Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 204/314] vfio/mdev: Fix reference count leak in add_mdev_supported_type | Date | Tue, 23 Jun 2020 21:56:39 +0200 |
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From: Qiushi Wu <wu000273@umn.edu>
[ Upstream commit aa8ba13cae3134b8ef1c1b6879f66372531da738 ]
kobject_init_and_add() takes reference even when it fails. If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Thus, replace kfree() by kobject_put() to fix this issue. Previous commit "b8eb718348b8" fixed a similar problem.
Fixes: 7b96953bc640 ("vfio: Mediated device Core driver") Signed-off-by: Qiushi Wu <wu000273@umn.edu> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/vfio/mdev/mdev_sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vfio/mdev/mdev_sysfs.c b/drivers/vfio/mdev/mdev_sysfs.c index 7570c7602ab40..f32c582611eb6 100644 --- a/drivers/vfio/mdev/mdev_sysfs.c +++ b/drivers/vfio/mdev/mdev_sysfs.c @@ -110,7 +110,7 @@ static struct mdev_type *add_mdev_supported_type(struct mdev_parent *parent, "%s-%s", dev_driver_string(parent->dev), group->name); if (ret) { - kfree(type); + kobject_put(&type->kobj); return ERR_PTR(ret); } -- 2.25.1
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