From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> stable inclusion from stable-5.10.51 commit cc49ab24ec3799f5bc91338fdec81f672a0c5deb bugzilla: 175263 https://gitee.com/openeuler/kernel/issues/I4DT6F Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit de895b43932cb47e69480540be7eca289af24f23 ] The use of l2cap_chan_del is not safe under a loop using list_for_each_entry. Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- net/bluetooth/l2cap_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 17520133093a..0ddbc415ce15 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -6055,7 +6055,7 @@ static inline int l2cap_ecred_conn_rsp(struct l2cap_conn *conn, struct l2cap_ecred_conn_rsp *rsp = (void *) data; struct hci_conn *hcon = conn->hcon; u16 mtu, mps, credits, result; - struct l2cap_chan *chan; + struct l2cap_chan *chan, *tmp; int err = 0, sec_level; int i = 0; @@ -6074,7 +6074,7 @@ static inline int l2cap_ecred_conn_rsp(struct l2cap_conn *conn, cmd_len -= sizeof(*rsp); - list_for_each_entry(chan, &conn->chan_l, list) { + list_for_each_entry_safe(chan, tmp, &conn->chan_l, list) { u16 dcid; if (chan->ident != cmd->ident || -- 2.20.1