linux-kernel - Re: [syzbot] [bluetooth?] WARNING in hci_conn

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Date: Sun, 16 Jun 2024 21:18:26 +0800
From: Edward Adam Davis <eadavis@...com>
To: paskripkin@...il.com
Cc: davem@...emloft.net,
	eadavis@...com,
	edumazet@...gle.com,
	johan.hedberg@...il.com,
	kuba@...nel.org,
	linux-bluetooth@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	luiz.dentz@...il.com,
	luiz.von.dentz@...el.com,
	marcel@...tmann.org,
	netdev@...r.kernel.org,
	pabeni@...hat.com,
	syzbot+b2545b087a01a7319474@...kaller.appspotmail.com,
	syzkaller-bugs@...glegroups.com,
	william.xuanziyang@...wei.com
Subject: Re: [syzbot] [bluetooth?] WARNING in hci_conn_del

On Sun, 16 Jun 2024 13:37:17 +0300, Pavel Skripkin wrote:
> > hci_le_big_sync_established_evt is necessary to filter out cases where the handle
> > value is belone to ida id range, otherwise ida will be erroneously released in
> > hci_conn_cleanup.
> >
> > Fixes: 181a42edddf5 ("Bluetooth: Make handle of hci_conn be unique")
> > Reported-by: syzbot+b2545b087a01a7319474@...kaller.appspotmail.com
> > Signed-off-by: Edward Adam Davis <eadavis@...com>
> > ---
> 
> There is one more user of  `hci_conn_add` which may pass too big handle
> which is `hci_le_cis_req_evt`.
This case only affect hci_le_big_sync_established_evt.

--
Edward