The class_ptr will be NULL if pvr2_sysfs_class_create() fails in pvr_init(), when call pvr2_sysfs_class_destroy(), it will lead to null-ptr-deref, fix it.
Reported-by: Hulk Robot <[email protected]> Signed-off-by: Kefeng Wang <[email protected]> --- drivers/media/usb/pvrusb2/pvrusb2-sysfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c b/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c index 7bc6d090358e..b6c6b314fadc 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c @@ -802,7 +802,8 @@ struct pvr2_sysfs_class *pvr2_sysfs_class_create(void) void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp) { pvr2_sysfs_trace("Unregistering pvr2_sysfs_class id=%p", clp); - class_unregister(&clp->class); + if (clp) + class_unregister(&clp->class); } -- 2.20.1
