Re: [syzbot] [bluetooth?] KASAN: invalid-free in hci_req_sync_complete

Hillf Danton
2024-06-23T05:43:40Z

On Wed, 19 Jun 2024 04:23:24 -0700
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 2ccbdf43d5e7 Merge tag 'for-linus' of git://git.kernel.org..
> git tree: upstream
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=125874ea980000

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2ccbdf43d5e7

--- x/net/bluetooth/hci_request.c
+++ h/net/bluetooth/hci_request.c
@@ -181,7 +181,6 @@ int __hci_req_sync(struct hci_dev *hdev,
break;
}

- kfree_skb(hdev->req_skb);
hdev->req_skb = NULL;
hdev->req_status = hdev->req_result = 0;

--