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Asan guest fix #2986

Merged
merged 3 commits into from
Feb 17, 2025
Merged

Asan guest fix #2986

merged 3 commits into from
Feb 17, 2025

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WorksButNotTested
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This PR changes the following:

  • Checks the configuration of the shadow map in first_exec rather than post_qemu_init to give the target chance to initialize
  • Configures the shadow ranges with MADV_DONTDUMP to attempt to exclude them from any core dump (not sure if QEMU is taking any notice of this though).
  • Adds support to the snapshot module to allow the user to configure some regions to be zeroed. This prevents the need for the snapshot module to take a complete copy of all of the shadow ranges, but still allows them to be reset.

@domenukk domenukk requested a review from rmalmain February 17, 2025 13:53
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For some reason libfuzzer_stb_image_sugar doesn't work on this PR(?)

Also, this needs some clippy love :)

@WorksButNotTested WorksButNotTested mentioned this pull request Feb 17, 2025
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@rmalmain rmalmain merged commit f5a01ee into AFLplusplus:main Feb 17, 2025
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@WorksButNotTested WorksButNotTested deleted the asan_guest_fix branch February 18, 2025 07:48
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@rmalmain rmalmain rmalmain approved these changes

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@WorksButNotTested @domenukk @rmalmain