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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-21 00:46:39 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-21 00:46:39 +0300 |
commit | 57f1f9dd3abea322173ea75a15887ccf14bbbe51 (patch) | |
tree | c646994b97061befcecf089bf3b2bf64e9ba9d4e /net/bluetooth/hci_core.c | |
parent | e599e16c16a16be9907fb00608212df56d08d57b (diff) | |
parent | 75d42b351f564b2568392a4e53cd74a3d9df4af2 (diff) | |
download | linux-57f1f9dd3abea322173ea75a15887ccf14bbbe51.tar.xz |
Merge tag 'net-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from BPF, netfilter, bluetooth and CAN.
Current release - regressions:
- eth: r8169: multiple fixes for PCIe ASPM-related problems
- vrf: fix RCU lockdep splat in output path
Previous releases - regressions:
- gso: fall back to SW segmenting with GSO_UDP_L4 dodgy bit set
- dsa: mv88e6xxx: do a final check before timing out when polling
- nf_tables: fix sleep in atomic in nft_chain_validate
Previous releases - always broken:
- sched: fix undoing tcf_bind_filter() in multiple classifiers
- bpf, arm64: fix BTI type used for freplace attached functions
- can: gs_usb: fix time stamp counter initialization
- nft_set_pipapo: fix improper element removal (leading to UAF)
Misc:
- net: support STP on bridge in non-root netns, STP prevents packet
loops so not supporting it results in freezing systems of
unsuspecting users, and in turn very upset noises being made
- fix kdoc warnings
- annotate various bits of TCP state to prevent data races"
* tag 'net-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (95 commits)
net: phy: prevent stale pointer dereference in phy_init()
tcp: annotate data-races around fastopenq.max_qlen
tcp: annotate data-races around icsk->icsk_user_timeout
tcp: annotate data-races around tp->notsent_lowat
tcp: annotate data-races around rskq_defer_accept
tcp: annotate data-races around tp->linger2
tcp: annotate data-races around icsk->icsk_syn_retries
tcp: annotate data-races around tp->keepalive_probes
tcp: annotate data-races around tp->keepalive_intvl
tcp: annotate data-races around tp->keepalive_time
tcp: annotate data-races around tp->tsoffset
tcp: annotate data-races around tp->tcp_tx_delay
Bluetooth: MGMT: Use correct address for memcpy()
Bluetooth: btusb: Fix bluetooth on Intel Macbook 2014
Bluetooth: SCO: fix sco_conn related locking and validity issues
Bluetooth: hci_conn: return ERR_PTR instead of NULL when there is no link
Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
Bluetooth: coredump: fix building with coredump disabled
Bluetooth: ISO: fix iso_conn related locking and validity issues
Bluetooth: hci_event: call disconnect callback before deleting conn
...
Diffstat (limited to 'net/bluetooth/hci_core.c')
-rw-r--r-- | net/bluetooth/hci_core.c | 42 |
1 files changed, 34 insertions, 8 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 48917c68358d..1ec83985f1ab 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1972,6 +1972,7 @@ static int hci_remove_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor) { int status = 0; + int handle; switch (hci_get_adv_monitor_offload_ext(hdev)) { case HCI_ADV_MONITOR_EXT_NONE: /* also goes here when powered off */ @@ -1980,9 +1981,10 @@ static int hci_remove_adv_monitor(struct hci_dev *hdev, goto free_monitor; case HCI_ADV_MONITOR_EXT_MSFT: + handle = monitor->handle; status = msft_remove_monitor(hdev, monitor); bt_dev_dbg(hdev, "%s remove monitor %d msft status %d", - hdev->name, monitor->handle, status); + hdev->name, handle, status); break; } @@ -2249,22 +2251,46 @@ struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, return NULL; } -/* This function requires the caller holds hdev->lock */ +/* This function requires the caller holds hdev->lock or rcu_read_lock */ struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, bdaddr_t *addr, u8 addr_type) { struct hci_conn_params *param; - list_for_each_entry(param, list, action) { + rcu_read_lock(); + + list_for_each_entry_rcu(param, list, action) { if (bacmp(¶m->addr, addr) == 0 && - param->addr_type == addr_type) + param->addr_type == addr_type) { + rcu_read_unlock(); return param; + } } + rcu_read_unlock(); + return NULL; } /* This function requires the caller holds hdev->lock */ +void hci_pend_le_list_del_init(struct hci_conn_params *param) +{ + if (list_empty(¶m->action)) + return; + + list_del_rcu(¶m->action); + synchronize_rcu(); + INIT_LIST_HEAD(¶m->action); +} + +/* This function requires the caller holds hdev->lock */ +void hci_pend_le_list_add(struct hci_conn_params *param, + struct list_head *list) +{ + list_add_rcu(¶m->action, list); +} + +/* This function requires the caller holds hdev->lock */ struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) { @@ -2297,14 +2323,15 @@ struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, return params; } -static void hci_conn_params_free(struct hci_conn_params *params) +void hci_conn_params_free(struct hci_conn_params *params) { + hci_pend_le_list_del_init(params); + if (params->conn) { hci_conn_drop(params->conn); hci_conn_put(params->conn); } - list_del(¶ms->action); list_del(¶ms->list); kfree(params); } @@ -2342,8 +2369,7 @@ void hci_conn_params_clear_disabled(struct hci_dev *hdev) continue; } - list_del(¶ms->list); - kfree(params); + hci_conn_params_free(params); } BT_DBG("All LE disabled connection parameters were removed"); |