From: Qianqiang Liu <qianqiang.liu@163.com>
To: syzbot <syzbot+03d6270b6425df1605bf@syzkaller.appspotmail.com>
Cc: johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org,
linux-kernel@vger.kernel.org, luiz.dentz@gmail.com,
marcel@holtmann.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in set_powered_sync
Date: Thu, 3 Oct 2024 22:28:29 +0800 [thread overview]
Message-ID: <Zv6qDfzdXMrSjGkE@fedora> (raw)
In-Reply-To: <000000000000932e45061d45f6e8@google.com>
#syz test
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 5533e6f561b3..259b18eb0b20 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -5187,8 +5187,11 @@ int hci_dev_close_sync(struct hci_dev *hdev)
auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF);
if (!auto_off && !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
- hci_dev_test_flag(hdev, HCI_MGMT))
+ hci_dev_test_flag(hdev, HCI_MGMT)) {
+ hci_req_sync_lock(hdev);
__mgmt_power_off(hdev);
+ hci_req_sync_unlock(hdev);
+ }
hci_inquiry_cache_flush(hdev);
hci_pend_le_actions_clear(hdev);
--
Best,
Qianqiang Liu
next prev parent reply other threads:[~2024-10-03 14:28 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-15 9:36 [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in set_powered_sync syzbot
2024-09-08 9:07 ` syzbot
2024-09-08 16:43 ` syzbot
2024-10-03 14:28 ` Qianqiang Liu [this message]
2024-10-03 14:45 ` syzbot
2024-10-03 15:41 ` Qianqiang Liu
2024-10-03 16:22 ` syzbot
2024-10-03 16:45 ` Qianqiang Liu
2024-10-03 16:54 ` Luiz Augusto von Dentz
2024-10-03 17:15 ` Qianqiang Liu
2024-10-04 20:50 ` Luiz Augusto von Dentz
2024-10-04 20:54 ` syzbot
2024-10-03 17:13 ` syzbot
-- strict thread matches above, loose matches on Subject: below --
2024-11-15 16:41 [PATCH v1] Bluetooth: MGMT: Fix " Luiz Augusto von Dentz
2024-11-15 23:32 ` [syzbot] [bluetooth?] KASAN: " syzbot
2024-11-15 18:41 [PATCH v1] Bluetooth: MGMT: Fix " Luiz Augusto von Dentz
2024-11-15 23:57 ` [syzbot] [bluetooth?] KASAN: " syzbot
2024-11-18 16:04 [PATCH v3] Bluetooth: MGMT: Fix " Luiz Augusto von Dentz
2024-11-18 16:31 ` [syzbot] [bluetooth?] KASAN: " syzbot
2024-11-18 17:00 [PATCH v3] Bluetooth: MGMT: Fix " Luiz Augusto von Dentz
2024-11-18 17:26 ` [syzbot] [bluetooth?] KASAN: " syzbot
2024-11-18 20:50 [PATCH v5] Bluetooth: MGMT: Fix " Luiz Augusto von Dentz
2024-11-18 21:16 ` [syzbot] [bluetooth?] KASAN: " syzbot
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