Bluetooth: hci_uart: add missing NULL check in h5_enqueue
authorPavel Skripkin <paskripkin@gmail.com>
Sun, 13 Mar 2022 17:49:36 +0000 (20:49 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 8 Apr 2022 12:23:41 +0000 (14:23 +0200)
commit7235485433d290367d60ae22fcdfc565e61d42ab
treea2c56508e66094dcb13af72cd7bc1fa9f30c6a5f
parent292e8478ae0ae119240841beb221aaba4fcb10e8
Bluetooth: hci_uart: add missing NULL check in h5_enqueue

[ Upstream commit 32cb08e958696908a9aad5e49a78d74f7e32fffb ]

Syzbot hit general protection fault in __pm_runtime_resume(). The problem
was in missing NULL check.

hu->serdev can be NULL and we should not blindly pass &serdev->dev
somewhere, since it will cause GPF.

Reported-by: syzbot+b9bd12fbed3485a3e51f@syzkaller.appspotmail.com
Fixes: d9dd833cf6d2 ("Bluetooth: hci_h5: Add runtime suspend")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/bluetooth/hci_h5.c