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| Who | What | When |
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| stdint | I have a memory import problem with v4l
I want to use userptr to mmap the compressed video frame directly but somebody told me it would making the system more slow, even iommu can't translate a large range of buffer address I have been suggested to use dmabuf with memcpy | [06:49] |
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| *** | yang has left "Free yourself with Free Software, join www.FSF.org" | [11:51] |
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| pinchartl | sailus: ping | [15:22] |
| hverkuil | sailus: what is the status of this patch series: https://patchwork.linuxtv.org/patch/36689/ Is it still waiting for my review?
pinchartl: what's the weather in Santa Fe? | [15:25] |
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| pinchartl | hverkuil: pretty nice, thanks :-) | [15:56] |
| hverkuil: I was just dicussing that series with Shuah this morning
hence my ping for Sakari I don't remember all the details, it's been too long | [16:01] | |
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| hverkuil | It's been too long for me as well. Tomorrow I plan to do more patch review, see if I can make a decent dent in the pile of pending patches.
I didn't do too bad today :-) | [16:44] |
| pinchartl | there's an interesting discussion at LPC about syscall and ioctl fuzzing
they use the branch and function tracers to see how random ioctls with random values move along the code paths in the kernel, to see what random values are interesting to inject https://www.linuxplumbersconf.org/2016/ocw/proposals/3561 | [16:50] |
| hverkuil | Would be cool (and terrifying at the same time) to let that loose at the media ioctls. | [16:52] |
| pinchartl | that's one of the targets they're looking at, given the large numbers of ioctls we have | [16:52] |
| larsc | it already found lots of bugs in ALSA
I think they are working just through the kernel one subsystem at a time | [16:53] |
| pinchartl | one of the issues they have is finding out acceptable ranges for ioctl parameters
they would like a machine-parseable documentation of the media ioctls | [16:54] |
| shuah | it would be nice to check it out on media controller ioctls as well
https://github.com/google/syzkaller - where the soucres for this are | [17:00] |
| awalls | most media ioctl()s are impossible to check thoroughly without a slew of ancient hardware devices
but i suppose covering all those built in laptop webcams would be a great start. | [17:09] |
| hverkuil | vivid has pretty good coverage, actually. | [17:10] |
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| *** | awalls has left | [19:28] |
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