AcoSail/kernel_optimize_test
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HID: hiddev: do cleanup in failure of opening a device

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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>
This commit is contained in:
Hillf Danton 2019-08-06 16:40:15 +08:00 committed by Jiri Kosina
parent 9c09b214f3
commit 6d4472d7be
1 changed files with 4 additions and 0 deletions
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drivers/hid/usbhid/hiddev.c
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@ -308,6 +308,10 @@ static int hiddev_open(struct inode *inode, struct file *file)
hid_hw_power(hid, PM_HINT_NORMAL);
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);