hcm: Can you take a look at this crash? Thanks.

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

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

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

I don't think this problem is created by Skia's code, but having trouble pinpointing where things go wrong in code further down the stack trace.  Also a better bisect would be really helpful.

sugoi@ -- I know this is a long shot, but any possibility that this may have been caused by your CL: https://chromium-review.googlesource.com/1128207

sugoi - feel free to re-assign if this is not caused by the (longshot) CL above.

This is another case of a leftover "--use-gl=osmesa" on Linux MSAN on Clusterfuzz. These have been changed to "-use-gl=swiftshader", so this issue may be obsolete (not sure if it will recover by itself).

Flag is removed, but it sticks with testcase, closing.

ClusterFuzz testcase 5182307754049536 is still reproducing on tip-of-tree build (trunk).

If this testcase was not reproducible locally or unworkable, ignore this notification and we will file another bug soon with hopefully a better and workable testcase.

Otherwise, if this is not intended to be fixed (e.g. this is an intentional crash), please add ClusterFuzz-Ignore label to prevent future bug filing with similar crash stacktrace.

Oops, wrong bug

ClusterFuzz has detected this issue as fixed in range 598841:598866.

Detailed report: https://clusterfuzz.com/testcase?key=5182307754049536

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  Sk4fXfermode<ColorDodge>::xfer32
  SkARGB32_Shader_Blitter::blitRect
  SkScan::FillIRect
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=582653:582655
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_chrome&range=598841:598866

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5182307754049536

See https://github.com/google/clusterfuzz-tools for more information.

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

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