diff options
| author | Cornelia Huck <cohuck@redhat.com> | 2019-03-11 10:59:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 06:25:21 +0200 |
| commit | 2cca5be88ac06622da6c6aaa8a2dc7d0ed28c25e (patch) | |
| tree | 14aa5fcbc1f7b2c7290e77a179fd9fb079b1ebf7 /net/sunrpc | |
| parent | 1cb3e7f166b5c3efea42d2576eb2d4625a6c81ac (diff) | |
vfio: ccw: only free cp on final interrupt
commit 50b7f1b7236bab08ebbbecf90521e84b068d7a17 upstream.
When we get an interrupt for a channel program, it is not
necessarily the final interrupt; for example, the issuing
guest may request an intermediate interrupt by specifying
the program-controlled-interrupt flag on a ccw.
We must not switch the state to idle if the interrupt is not
yet final; even more importantly, we must not free the translated
channel program if the interrupt is not yet final, or the host
can crash during cp rewind.
Fixes: e5f84dbaea59 ("vfio: ccw: return I/O results asynchronously")
Cc: stable@vger.kernel.org # v4.12+
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/sunrpc')
0 files changed, 0 insertions, 0 deletions