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Issue 629742 link

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Issue metadata

Status: Duplicate
Merged: issue 629034
Owner:
Closed: Aug 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug-Regression



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Undefined-shift in double WTF::toDoubleType<unsigned char,

Project Member Reported by ClusterFuzz, Jul 20 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5984923500675072

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  double WTF::toDoubleType<unsigned char,
  blink::CSSTokenizerInputStream::getDouble
  blink::CSSTokenizer::consumeNumber
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=370022:370027

Minimized Testcase (0.07 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv96_jrjiWsVV-zHvH5T_S0s53NEPEVs97JdODvbDXjtqCzXMPk5euWWtJRLhHumXnKKPYE0p1hd1NnZvAUu2slsO24WWu6kxv0NKs66utQVN0zZWSv4WIVemc6blCijklPL8dDGj_k3diwpRiU2d7rNnrxlldg?testcase_id=5984923500675072
<div style="flex: 0 100000000000000000000000000000000000000 600px;">


Additional requirements: Requires HTTP

Filer: shans

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 
Components: Blink>CSS
Status: Untriaged (was: Available)

Comment 2 by suzyh@chromium.org, Jul 21 2016

Labels: -Pri-1 Pri-2
Status: Available (was: Untriaged)

Comment 3 by suzyh@chromium.org, Jul 21 2016

Labels: -Type-Bug Type-Bug-Regression
Owner: timloh@chromium.org
Status: Assigned (was: Available)

Comment 4 by f...@opera.com, Jul 21 2016

Labels: -ClusterFuzz Clusterfuzz
If the error is something akin to:

../../third_party/WebKit/Source/wtf/dtoa/strtod.cc:271:15: runtime error: shift exponent 63 is too large for 32-bit type int

(same line# et.c but potentially differing in the '63' part)

which likely means a float (string) with lots of zeros in it being the source, then feel free to dupe to  issue 629034 .
Mergedinto: 629034
Status: Duplicate (was: Assigned)
Project Member

Comment 6 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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