[jdk21u-dev] RFR: 8358077: sun.tools.attach.VirtualMachineImpl::checkCatchesAndSendQuitTo on Linux leaks file handles after JDK-8327114 [v4]

[Goetz Lindenmaier]

> I backport this for parity with 21.0.11-oracle.

Goetz Lindenmaier has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into goetz_backport_8358077
 - backport 44d62c8e21fb09381f9f86a081f70549cc321b1e
 - backport 93e889b48cb6eb6872201a28ee19d8fd17c5d821

-------------

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/2561/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/2561/files/d2a9a2d7..5e4b944d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2561&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2561&range=02-03

  Stats: 17 lines in 2 files changed: 15 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2561.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2561/head:pull/2561

PR: https://git.openjdk.org/jdk21u-dev/pull/2561