6.17-stable review patch. If anyone has any objections, please let me know.
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From: Miaoqian Lin linmq006@gmail.com
commit eaba58355ecd124b4a8c91df7335970ad9fe2624 upstream.
The debugfs_lookup() function returns a dentry with an increased reference count that must be released by calling dput().
Fixes: b398f91779b8 ("hisi_acc_vfio_pci: register debugfs for hisilicon migration driver") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com Reviewed-by: Longfang Liu liulongfang@huawei.com Link: https://lore.kernel.org/r/20250901081809.2286649-1-linmq006@gmail.com Signed-off-by: Alex Williamson alex.williamson@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c +++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c @@ -1612,8 +1612,10 @@ static void hisi_acc_vfio_debug_init(str }
migf = kzalloc(sizeof(*migf), GFP_KERNEL); - if (!migf) + if (!migf) { + dput(vfio_dev_migration); return; + } hisi_acc_vdev->debug_migf = migf;
vfio_hisi_acc = debugfs_create_dir("hisi_acc", vfio_dev_migration); @@ -1623,6 +1625,8 @@ static void hisi_acc_vfio_debug_init(str hisi_acc_vf_migf_read); debugfs_create_devm_seqfile(dev, "cmd_state", vfio_hisi_acc, hisi_acc_vf_debug_cmd); + + dput(vfio_dev_migration); }
static void hisi_acc_vf_debugfs_exit(struct hisi_acc_vf_core_device *hisi_acc_vdev)