| commit | 67f7b2781fafcc0f52464880154b320fea1ae982 | [log] [tgz] |
|---|---|---|
| author | Johan Hovold <johan@kernel.org> | Mon Oct 30 11:35:25 2017 +0100 |
| committer | Mark Brown <broonie@kernel.org> | Tue Oct 31 11:09:23 2017 +0000 |
| tree | 4ecd11b1646048334b8aae7bc2a5acdb9d918b40 | |
| parent | 2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e [diff] |
spi: fix use-after-free at controller deregistration
The controller is typically freed as part of device_unregister() so
store the bus id before deregistration to avoid use-after-free when the
id is later released.
Fixes: 9b61e302210e ("spi: Pick spi bus number from Linux idr or spi alias")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable <stable@vger.kernel.org>