[Bug 168298] VirtualBox using AIO on a zvol crashes

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 04 Sep 2021 16:25:52 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=168298

--- Comment #63 from commit-hook@FreeBSD.org ---
A commit in branch 2021Q3 references this bug:

URL:
https://cgit.FreeBSD.org/ports/commit/?id=146e091222ee0ad179309319ef36f02b9050a059

commit 146e091222ee0ad179309319ef36f02b9050a059
Author:     Tom Rushworth <tbr@acm.org>
AuthorDate: 2021-09-04 16:19:11 +0000
Commit:     Guido Falsi <madpilot@FreeBSD.org>
CommitDate: 2021-09-04 16:25:08 +0000

    emulators/virtualbox-ose(-legacy): Make VirtualBox limit AIO requests

    Import patch to teach VirtualBox to check availability of AIO
    resources before trying to allocate more.

    This prevents crashes when using AIO in VirtualBox.

    PR:             168298
    (cherry picked from commit 95ac4999a82d493d3d0bc0b2160e07bcc6d80ddf)

 emulators/virtualbox-ose-legacy/Makefile           |  2 +-
 ...MM_VMMR3_PDMAsyncCompletionFileNormal.cpp (new) | 59 ++++++++++++++++++++++
 emulators/virtualbox-ose/Makefile                  |  2 +-
 ...MM_VMMR3_PDMAsyncCompletionFileNormal.cpp (new) | 59 ++++++++++++++++++++++
 4 files changed, 120 insertions(+), 2 deletions(-)

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