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Date: Tue, 17 Apr 2018 11:21:49 -0300
From: Mauro Carvalho Chehab <mchehab@infradead.org>
To: Hans Verkuil <hansverk@cisco.com>
Cc: Linux Media Mailing List <linux-media@vger.kernel.org>,
	Sakari Ailus <sakari.ailus@linux.intel.com>,
	Daniel Mentz <danielmentz@google.com>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Subject: Re: [PATCH 4/5] media: v4l2-compat-ioctl32: fix several __user
	annotations
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Em Tue, 17 Apr 2018 10:58:24 -0300
Mauro Carvalho Chehab <mchehab@infradead.org> escreveu:

> Em Tue, 17 Apr 2018 10:10:09 -0300
> Mauro Carvalho Chehab <mchehab@s-opensource.com> escreveu:
> 
> > Em Tue, 17 Apr 2018 10:01:31 -0300
> > Mauro Carvalho Chehab <mchehab@s-opensource.com> escreveu:
> >   
> > > > >> ->blocks is a u32, so this should be a u32 cast as well.        
> > > > 
> > > > Be aware that the unsigned char * cast is actually a bug: it will clamp the
> > > > u32 'blocks' value to a u8.
> > > > 
> > > > Regards,
> > > > 
> > > > 	Hans    
> > > 
> > > What about this approach (code untested)?    
> > 
> > Even better:
> > 
> > [PATCH] media: v4l2-compat-ioctl32: simplify casts
> > 
> > Making the cast right for get_user/put_user is not trivial, as
> > it needs to ensure that the types are the correct ones.
> > 
> > Improve it by using macros.
> > 
> > PS.: Patch untested  
> 
> Tested with:
> 
> 	$ sudo modprobe vivid no_error_inj=1
> 	$ v4l2-compliance-32bits -a -s10 >32bits && v4l2-compliance-64bits -a -s10 > 64bits && diff 32bits 64bits

As I was not running the very latest version of v4l2-compliance,
I applied this patch to both 32 and 64 bit versions of it:

	https://patchwork.linuxtv.org/patch/48746/

Rebuilt and re-run. Those are the results:

 $ v4l2-compliance-32bits -a -s10 >32bits && v4l2-compliance-64bits -a -s10 > 64bits && diff -U0 32bits 64bits

Hans,

Please check this patch and apply if you think it is worth:
	https://patchwork.linuxtv.org/patch/48746/

> 
> 32 bits version results:
> 
> v4l2-compliance SHA   : bc71e4a67c6fbc5940062843bc41e7c8679634ce
> 
> Compliance test for device /dev/video0:
> 
> Driver Info:
> 	Driver name      : vivid
> 	Card type        : vivid
> 	Bus info         : platform:vivid-000
> 	Driver version   : 4.17.0
> 	Capabilities     : 0x853f0df7
> 		Video Capture
> 		Video Output
> 		Video Overlay
> 		VBI Capture
> 		VBI Output
> 		Sliced VBI Capture
> 		Sliced VBI Output
> 		RDS Capture
> 		RDS Output
> 		SDR Capture
> 		Tuner
> 		HW Frequency Seek
> 		Modulator
> 		Audio
> 		Radio
> 		Read/Write
> 		Streaming
> 		Extended Pix Format
> 		Device Capabilities
> 	Device Caps      : 0x05230005
> 		Video Capture
> 		Video Overlay
> 		Tuner
> 		Audio
> 		Read/Write
> 		Streaming
> 		Extended Pix Format
> 
> Required ioctls:
> 	test VIDIOC_QUERYCAP: OK
> 
> Allow for multiple opens:
> 	test second /dev/video0 open: OK
> 	test VIDIOC_QUERYCAP: OK
> 	test VIDIOC_G/S_PRIORITY: OK
> 	test for unlimited opens: OK
> 
> Debug ioctls:
> 	test VIDIOC_DBG_G/S_REGISTER: OK
> 	test VIDIOC_LOG_STATUS: OK
> 
> Input ioctls:
> 	test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK
> 	test VIDIOC_G/S_FREQUENCY: OK
> 	test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> 	test VIDIOC_ENUMAUDIO: OK
> 	test VIDIOC_G/S/ENUMINPUT: OK
> 	test VIDIOC_G/S_AUDIO: OK
> 	Inputs: 4 Audio Inputs: 2 Tuners: 1
> 
> Output ioctls:
> 	test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> 	test VIDIOC_G/S_FREQUENCY: OK
> 	test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> 	test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> 	test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> 	Outputs: 0 Audio Outputs: 0 Modulators: 0
> 
> Input/Output configuration ioctls:
> 	test VIDIOC_ENUM/G/S/QUERY_STD: OK
> 	test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK
> 	test VIDIOC_DV_TIMINGS_CAP: OK
> 	test VIDIOC_G/S_EDID: OK
> 
> Control ioctls (Input 0):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 0):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK (Not Supported)
> 	test Composing: OK (Not Supported)
> 	test Scaling: OK (Not Supported)
> 
> Codec ioctls (Input 0):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 0):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Control ioctls (Input 1):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 1):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK
> 	test Composing: OK
> 	test Scaling: OK
> 
> Codec ioctls (Input 1):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 1):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Control ioctls (Input 2):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 2):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK
> 	test Composing: OK
> 	test Scaling: OK
> 
> Codec ioctls (Input 2):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 2):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Control ioctls (Input 3):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 		warn: v4l2-test-controls.cpp(825): V4L2_CID_DV_RX_POWER_PRESENT not found for input 3
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 3):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK
> 	test Composing: OK
> 	test Scaling: OK
> 
> Codec ioctls (Input 3):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 3):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Test input 0:
> 
> Streaming ioctls:
> 	test read/write: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Test input 1:
> 
> Streaming ioctls:
> 	test read/write: OK
> 		warn: v4l2-test-buffers.cpp(235): V4L2_BUF_FLAG_TIMECODE was used!
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Test input 2:
> 
> Streaming ioctls:
> 	test read/write: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Test input 3:
> 
> Streaming ioctls:
> 	test read/write: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Total: 118, Succeeded: 118, Failed: 0, Warnings: 2
> 
> 64 bits result:
> 
> 
> v4l2-compliance SHA   : bc71e4a67c6fbc5940062843bc41e7c8679634ce
> 
> Compliance test for device /dev/video0:
> 
> Driver Info:
> 	Driver name      : vivid
> 	Card type        : vivid
> 	Bus info         : platform:vivid-000
> 	Driver version   : 4.17.0
> 	Capabilities     : 0x853f0df7
> 		Video Capture
> 		Video Output
> 		Video Overlay
> 		VBI Capture
> 		VBI Output
> 		Sliced VBI Capture
> 		Sliced VBI Output
> 		RDS Capture
> 		RDS Output
> 		SDR Capture
> 		Tuner
> 		HW Frequency Seek
> 		Modulator
> 		Audio
> 		Radio
> 		Read/Write
> 		Streaming
> 		Extended Pix Format
> 		Device Capabilities
> 	Device Caps      : 0x05230005
> 		Video Capture
> 		Video Overlay
> 		Tuner
> 		Audio
> 		Read/Write
> 		Streaming
> 		Extended Pix Format
> 
> Required ioctls:
> 	test VIDIOC_QUERYCAP: OK
> 
> Allow for multiple opens:
> 	test second /dev/video0 open: OK
> 	test VIDIOC_QUERYCAP: OK
> 	test VIDIOC_G/S_PRIORITY: OK
> 	test for unlimited opens: OK
> 
> Debug ioctls:
> 	test VIDIOC_DBG_G/S_REGISTER: OK
> 	test VIDIOC_LOG_STATUS: OK
> 
> Input ioctls:
> 	test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK
> 	test VIDIOC_G/S_FREQUENCY: OK
> 	test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> 	test VIDIOC_ENUMAUDIO: OK
> 	test VIDIOC_G/S/ENUMINPUT: OK
> 	test VIDIOC_G/S_AUDIO: OK
> 	Inputs: 4 Audio Inputs: 2 Tuners: 1
> 
> Output ioctls:
> 	test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> 	test VIDIOC_G/S_FREQUENCY: OK
> 	test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> 	test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> 	test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> 	Outputs: 0 Audio Outputs: 0 Modulators: 0
> 
> Input/Output configuration ioctls:
> 	test VIDIOC_ENUM/G/S/QUERY_STD: OK
> 	test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK
> 	test VIDIOC_DV_TIMINGS_CAP: OK
> 	test VIDIOC_G/S_EDID: OK
> 
> Control ioctls (Input 0):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 0):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK (Not Supported)
> 	test Composing: OK (Not Supported)
> 	test Scaling: OK (Not Supported)
> 
> Codec ioctls (Input 0):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 0):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Control ioctls (Input 1):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 1):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK
> 	test Composing: OK
> 	test Scaling: OK
> 
> Codec ioctls (Input 1):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 1):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Control ioctls (Input 2):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 2):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK
> 	test Composing: OK
> 	test Scaling: OK
> 
> Codec ioctls (Input 2):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 2):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Control ioctls (Input 3):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 		warn: v4l2-test-controls.cpp(825): V4L2_CID_DV_RX_POWER_PRESENT not found for input 3
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 15 Private Controls: 39
> 
> Format ioctls (Input 3):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK
> 	test VIDIOC_G_FBUF: OK
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK
> 	test Composing: OK
> 	test Scaling: OK
> 
> Codec ioctls (Input 3):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> 
> Buffer ioctls (Input 3):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 
> Test input 0:
> 
> Streaming ioctls:
> 	test read/write: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Test input 1:
> 
> Streaming ioctls:
> 	test read/write: OK
> 		warn: v4l2-test-buffers.cpp(235): V4L2_BUF_FLAG_TIMECODE was used!
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Test input 2:
> 
> Streaming ioctls:
> 	test read/write: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Test input 3:
> 
> Streaming ioctls:
> 	test read/write: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test MMAP: OK
> 
> 	Video Capture: Frame #000
> 	Video Capture: Frame #001
> 	Video Capture: Frame #002
> 	Video Capture: Frame #003
> 	Video Capture: Frame #004
> 	Video Capture: Frame #005
> 	Video Capture: Frame #006
> 	Video Capture: Frame #007
> 	Video Capture: Frame #008
> 	Video Capture: Frame #009
> 	                                                  
> 
> 	Video Capture: Frame #000 (polling)
> 	Video Capture: Frame #001 (polling)
> 	Video Capture: Frame #002 (polling)
> 	Video Capture: Frame #003 (polling)
> 	Video Capture: Frame #004 (polling)
> 	Video Capture: Frame #005 (polling)
> 	Video Capture: Frame #006 (polling)
> 	Video Capture: Frame #007 (polling)
> 	Video Capture: Frame #008 (polling)
> 	Video Capture: Frame #009 (polling)
> 	                                                  
> 	test USERPTR: OK
> 	test DMABUF: Cannot test, specify --expbuf-device
> 
> Total: 118, Succeeded: 118, Failed: 0, Warnings: 2
> 
> 
> > 
> > Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
> > 
> > diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> > index 8c05dd9660d3..d2f0268427c2 100644
> > --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> > +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> > @@ -30,6 +30,24 @@
> >  	get_user(__assign_tmp, from) || put_user(__assign_tmp, to);	\
> >  })
> >  
> > +#define get_user_cast(__x, __ptr)					\
> > +({									\
> > +	get_user(__x, (typeof(*__ptr) __user *)(__ptr));		\
> > +})
> > +
> > +#define put_user_force(__x, __ptr)					\
> > +({									\
> > +	put_user((typeof(*__x) __force *)(__x), __ptr);			\
> > +})
> > +
> > +#define assign_in_user_cast(to, from)					\
> > +({									\
> > +	typeof(*from) __assign_tmp;					\
> > +									\
> > +	get_user_cast(__assign_tmp, from) || put_user(__assign_tmp, to);\
> > +})
> > +
> > +
> >  static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> >  {
> >  	long ret = -ENOIOCTLCMD;
> > @@ -543,8 +561,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer __user *p64,
> >  			return -EFAULT;
> >  
> >  		uplane = aux_buf;
> > -		if (put_user((__force struct v4l2_plane *)uplane,
> > -			     &p64->m.planes))
> > +		if (put_user_force(uplane, &p64->m.planes))
> >  			return -EFAULT;
> >  
> >  		while (num_planes--) {
> > @@ -682,7 +699,7 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer __user *p64,
> >  
> >  	if (!access_ok(VERIFY_READ, p32, sizeof(*p32)) ||
> >  	    get_user(tmp, &p32->base) ||
> > -	    put_user((void __force *)compat_ptr(tmp), &p64->base) ||
> > +	    put_user_force(compat_ptr(tmp), &p64->base) ||
> >  	    assign_in_user(&p64->capability, &p32->capability) ||
> >  	    assign_in_user(&p64->flags, &p32->flags) ||
> >  	    copy_in_user(&p64->fmt, &p32->fmt, sizeof(p64->fmt)))
> > @@ -831,8 +848,7 @@ static int get_v4l2_ext_controls32(struct file *file,
> >  	if (aux_space < count * sizeof(*kcontrols))
> >  		return -EFAULT;
> >  	kcontrols = aux_buf;
> > -	if (put_user((__force struct v4l2_ext_control *)kcontrols,
> > -		     &p64->controls))
> > +	if (put_user_force(kcontrols, &p64->controls))
> >  		return -EFAULT;
> >  
> >  	for (n = 0; n < count; n++) {
> > @@ -898,12 +914,11 @@ static int put_v4l2_ext_controls32(struct file *file,
> >  		unsigned int size = sizeof(*ucontrols);
> >  		u32 id;
> >  
> > -		if (get_user(id, (unsigned int __user *)&kcontrols->id) ||
> > +		if (get_user_cast(id, &kcontrols->id) ||
> >  		    put_user(id, &ucontrols->id) ||
> > -		    assign_in_user(&ucontrols->size,
> > -				   (unsigned int __user *)&kcontrols->size) ||
> > +		    assign_in_user_cast(&ucontrols->size, &kcontrols->size) ||
> >  		    copy_in_user(&ucontrols->reserved2,
> > -				 (unsigned int __user *)&kcontrols->reserved2,
> > +				 (void __user *)&kcontrols->reserved2,
> >  				 sizeof(ucontrols->reserved2)))
> >  			return -EFAULT;
> >  
> > @@ -916,7 +931,7 @@ static int put_v4l2_ext_controls32(struct file *file,
> >  			size -= sizeof(ucontrols->value64);
> >  
> >  		if (copy_in_user(ucontrols,
> > -			         (unsigned int __user *)kcontrols, size))
> > +			         (void __user *)kcontrols, size))
> >  			return -EFAULT;
> >  
> >  		ucontrols++;
> > @@ -970,10 +985,9 @@ static int get_v4l2_edid32(struct v4l2_edid __user *p64,
> >  	if (!access_ok(VERIFY_READ, p32, sizeof(*p32)) ||
> >  	    assign_in_user(&p64->pad, &p32->pad) ||
> >  	    assign_in_user(&p64->start_block, &p32->start_block) ||
> > -	    assign_in_user(&p64->blocks,
> > -			   (unsigned char __user *)&p32->blocks) ||
> > +	    assign_in_user_cast(&p64->blocks, &p32->blocks) ||
> >  	    get_user(tmp, &p32->edid) ||
> > -	    put_user((void __force *)compat_ptr(tmp), &p64->edid) ||
> > +	    put_user_force(compat_ptr(tmp), &p64->edid) ||
> >  	    copy_in_user(p64->reserved, p32->reserved, sizeof(p64->reserved)))
> >  		return -EFAULT;
> >  	return 0;
> > 
> > 
> > Thanks,
> > Mauro  
> 
> 
> 
> Thanks,
> Mauro



Thanks,
Mauro

--- 32bits	2018-04-17 11:18:29.141240772 -0300
+++ 64bits	2018-04-17 11:18:40.635282341 -0300
@@ -1 +1 @@
-v4l2-compliance SHA   : bc71e4a67c6fbc5940062843bc41e7c8679634ce, 32 bits
+v4l2-compliance SHA   : bc71e4a67c6fbc5940062843bc41e7c8679634ce, 64 bits