RFR: 8351334: [ubsan] memoryReserver.cpp:552:60: runtime error: applying non-zero offset 1073741824 to null pointer

[Afshin Zafari]

The minimum acceptable value was 0 where using it as address was problematic according to UBSAN.
The acceptable value is changed to 64K.

Tests:
linux tier1 is in progress..

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Commit messages:
 - 8351334: [ubsan] memoryReserver.cpp:552:60: runtime error: applying non-zero offset 1073741824 to null pointer

Changes: https://git.openjdk.org/jdk/pull/26955/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26955&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8351334
  Stats: 3 lines in 2 files changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/26955.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26955/head:pull/26955

PR: https://git.openjdk.org/jdk/pull/26955