diff options
| author | Benjamin Berg | 2021-12-17 16:28:09 +0100 |
|---|---|---|
| committer | Marcel Holtmann | 2021-12-22 23:01:27 +0100 |
| commit | 744451c162a514044a912cbbd64b7a386035cc5b (patch) | |
| tree | 3b98ed43f097ae8e357b895c93078b1932207e6b /net/bluetooth/hci_request.c | |
| parent | df1e5c51492fd93ffc293acdcc6f00698d19fedc (diff) | |
Bluetooth: hci_sync: Push sync command cancellation to workqueue
syzbot reported that hci_cmd_sync_cancel may sleep from the wrong
context. To avoid this, create a new work item that pushes the relevant
parts into a different context.
Note that we keep the old implementation with the name
__hci_cmd_sync_cancel as the sleeping behaviour is desired in some
cases.
Reported-and-tested-by: syzbot+485cc00ea7cf41dfdbf1@syzkaller.appspotmail.com
Fixes: c97a747efc93 ("Bluetooth: btusb: Cancel sync commands for certain URB errors")
Signed-off-by: Benjamin Berg <bberg@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_request.c')
| -rw-r--r-- | net/bluetooth/hci_request.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index 329c66456cf1..ef5ced467f75 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -2692,7 +2692,7 @@ void hci_request_setup(struct hci_dev *hdev) void hci_request_cancel_all(struct hci_dev *hdev) { - hci_cmd_sync_cancel(hdev, ENODEV); + __hci_cmd_sync_cancel(hdev, ENODEV); cancel_work_sync(&hdev->discov_update); cancel_work_sync(&hdev->scan_update); |