This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

A CL is up for review https://chromium-review.googlesource.com/#/c/386853/

The following revision refers to this bug:
  https://chromium.googlesource.com/angle/angle/+/d2f195b5a4b266be817193ed004c26535a32723a

commit d2f195b5a4b266be817193ed004c26535a32723a
Author: Corentin Wallez <cwallez@chromium.org>
Date: Mon Sep 19 19:53:33 2016

preprocessor: Fix use after free when #undef the macro being invoked

BUG= chromium:648031 
BUG= angleproject:1522 

Change-Id: I825cea9e736a2c99133408249cfcd525431d31de
Reviewed-on: https://chromium-review.googlesource.com/386853
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

[modify] https://crrev.com/d2f195b5a4b266be817193ed004c26535a32723a/src/compiler/preprocessor/MacroExpander.cpp
[modify] https://crrev.com/d2f195b5a4b266be817193ed004c26535a32723a/src/compiler/preprocessor/DirectiveParser.cpp
[modify] https://crrev.com/d2f195b5a4b266be817193ed004c26535a32723a/src/tests/preprocessor_tests/define_test.cpp
[modify] https://crrev.com/d2f195b5a4b266be817193ed004c26535a32723a/src/compiler/preprocessor/Macro.h
[modify] https://crrev.com/d2f195b5a4b266be817193ed004c26535a32723a/src/compiler/preprocessor/DiagnosticsBase.cpp
[modify] https://crrev.com/d2f195b5a4b266be817193ed004c26535a32723a/src/compiler/preprocessor/DiagnosticsBase.h

ClusterFuzz has detected this issue as fixed in range 420217:420295.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5881269835792384

Fuzzer: afl_translator_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x60d000001418
Crash State:
  pp::MacroExpander::expandMacro
  pp::MacroExpander::pushMacro
  pp::MacroExpander::lex
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=afl_chrome_asan&range=419085:419121
Fixed: https://cluster-fuzz.appspot.com/revisions?job=afl_chrome_asan&range=420217:420295

Minimized Testcase (2.02 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96WlPuLfM3HtRaMML7SN8Q6DbZiDKThcb2-lzx1eguwYnbBMKXl41O5IHAdsmSbBdqmBSvzo2MAkPw3s9ftK1r2D7NxXsFy7ZxXdQhS7y6n5e0HU51IEVVA_VrWf7xAEADKifwwKauVzvWpBsvSSR6IZBiQdQ?testcase_id=5881269835792384

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase is verified as fixed, closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/86dc7effdd78ad7aacdaf3af7fb8eb7e380e9f64

commit 86dc7effdd78ad7aacdaf3af7fb8eb7e380e9f64
Author: cwallez <cwallez@chromium.org>
Date: Fri Sep 23 21:21:19 2016

Roll ANGLE c287ea6..28a97ee

https://chromium.googlesource.com/angle/angle.git/+log/c287ea6..28a97ee

BUG= chromium:648031 , chromium:648135 , 648063 , 607283 , 645532 , chromium:648074 

TBR=geofflang@chromium.org

TEST=bots

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel

Merge branch 'master' of https://chromium.googlesource.com/chromium/src

fuzzers: add a fuzzer for the ANGLE shader translator

BUG= angleproject:1522 

Review-Url: https://codereview.chromium.org/2364873003
Cr-Commit-Position: refs/heads/master@{#420732}

[modify] https://crrev.com/86dc7effdd78ad7aacdaf3af7fb8eb7e380e9f64/DEPS

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot