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Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
authorMin Li <lm0963hack@gmail.com>
Mon, 17 Apr 2023 02:27:54 +0000 (10:27 +0800)
committerLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Mon, 24 Apr 2023 05:05:23 +0000 (22:05 -0700)
commit25e97f7b1866e6b8503be349eeea44bb52d661ce
tree2e8901a8126a28777e499945ae8bc378834c6941tree | snapshot
parent000c2fa2c144c499c881a101819cf1936a1f7cf2commit | diff
Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp

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>
net/bluetooth/l2cap_core.c diff | blob | history
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