Author: liyuqian
Project: chromium-skia
Changelist: https://skia.googlesource.com/skia.git/+/2add0ffdaab4c33ca6702c81533c88c7b5ca7294
Time: Thu Oct 20 11:04:39 2016 -0700
The CL last changed line 1323 of file SkScan_AAAPath.cpp, which is stack frame 4.

liyuqian@, could you please take a look and reassign if it is not related your changes.
Thank you

ClusterFuzz has detected this issue as fixed in range 430262:430287.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5662128553066496

Fuzzer: bj_broddelwerk
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  findX
  SkAAClipBlitter::blitV
  aaa_walk_convex_edges
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=430188:430192
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=430262:430287

Minimized Testcase (0.37 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97xNbBofjYWm02kouSSW6FbhM6ZufM1tMYwHFb88xhDfgy79GTFeirwlQgwSm6hc-NcUHIpevFQuJeBRLfP8l5LWPNS8FCEy5H-28nCpde4MAJVvew1WqOW1Afp1FOxaKY2ddRXKoVSv3-iHmHnZsNzg--r8w?testcase_id=5662128553066496

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.

ClusterFuzz testcase is verified as fixed, closing issue.

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

The following CL should fix it.

https://codereview.chromium.org/2481703004/

Please ignore the CL posted above (https://codereview.chromium.org/2481703004/). That CL is for chromium:662925 (this is chromium:662952; moreover, both these bugs have a final fail in findX, which are really confusing).

The actual CL that fixes this is: https://codereview.chromium.org/2485243002/

The following revision refers to this bug:
  https://skia.googlesource.com/skia.git/+/c78eff97549e8e346394d3e228395ceb8a467b35

commit c78eff97549e8e346394d3e228395ceb8a467b35
Author: liyuqian <liyuqian@google.com>
Date: Wed Nov 09 19:18:30 2016

Do not call blitV with 0 height

This is causing SkAAClipBlitter to crash.

BUG= chromium:662952 
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2485243002

Review-Url: https://codereview.chromium.org/2485243002

[modify] https://crrev.com/c78eff97549e8e346394d3e228395ceb8a467b35/src/core/SkScan_AAAPath.cpp
[modify] https://crrev.com/c78eff97549e8e346394d3e228395ceb8a467b35/tests/PathTest.cpp

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