iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

HID: hiddev: do cleanup in failure of opening a device

Browse Source 
commit 6d4472d7bec39917b54e4e80245784ea5d60ce49 upstream.

Undo what we did for opening before releasing the memory slice.

Reported-by: syzbot <syzbot+62a1e04fd3ec2abf099e@syzkaller.appspotmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hillf Danton 2019-08-06 16:40:15 +08:00 committed by Greg Kroah-Hartman
parent 52aaeae5f2
commit 963a14fb9c
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/hid/usbhid/hiddev.c
View File

@ -330,6 +330,10 @@ static int hiddev_open(struct inode *inode, struct file *file)
return 0;
bail_unlock:
mutex_unlock(&hiddev->existancelock);
spin_lock_irq(&list->hiddev->list_lock);
list_del(&list->node);
spin_unlock_irq(&list->hiddev->list_lock);
bail:
file->private_data = NULL;
vfree(list);