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Issue 634822 link

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Issue metadata

Status: Verified
Owner:
Closed: Aug 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug-Regression



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Integer-overflow in XRect_roundOut

Project Member Reported by ClusterFuzz, Aug 5 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6180030759829504

Fuzzer: miaubiz_svg_fuzzer
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  XRect_roundOut
  SkScan::AntiFillXRect
  aa_square_proc
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=398502:398570

Minimized Testcase (4.41 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95aOz5bg0-x2OAaxOoZaoLZtpxfRL2D-d56wnV8GCBcVyznQxq4_jVlf68pj9WCXl_mKbUYTc_7M0I9rLXXkd2qNqmhAz8BLfuqM7wOycUBZSyf05o54-TcovbHGHNZZmhOh24San6xfyvA02znjEQ4UNeIuQ?testcase_id=6180030759829504

Issue manually filed by: ranjitkan

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 
Cc: ranjitkan@chromium.org
Components: Tools>Test>FindIt>CorrectResult
Labels: -Pri-1 -Type-Bug M-54 Findit-for-crash Te-Logged Pri-2 Type-Bug-Regression
Owner: mtklein@chromium.org
Status: Assigned (was: Untriaged)
Author: mtklein
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/343a63d082bda969d7e8a4e09ba850e931185269
Time: Tue Mar 22 18:46:53 2016
The CL last changed line 54 of file SkRecordDraw.cpp, which is stack frame 6.

@mtklein: Assigning to you, request you to please take a look into it. Please help us to reassign if not with respect to your change.

Thanks.!
It's not that change.  I suspect that there is no change to blame here, only something newly stumbled across by the compiler.
Project Member

Comment 3 by ClusterFuzz, Aug 25 2016

ClusterFuzz has detected this issue as fixed in range 413791:414128.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6180030759829504

Fuzzer: miaubiz_svg_fuzzer
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  XRect_roundOut
  SkScan::AntiFillXRect
  aa_square_proc
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=398502:398570
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=413791:414128

Minimized Testcase (4.41 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95aOz5bg0-x2OAaxOoZaoLZtpxfRL2D-d56wnV8GCBcVyznQxq4_jVlf68pj9WCXl_mKbUYTc_7M0I9rLXXkd2qNqmhAz8BLfuqM7wOycUBZSyf05o54-TcovbHGHNZZmhOh24San6xfyvA02znjEQ4UNeIuQ?testcase_id=6180030759829504

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.
Project Member

Comment 4 by ClusterFuzz, Aug 25 2016

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase is verified as fixed, closing issue.

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

Comment 5 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
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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