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| author | Kevin Wolf | 2017-06-02 23:04:55 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2017-06-09 13:46:13 +0200 |
| commit | 19ebd13ed45ad5d5f277f5914d55b83f13eb09eb (patch) | |
| tree | ee37d5d3330a0e7824b4fd5aa377d0a6c92b6d30 /tests/qemu-iotests | |
| parent | qemu-iotests: Block migration test (diff) | |
| download | qemu-19ebd13ed45ad5d5f277f5914d55b83f13eb09eb.tar.gz qemu-19ebd13ed45ad5d5f277f5914d55b83f13eb09eb.tar.xz qemu-19ebd13ed45ad5d5f277f5914d55b83f13eb09eb.zip | |
commit: Fix use after free in completion
The final bdrv_set_backing_hd() could be working on already freed nodes
because the commit job drops its references (through BlockBackends) to
both overlay_bs and top already a bit earlier.
One way to trigger the bug is hot unplugging a disk for which
blockdev_mark_auto_del() cancels the block job.
Fix this by taking BDS-level references while we're still using the
nodes.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Diffstat (limited to 'tests/qemu-iotests')
0 files changed, 0 insertions, 0 deletions