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| author |   Alex Williamson <alex.williamson@redhat.com> | 2016-05-30 07:50:10 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2016-05-30 07:50:10 -0600 |
| commit | 956b56a984ddf10aa69b25318dc04430101beed6 (patch) | |
| tree | 5d698890a0f6ab87af4c647908395f51d30e8356 /tools/perf/scripts/python/stackcollapse.py | |
| parent | Linux 4.7-rc1 (diff) | |
| download | linux-dev-956b56a984ddf10aa69b25318dc04430101beed6.tar.xz linux-dev-956b56a984ddf10aa69b25318dc04430101beed6.zip | |
vfio/pci: Fix ordering of eventfd vs virqfd shutdown
Both the INTx and MSI/X disable paths do an eventfd_ctx_put() for the
trigger eventfd before calling vfio_virqfd_disable() any potential
mask and unmask eventfds. This opens a use-after-free race where an
inopportune irqfd can reference the freed signalling eventfd. Reorder
to avoid this possibility.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions