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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/media_tests/regression_test.txt | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/media_tests/regression_test.txt')
-rw-r--r-- | tools/testing/selftests/media_tests/regression_test.txt | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tools/testing/selftests/media_tests/regression_test.txt b/tools/testing/selftests/media_tests/regression_test.txt new file mode 100644 index 000000000..262736768 --- /dev/null +++ b/tools/testing/selftests/media_tests/regression_test.txt @@ -0,0 +1,43 @@ +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. + +Test Procedure: + +Run bin/unbind loop while ioctls are in progress. +Run rmmod and modprobe. +Disconnect the device. + +Setup: + +Build media_device_test +cd tools/testing/selftests/media_tests +make + +Regressions test for cdev user-after free error on /dev/mediaX when driver +is unbound: + +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. |