Unreachable code in asm-wasm-builder.cc |
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Issue descriptionDetailed report: https://cluster-fuzz.appspot.com/testcase?key=5432245146091520 Fuzzer: mbarbella_js_mutation Job Type: linux_asan_d8_v8_arm_dbg Platform Id: linux Crash Type: Unreachable code Crash Address: Crash State: asm-wasm-builder.cc Regressed: V8: r35045:35048 Minimized Testcase (0.47 Kb): Download: https://cluster-fuzz.appspot.com/download/AMIfv96n1glzvD3UGURWNqAq2mw2v6WNP3uUOlDU_VPKELU2HrC1SdEGynLAOeAnXRNkix2wMWFFaxncXiX4mq2pCHwfpDREYTfnEpqD0qD6Lpk40xkwlE49ja8ss54NyECjAafLKBnKbciapzB1Z_k1kJD8uq2qCw?testcase_id=5432245146091520 function __f_104(stdlib, buffer) { "use asm"; var __v_33 = new stdlib.Int32Array(buffer); function __f_21() { __v_33[2147483648]|9 + -1 | -7; } return {__f_21: __f_21}; } var __v_22 = [ [, '>> 0'], [Uint8Array, 'Uint8Array'], [][ '>> 1'], [][ '>> 2']]; for (var __v_30 = 0; __v_30 < __v_22.length; __v_30++) { var __v_5 = __f_104.toString(); __v_5 = __v_5.replace('Int32Array', __v_22[__v_30][1]); var module = Wasm.instantiateModuleFromAsm(__v_5); } Filer: mstarzinger See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
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Jun 30 2016
This is another case of the unsound use of intersections in AsmTyper::VisitWithExpectation.
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Jun 30 2016
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Jul 12 2016
ClusterFuzz has detected this issue as fixed in range 37692:37693. Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5432245146091520 Fuzzer: mbarbella_js_mutation Job Type: linux_asan_d8_v8_arm_dbg Platform Id: linux Crash Type: Unreachable code Crash Address: Crash State: asm-wasm-builder.cc Regressed: V8: r35045:35048 Fixed: V8: r37692:37693 Minimized Testcase (0.47 Kb): Download: https://cluster-fuzz.appspot.com/download/AMIfv96n1glzvD3UGURWNqAq2mw2v6WNP3uUOlDU_VPKELU2HrC1SdEGynLAOeAnXRNkix2wMWFFaxncXiX4mq2pCHwfpDREYTfnEpqD0qD6Lpk40xkwlE49ja8ss54NyECjAafLKBnKbciapzB1Z_k1kJD8uq2qCw?testcase_id=5432245146091520 function __f_104(stdlib, buffer) { "use asm"; var __v_33 = new stdlib.Int32Array(buffer); function __f_21() { __v_33[2147483648]|9 + -1 | -7; } return {__f_21: __f_21}; } var __v_22 = [ [, '>> 0'], [Uint8Array, 'Uint8Array'], [][ '>> 1'], [][ '>> 2']]; for (var __v_30 = 0; __v_30 < __v_22.length; __v_30++) { var __v_5 = __f_104.toString(); __v_5 = __v_5.replace('Int32Array', __v_22[__v_30][1]); var module = Wasm.instantiateModuleFromAsm(__v_5); } See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information. If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
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Jul 13 2016
ClusterFuzz testcase is verified as fixed, closing issue. If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
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Nov 22 2016
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot |
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Comment 1 by mstarzinger@chromium.org
, Jun 30 2016Owner: bradnelson@chromium.org
Status: Assigned (was: Available)