| From | Paul Gortmaker <> | Subject | [v2.6.34-stable 134/213] Bluetooth: add NULL pointer check in HCI | Date | Wed, 5 Feb 2014 15:01:29 -0500 |
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From: Jun Nie <njun@marvell.com>
------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. -------------------
commit d9319560b86839506c2011346b1f2e61438a3c73 upstream.
If we fail to find a hci device pointer in hci_uart, don't try to deref the NULL one we do have.
Signed-off-by: Jun Nie <njun@marvell.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> --- drivers/bluetooth/hci_ldisc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index 283b127cea74..91be8d53d819 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -313,8 +313,10 @@ static void hci_uart_tty_close(struct tty_struct *tty) if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { hu->proto->close(hu); - hci_unregister_dev(hdev); - hci_free_dev(hdev); + if (hdev) { + hci_unregister_dev(hdev); + hci_free_dev(hdev); + } } } } -- 1.8.5.2
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