Re: [PATCH v2] Bluetooth: hci_sync: Push sync command cancellation to workqueue

Hi Benjamin,

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 <redacted>

---

v2:
- Add Signed-off-by and changed email address
---
include/net/bluetooth/hci_core.h |  1 +
include/net/bluetooth/hci_sync.h |  1 +
net/bluetooth/hci_core.c         |  2 +-
net/bluetooth/hci_request.c      |  2 +-
net/bluetooth/hci_sync.c         | 27 ++++++++++++++++++++++++++-
5 files changed, 30 insertions(+), 3 deletions(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel