From: Max Gurtovoy mgurtovoy@nvidia.com
stable inclusion from linux-4.19.194 commit 2bd07ebcb949b17a431aacd0e99fa4558c4a5600
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[ Upstream commit dc51ff91cf2d1e9a2d941da483602f71d4a51472 ]
The ->parent_module is the one that use in try_module_get. It should also be the one the we use in module_put during vfio_platform_open().
Fixes: 32a2d71c4e80 ("vfio: platform: introduce vfio-platform-base module") Signed-off-by: Max Gurtovoy mgurtovoy@nvidia.com Message-Id: 20210518192133.59195-1-mgurtovoy@nvidia.com Signed-off-by: Alex Williamson alex.williamson@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/vfio/platform/vfio_platform_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index c0cd824be2b76..bf06825d977ee 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -296,7 +296,7 @@ static int vfio_platform_open(void *device_data) vfio_platform_regions_cleanup(vdev); err_reg: mutex_unlock(&driver_lock); - module_put(THIS_MODULE); + module_put(vdev->parent_module); return ret; }