|Testing for regressions in Media Controller API register, ioctl, syscall,
|and unregister paths. There have a few problems that result in user-after
|free on media_device, media_devnode, and cdev pointers when the driver is
|unbound while ioctl is in progress.
|Run bin/unbind loop while ioctls are in progress.
|Run rmmod and modprobe.
|Disconnect the device.
|Regressions test for cdev user-after free error on /dev/mediaX when driver
|Start media_device_test to regression test media devnode dynamic alloc
|and cdev user-after-free fixes. This opens media dev files and sits in
|a loop running media ioctl MEDIA_IOC_DEVICE_INFO command once every 10
|seconds. The idea is when device file goes away, media devnode and cdev
|should stick around until this test exits.
|The test for a random number of iterations or until user kills it with a
|sleep 10 in between the ioctl calls.
|sudo ./media_device_test -d /dev/mediaX
|Regression test for media_devnode unregister race with ioctl_syscall:
|Start 6 open_loop_test.sh tests with different /dev/mediaX files. When
|device file goes away after unbind, device file name changes. Start the
|test with possible device names. If we start with /dev/media0 for example,
|after unbind, /dev/media1 or /dev/media2 could get created. The idea is
|keep ioctls going while bind/unbind runs.
|Copy bind_unbind_sample.txt and make changes to specify the driver name
|and number to run bind and unbind. Start the bind_unbind.sh
|Run dmesg looking for any user-after free errors or mutex lock errors.