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author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2024-03-04 21:14:21 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-03 16:28:27 +0300 |
commit | d4e2365b07f1ae1f811a915b514caef5b2d6581e (patch) | |
tree | bf89041948a4aaab668460bfc2bdafcbbf25169c /drivers/bluetooth | |
parent | 985edff78e8076b4c88a1528219e6e6851f53127 (diff) | |
download | linux-d4e2365b07f1ae1f811a915b514caef5b2d6581e.tar.xz |
Bluetooth: btnxpuart: Fix btnxpuart_close
[ Upstream commit 664130c0b0309b360bc5bdd40a30604a9387bde8 ]
Fix scheduling while atomic BUG in btnxpuart_close(), properly
purge the transmit queue and free the receive skb.
[ 10.973809] BUG: scheduling while atomic: kworker/u9:0/80/0x00000002
...
[ 10.980740] CPU: 3 PID: 80 Comm: kworker/u9:0 Not tainted 6.8.0-rc7-0.0.0-devel-00005-g61fdfceacf09 #1
[ 10.980751] Hardware name: Toradex Verdin AM62 WB on Dahlia Board (DT)
[ 10.980760] Workqueue: hci0 hci_power_off [bluetooth]
[ 10.981169] Call trace:
...
[ 10.981363] uart_update_mctrl+0x58/0x78
[ 10.981373] uart_dtr_rts+0x104/0x114
[ 10.981381] tty_port_shutdown+0xd4/0xdc
[ 10.981396] tty_port_close+0x40/0xbc
[ 10.981407] uart_close+0x34/0x9c
[ 10.981414] ttyport_close+0x50/0x94
[ 10.981430] serdev_device_close+0x40/0x50
[ 10.981442] btnxpuart_close+0x24/0x98 [btnxpuart]
[ 10.981469] hci_dev_close_sync+0x2d8/0x718 [bluetooth]
[ 10.981728] hci_dev_do_close+0x2c/0x70 [bluetooth]
[ 10.981862] hci_power_off+0x20/0x64 [bluetooth]
Fixes: 689ca16e5232 ("Bluetooth: NXP: Add protocol support for NXP Bluetooth chipsets")
Cc: stable@vger.kernel.org
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r-- | drivers/bluetooth/btnxpuart.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 951fe3014a3f..abccd571cf3e 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -1234,6 +1234,9 @@ static int btnxpuart_close(struct hci_dev *hdev) ps_wakeup(nxpdev); serdev_device_close(nxpdev->serdev); + skb_queue_purge(&nxpdev->txq); + kfree_skb(nxpdev->rx_skb); + nxpdev->rx_skb = NULL; clear_bit(BTNXPUART_SERDEV_OPEN, &nxpdev->tx_state); return 0; } |