When I look for function pointers I get: $ smdb function_ptr hv_pci_onchannelcallback hv_pci_onchannelcallback = 'hv_pci_onchannelcallback' , 'vmbus_open param 5' , '(struct vmbus_channel)->onchannel_callback' , '__read_once_size param 0' Anyway the call tree is: vmbus_chan_sched() <-- takes rcu_read_lock(); -> vmbus_channel_isr() -> channel->onchannel_callback() -> which is hv_pci_onchannelcallback() regards, dan carpenter
