[PATCH v2 0/2] Bluetooth: fix race during h4 bluetooth initialization
From: Jonathan Rissanen
Date: Thu Mar 26 2026 - 06:22:39 EST
Hi,
This series fixes a race condition that causes hci events to sometimes
be ignored during h4 initialization.
The first patch clears the HCI_UART_PROTO_INIT bit if device
registration fails. This is needed to prevent the second patch from
introducing a possible null pointer dereference.
The second patch contains the fix for the race condition.
Signed-off-by: Jonathan Rissanen <jonathan.rissanen@xxxxxxxx>
---
Changes in v2:
- Added a patch before the fix that prevents possible null pointer dereference
from being introduced.
- Link to v1: https://lore.kernel.org/r/20260320-hci-init-fix-v1-1-e1960a41baf2@xxxxxxxx
---
Jonathan Rissanen (2):
Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error
Bluetooth: hci_h4: Fix race during initialization
drivers/bluetooth/hci_h4.c | 3 ---
drivers/bluetooth/hci_ldisc.c | 3 +++
2 files changed, 3 insertions(+), 3 deletions(-)
---
base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
change-id: 20260303-hci-init-fix-9657128a0104
Best regards,
--
Jonathan Rissanen <jonathan.rissanen@xxxxxxxx>