JDK-8162458 : Buffer view implementations use incorrect offset for Unsafe access
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.nio
  • Priority: P2
  • Status: Closed
  • Resolution: Fixed
  • Submitted: 2016-07-25
  • Updated: 2020-09-01
  • Resolved: 2016-07-30
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JDK 9
9 b131Fixed
Related Reports
Relates :  
JDK-8159257 - unsafe.cpp: assert(byte_offset < p_size) failed: Unsafe access: offset 32767 > object's size 16
Relates :  
JDK-8151163 - All Buffer implementations should leverage Unsafe unaligned accessors
Description
JDK-8151163 updated the buffer implementations to use the Unsafe unaligned accessors.

The offset calculation is incorrect. Care also needs to be take to work correctly for heap and direct buffers, specifically for the ByteBufferAs* implementations that leverage an absolute offset to the byte array or address respectively.
Comments
verified in b139
12-10-2016
Marked as an integration blocker to keep JDK-8151163 from leaving JDK9-hs in its current state.
28-07-2016
http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8162458-byte-buffer-view-offset-access-incorrect/webrev/
25-07-2016