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Adds a fuzzer for the ImposedEnsembleMatcher. This achieves between
5000 and 10000 exec/s. At 10000 runs this covers 96% of the
imposed_ensemble_matcher and 50% of the io_utils (another file lacking
coverage). Uncovered lines in io_utils are attributed to debug tools.
The missing lines in imposed_ensemble_matcher are error cases which
haven't been hit yet. The seed uses duplicated back to back copies of
old.ztf and new.ztf.
Bug: 835341
Change-Id: I742ca6f4c409c9a9ec4a335da2b50fd8d4d6ed6f
Reviewed-on: https://chromium-review.googlesource.com/1117572
Commit-Queue: Calder Kitagawa <ckitagawa@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572201}
NOKEYCHECK=True
GitOrigin-RevId: f7b526674131a74a43ba13394f1c4819cac9c2d2
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This is a reland of f4a598ff5adfe27f8153bd36984ee9cb549f99e9
Windows cannot resolve #!/usr/bin/env python depending on how it is
configured. To fix this explicitly use python in the subprocess call.
Interestingly, the Tryjobs didn't catch this and only the official
build waterfall does...
Original change's description:
> [Zucchini] (raw) Apply fuzzer
>
> This is part of a series of Fuzzers to be added to Zucchini for
> security review. This tests the raw data patch application logic
> exercising the patch reader and apply process. It only covers ~20%
> of code in 100000 executions as the bulk of the remaining code is
> associated with the much more complex and expensive to fuzz reference
> related code.
>
> With the supplied seed corpus the fuzzer reaches approximately 11000
> execs/s.
>
> This found a couple bugs which are fixed in:
> https://chromium-review.googlesource.com/c/chromium/src/+/1028575
>
>
> Bug: 835341
> Change-Id: Idc1d862bfaa6eb6313f39e10536f4750c05ab863
> Reviewed-on: https://chromium-review.googlesource.com/1028570
> Commit-Queue: Calder Kitagawa <ckitagawa@google.com>
> Reviewed-by: Samuel Huang <huangs@chromium.org>
> Reviewed-by: Greg Thompson <grt@chromium.org>
> Reviewed-by: Max Moroz <mmoroz@chromium.org>
> Reviewed-by: Jonathan Metzman <metzman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#557185}
Bug: 835341
Change-Id: I24e94dd0c2035d84c84636f0a0a30756ae7f0c36
Reviewed-on: https://chromium-review.googlesource.com/1052567
Commit-Queue: Calder Kitagawa <ckitagawa@google.com>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557286}
NOKEYCHECK=True
GitOrigin-RevId: 8e7c08d3d11c61d08ad05d3ebc283aa2d6bf7c91
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This reverts commit f4a598ff5adfe27f8153bd36984ee9cb549f99e9.
Reason for revert: Does not compile on Win 64, see
https://ci.chromium.org/buildbot/chromium/Win%20x64/22249
Original change's description:
> [Zucchini] (raw) Apply fuzzer
>
> This is part of a series of Fuzzers to be added to Zucchini for
> security review. This tests the raw data patch application logic
> exercising the patch reader and apply process. It only covers ~20%
> of code in 100000 executions as the bulk of the remaining code is
> associated with the much more complex and expensive to fuzz reference
> related code.
>
> With the supplied seed corpus the fuzzer reaches approximately 11000
> execs/s.
>
> This found a couple bugs which are fixed in:
> https://chromium-review.googlesource.com/c/chromium/src/+/1028575
>
>
> Bug: 835341
> Change-Id: Idc1d862bfaa6eb6313f39e10536f4750c05ab863
> Reviewed-on: https://chromium-review.googlesource.com/1028570
> Commit-Queue: Calder Kitagawa <ckitagawa@google.com>
> Reviewed-by: Samuel Huang <huangs@chromium.org>
> Reviewed-by: Greg Thompson <grt@chromium.org>
> Reviewed-by: Max Moroz <mmoroz@chromium.org>
> Reviewed-by: Jonathan Metzman <metzman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#557185}
TBR=huangs@chromium.org,mmoroz@chromium.org,grt@chromium.org,metzman@chromium.org,ckitagawa@google.com
Change-Id: Ia1790a01d3f31f25b243ce6e4ec5b52e423e3f6e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 835341
Reviewed-on: https://chromium-review.googlesource.com/1052287
Reviewed-by: vitaliii <vitaliii@chromium.org>
Commit-Queue: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557196}
NOKEYCHECK=True
GitOrigin-RevId: 0101ff77e665851a5fab50b19427cbb5cdb54954
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This is part of a series of Fuzzers to be added to Zucchini for
security review. This tests the raw data patch application logic
exercising the patch reader and apply process. It only covers ~20%
of code in 100000 executions as the bulk of the remaining code is
associated with the much more complex and expensive to fuzz reference
related code.
With the supplied seed corpus the fuzzer reaches approximately 11000
execs/s.
This found a couple bugs which are fixed in:
https://chromium-review.googlesource.com/c/chromium/src/+/1028575
Bug: 835341
Change-Id: Idc1d862bfaa6eb6313f39e10536f4750c05ab863
Reviewed-on: https://chromium-review.googlesource.com/1028570
Commit-Queue: Calder Kitagawa <ckitagawa@google.com>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Reviewed-by: Max Moroz <mmoroz@chromium.org>
Reviewed-by: Jonathan Metzman <metzman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557185}
NOKEYCHECK=True
GitOrigin-RevId: f4a598ff5adfe27f8153bd36984ee9cb549f99e9
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