git.itanic.dy.fi Git - linux-stable/commit

author	Min Li <lm0963hack@gmail.com>
	Mon, 17 Apr 2023 02:27:54 +0000 (10:27 +0800)
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
	Tue, 30 May 2023 11:38:35 +0000 (12:38 +0100)
commit	5f352a56f0e607e6ff539cbf12156bfd8af232be
tree	eb123bd9fddf5b34ef4e927b910ca2794bf55fd0	tree \| snapshot
parent	76b5ea43ad2fb4f726ddfaff839430a706e7d7c2	commit \| diff

Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp

[ Upstream commit 25e97f7b1866e6b8503be349eeea44bb52d661ce ]

conn->chan_lock isn't acquired before l2cap_get_chan_by_scid,
if l2cap_get_chan_by_scid returns NULL, then 'bad unlock balance'
is triggered.

Reported-by: syzbot+9519d6b5b79cf7787cf3@syzkaller.appspotmail.com
Link: https://lore.kernel.org/all/000000000000894f5f05f95e9f4d@google.com/
Signed-off-by: Min Li <lm0963hack@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>