[PATCH 0/2] aio-posix: fix fdmon-io_uring memory leak

[Stefan Hajnoczi]

This bug was introduced in QEMU 5.0 and causes guests to slow down because
AioHandlers are not freed when the fdmon-io_uring file descriptor monitoring
implementation is used by the main loop thread's glib event loop. This issue
does not apply to IOThread usage of fdmon-io_uring.

In practice few distros build with io_uring support enabled at the moment, so
the number of affected users is likely to be small. The fix is still suitable
for a stable release though.

https://bugs.launchpad.net/qemu/+bug/1877716
https://bugs.launchpad.net/qemu/+bug/1873032

Stefan Hajnoczi (2):
  aio-posix: don't duplicate fd handler deletion in
    fdmon_io_uring_destroy()
  aio-posix: disable fdmon-io_uring when GSource is used

 include/block/aio.h   |  3 +++
 util/aio-posix.c      | 13 +++++++++++++
 util/aio-win32.c      |  4 ++++
 util/async.c          |  1 +
 util/fdmon-io_uring.c | 13 ++++++++++---
 5 files changed, 31 insertions(+), 3 deletions(-)

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2.25.3