• Andrea Parri (Microsoft)'s avatar
    Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register() · 3a546958
    Andrea Parri (Microsoft) authored
    Initialize the device's dma_{mask,parms} pointers and the device's
    dma_mask value before invoking device_register().  Address the
    following trace with 5.17-rc7:
    
    [   49.646839] WARNING: CPU: 0 PID: 189 at include/linux/dma-mapping.h:543
    	netvsc_probe+0x37a/0x3a0 [hv_netvsc]
    [   49.646928] Call Trace:
    [   49.646930]  <TASK>
    [   49.646935]  vmbus_probe+0x40/0x60 [hv_vmbus]
    [   49.646942]  really_probe+0x1ce/0x3b0
    [   49.646948]  __driver_probe_device+0x109/0x180
    [   49.646952]  driver_probe_device+0x23/0xa0
    [   49.646955]  __device_attach_driver+0x76/0xe0
    [   49.646958]  ? driver_allows_async_probing+0x50/0x50
    [   49.646961]  bus_for_each_drv+0x84/0xd0
    [   49.646964]  __device_attach+0xed/0x170
    [   49.646967]  device_initial_probe+0x13/0x20
    [   49.646970]  bus_probe_device+0x8f/0xa0
    [   49.646973]  device_add+0x41a/0x8e0
    [   49.646975]  ? hrtimer_init+0x28/0x80
    [   49.646981]  device_register+0x1b/0x20
    [   49.646983]  vmbus_device_register+0x5e/0xf0 [hv_vmbus]
    [   49.646991]  vmbus_add_channel_work+0x12d/0x190 [hv_vmbus]
    [   49.646999]  process_one_work+0x21d/0x3f0
    [   49.647002]  worker_thread+0x4a/0x3b0
    [   49.647005]  ? process_one_work+0x3f0/0x3f0
    [   49.647007]  kthread+0xff/0x130
    [   49.647011]  ? kthread_complete_and_exit+0x20/0x20
    [   49.647015]  ret_from_fork+0x22/0x30
    [   49.647020]  </TASK>
    [   49.647021] ---[ end trace 0000000000000000 ]---
    
    Fixes: 743b237c ("scsi: storvsc: Add Isolation VM support for storvsc driver")
    Signed-off-by: default avatarAndrea Parri (Microsoft) <parri.andrea@gmail.com>
    Reviewed-by: default avatarMichael Kelley <mikelley@microsoft.com>
    Link: https://lore.kernel.org/r/20220315141053.3223-1-parri.andrea@gmail.comSigned-off-by: default avatarWei Liu <wei.liu@kernel.org>
    3a546958
vmbus_drv.c 72.8 KB