* [PATCH v2] Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register()
@ 2022-03-15 14:10 Andrea Parri (Microsoft)
2022-03-15 16:46 ` Michael Kelley (LINUX)
0 siblings, 1 reply; 3+ messages in thread
From: Andrea Parri (Microsoft) @ 2022-03-15 14:10 UTC (permalink / raw)
To: KY Srinivasan, Haiyang Zhang, Stephen Hemminger, Wei Liu,
Dexuan Cui, Tianyu Lan, Michael Kelley, Long Li
Cc: linux-hyperv, linux-kernel, Andrea Parri (Microsoft)
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: 743b237c3a7b0 ("scsi: storvsc: Add Isolation VM support for storvsc driver")
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
---
Changes since v1[1]:
- Move dma_set_mask() as well (Michael)
[1] https://lkml.kernel.org/r/20220311133738.38649-1-parri.andrea@gmail.com
drivers/hv/vmbus_drv.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 12a2b37e87f30..0a05e10ab36c7 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2097,6 +2097,10 @@ int vmbus_device_register(struct hv_device *child_device_obj)
child_device_obj->device.parent = &hv_acpi_dev->dev;
child_device_obj->device.release = vmbus_device_release;
+ child_device_obj->device.dma_parms = &child_device_obj->dma_parms;
+ child_device_obj->device.dma_mask = &child_device_obj->dma_mask;
+ dma_set_mask(&child_device_obj->device, DMA_BIT_MASK(64));
+
/*
* Register with the LDM. This will kick off the driver/device
* binding...which will eventually call vmbus_match() and vmbus_probe()
@@ -2122,9 +2126,6 @@ int vmbus_device_register(struct hv_device *child_device_obj)
}
hv_debug_add_dev_dir(child_device_obj);
- child_device_obj->device.dma_parms = &child_device_obj->dma_parms;
- child_device_obj->device.dma_mask = &child_device_obj->dma_mask;
- dma_set_mask(&child_device_obj->device, DMA_BIT_MASK(64));
return 0;
err_kset_unregister:
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* RE: [PATCH v2] Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register()
2022-03-15 14:10 [PATCH v2] Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register() Andrea Parri (Microsoft)
@ 2022-03-15 16:46 ` Michael Kelley (LINUX)
2022-03-29 12:03 ` Wei Liu
0 siblings, 1 reply; 3+ messages in thread
From: Michael Kelley (LINUX) @ 2022-03-15 16:46 UTC (permalink / raw)
To: Andrea Parri (Microsoft),
KY Srinivasan, Haiyang Zhang, Stephen Hemminger, Wei Liu,
Dexuan Cui, Tianyu Lan, Long Li
Cc: linux-hyperv, linux-kernel
From: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Sent: Tuesday, March 15, 2022 7:11 AM
>
> 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: 743b237c3a7b0 ("scsi: storvsc: Add Isolation VM support for storvsc driver")
> Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
> ---
> Changes since v1[1]:
> - Move dma_set_mask() as well (Michael)
>
> [1] https://lore.kernel.org/all/20220311133738.38649-1-parri.andrea@gmail.com/T/#u
>
> drivers/hv/vmbus_drv.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> index 12a2b37e87f30..0a05e10ab36c7 100644
> --- a/drivers/hv/vmbus_drv.c
> +++ b/drivers/hv/vmbus_drv.c
> @@ -2097,6 +2097,10 @@ int vmbus_device_register(struct hv_device
> *child_device_obj)
> child_device_obj->device.parent = &hv_acpi_dev->dev;
> child_device_obj->device.release = vmbus_device_release;
>
> + child_device_obj->device.dma_parms = &child_device_obj->dma_parms;
> + child_device_obj->device.dma_mask = &child_device_obj->dma_mask;
> + dma_set_mask(&child_device_obj->device, DMA_BIT_MASK(64));
> +
> /*
> * Register with the LDM. This will kick off the driver/device
> * binding...which will eventually call vmbus_match() and vmbus_probe()
> @@ -2122,9 +2126,6 @@ int vmbus_device_register(struct hv_device
> *child_device_obj)
> }
> hv_debug_add_dev_dir(child_device_obj);
>
> - child_device_obj->device.dma_parms = &child_device_obj->dma_parms;
> - child_device_obj->device.dma_mask = &child_device_obj->dma_mask;
> - dma_set_mask(&child_device_obj->device, DMA_BIT_MASK(64));
> return 0;
>
> err_kset_unregister:
> --
> 2.25.1
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v2] Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register()
2022-03-15 16:46 ` Michael Kelley (LINUX)
@ 2022-03-29 12:03 ` Wei Liu
0 siblings, 0 replies; 3+ messages in thread
From: Wei Liu @ 2022-03-29 12:03 UTC (permalink / raw)
To: Michael Kelley (LINUX)
Cc: Andrea Parri (Microsoft),
KY Srinivasan, Haiyang Zhang, Stephen Hemminger, Wei Liu,
Dexuan Cui, Tianyu Lan, Long Li, linux-hyperv, linux-kernel
On Tue, Mar 15, 2022 at 04:46:34PM +0000, Michael Kelley (LINUX) wrote:
> From: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Sent: Tuesday, March 15, 2022 7:11 AM
[...]
>
> Reviewed-by: Michael Kelley <mikelley@microsoft.com>
>
Applied to hyperv-fixes. Thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-03-15 14:10 [PATCH v2] Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register() Andrea Parri (Microsoft)
2022-03-15 16:46 ` Michael Kelley (LINUX)
2022-03-29 12:03 ` Wei Liu
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