linux-kernel - Re: [syzbot] [bluetooth?] general protection fault in h5

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Message-ID: <20250210110322.2157-1-hdanton@sina.com>
Date: Mon, 10 Feb 2025 19:03:02 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+b5691bb559396b262064@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bluetooth?] general protection fault in h5_recv

On Sun, 09 Feb 2025 07:45:19 -0800
> syzbot found the following issue on:
> 
> HEAD commit:    ed58d103e6da Add linux-next specific files for 20250207
> git tree:       linux-next
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=137f2bdf980000

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git  master

--- x/drivers/bluetooth/hci_ldisc.c
+++ y/drivers/bluetooth/hci_ldisc.c
@@ -711,6 +711,7 @@ static int hci_uart_set_proto(struct hci
 
 	err = hci_uart_register_dev(hu);
 	if (err) {
+		clear_bit(HCI_UART_PROTO_READY, &hu->flags);
 		return err;
 	}
 
--