diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2019-06-05 09:08:20 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-05 15:57:46 -0400 |
| commit | 6e2980cc68d0dfac1c734fae887754c1cb9904a0 (patch) | |
| tree | 2ba41dfd5ac327fb0c9aee6398b2db5cb3c988eb /drivers/media/usb | |
| parent | 7aac98494d1d932cde053861ce0c12ca5ab3f762 (diff) | |
media: pvrusb2: fix null-ptr-deref in class_unregister()
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 <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/pvrusb2/pvrusb2-sysfs.c | 3 |
1 files changed, 2 insertions, 1 deletions
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); } |