tree 3f8bb06f4c26f83d8380068f1eda051a5b400410
parent f8790f81eb8d4a1093e27485e4424ed423e2cc1b
author Anthony PERARD <anthony.perard@citrix.com> 1686057365 +0100
committer Anthony PERARD <anthony.perard@citrix.com> 1686146830 +0100

xen-block: fix segv on unrealize

Backtrace:
  qemu_lockcnt_lock (lockcnt=0xb4) at ../util/lockcnt.c:238
  aio_set_fd_handler (ctx=0x0, fd=51, is_external=true, io_read=0x0, io_write=0x0, io_poll=0x0, io_poll_ready=0x0, opaque=0x0) at ../util/aio-posix.c:119
  xen_device_unbind_event_channel (xendev=0x55c6da5b5000, channel=0x55c6da6c4c80, errp=0x7fff641ac608) at ../hw/xen/xen-bus.c:926
  xen_block_dataplane_stop (dataplane=0x55c6da6ddbe0) at ../hw/block/dataplane/xen-block.c:719
  xen_block_disconnect (xendev=0x55c6da5b5000, errp=0x0) at ../hw/block/xen-block.c:48
  xen_block_unrealize (xendev=0x55c6da5b5000) at ../hw/block/xen-block.c:154
  xen_device_unrealize (dev=0x55c6da5b5000) at ../hw/xen/xen-bus.c:956
  xen_device_exit (n=0x55c6da5b50d0, data=0x0) at ../hw/xen/xen-bus.c:985
  notifier_list_notify (list=0x55c6d91f9820 <exit_notifiers>, data=0x0) at ../util/notify.c:39
  qemu_run_exit_notifiers () at ../softmmu/runstate.c:760

Fixes: f6eac904f682 ("xen-block: implement BlockDevOps->drained_begin()")
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230606131605.55596-1-anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>