qemu intel_pt: improve VM tracing #3365
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Hi, is there any chance someone could take a look at this? Thanks :) |
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rmalmain
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Sep 1, 2025
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- Better filter out the VMX root traces during decoding thanks to the new `resync` API in libipt (bumped to 0.4.0). - Extract the Decoder from the linux intel_pt file, since the file/struct was getting too big and the decoder will eventually be compatible with windows. - PT tracing is now enabled manually by fuzzers to have more precise control, instead of beeing always on in vm operations. - Add KVM dirty tracing option to qemu config and raw string options
Instead of hardcoding the addresses (that are compiler dependent), read them from the binary.
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Description
This PR improves VM tracing in libafl_qemu with Intel PT.
resyncAPI in libipt (bumped to 0.4.0).Checklist
./scripts/precommit.shand addressed all comments