docs/linux: add instructions for fuzzing Linux x86-64 kernel on Android virtual device #6293
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Hi @Radon10043 . Thanks for summarizing your experience as a documentation page!
Internal links or external links? |
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Thanks! Please note the following |
| - enable `virtio-blk` so Cuttlefish can emulate the device as expected; | ||
| - and minimize kernel size. | ||
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| Add the following flags to the `update_kasan_config` function in `common-android13-5.15/common/build.config.gki_kasan.x86_64`: |
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I wonder if it's not already enabled in the default Cuttlefish configs.
See e.g. https://github.com/google/syzkaller/blob/master/pkg/build/cuttlefish.go
Here we build the common-modules/virtual-device:virtual_device_x86_64_dist target and end up with the VIRTIO_* configs already enabled.
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Just checked cuttlefish.go. For build.sh, I found that kasan config provided by GKI will be used by syzkaller to build the kernel. However, based on my experience, this configuration will not enable VIRTIO_* related configs, leading to cuttlefish failing to emulate a virtual device.
syzkaller/pkg/build/cuttlefish.go
Lines 20 to 21 in 1804e95
Regarding bazel, I'm not sure if the applied kernel config enables VIRTIO_* related configs. Going to verify it later.
syzkaller/pkg/build/cuttlefish.go
Line 22 in 1804e95
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Hi @a-nogikh ,
Thanks for the heads-up! I've just amended the commit to fix the line length in the description. The |
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The CI will now fail because of the merge commit - we rebase instead. |
Hi syzkaller maintainers,
When I was trying to set up syzkaller for fuzzing the Linux kernel on an Android virtual device, I found that several crucial links are broken in existing documentation (leading to 404 errors). This may make the setup process challenging for new users.
To address this, I have created a new documentation page that provides instructions for fuzzing the Linux x86-64 kernel on an Android virtual device.
This new page specifically covers:
Hope this contribution will be helpful to the community!
Please let me know if any changes are needed.
Thanks!