[PATCH] Bluetooth: hci_event: Disconnect device when BIG sync is lost

[PATCH] Bluetooth: hci_event: Disconnect device when BIG sync is lost

[Yang Li via B4 Relay]

From: Yang Li <yang.li@amlogic.com>

When a BIG sync is lost, the device should be set to "disconnected".
This ensures symmetry with the ISO path setup, where the device is
marked as "connected" once the path is established. Without this
change, the device state remains inconsistent and may lead to a
memory leak.

Fixes: b2a5f2e1c127 ("Bluetooth: hci_event: Add support for handling LE BIG Sync Lost event")
Signed-off-by: Yang Li <yang.li@amlogic.com>
---
 net/bluetooth/hci_event.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 1686680a38c8..59aae893e0ed 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -6998,6 +6998,7 @@ static void hci_le_big_sync_lost_evt(struct hci_dev *hdev, void *data,
 {
 	struct hci_evt_le_big_sync_lost *ev = data;
 	struct hci_conn *bis, *conn;
+	bool mgmt_conn;
 
 	bt_dev_dbg(hdev, "big handle 0x%2.2x", ev->handle);
 
@@ -7016,6 +7017,10 @@ static void hci_le_big_sync_lost_evt(struct hci_dev *hdev, void *data,
 	while ((bis = hci_conn_hash_lookup_big_state(hdev, ev->handle,
 						     BT_CONNECTED,
 						     HCI_ROLE_SLAVE))) {
+		mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &bis->flags);
+		mgmt_device_disconnected(hdev, &bis->dst, bis->type, bis->dst_type,
+					 ev->reason, mgmt_conn);
+
 		clear_bit(HCI_CONN_BIG_SYNC, &bis->flags);
 		hci_disconn_cfm(bis, ev->reason);
 		hci_conn_del(bis);

---
base-commit: c921e5d14590381e6db7e451488b7b9ddc67a32c
change-id: 20250819-bis_dev_disconnect-31ad2aed27bc

Best regards,
-- 
Yang Li <yang.li@amlogic.com>

RE: Bluetooth: hci_event: Disconnect device when BIG sync is lost

[bluez.test.bot]

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This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=992895

---Test result---

Test Summary:
CheckPatch                    PENDING   0.53 seconds
GitLint                       PENDING   0.32 seconds
SubjectPrefix                 PASS      0.05 seconds
BuildKernel                   PASS      24.98 seconds
CheckAllWarning               PASS      27.85 seconds
CheckSparse                   WARNING   31.13 seconds
BuildKernel32                 PASS      25.04 seconds
TestRunnerSetup               PASS      486.90 seconds
TestRunner_l2cap-tester       PASS      25.28 seconds
TestRunner_iso-tester         FAIL      43.48 seconds
TestRunner_bnep-tester        PASS      6.04 seconds
TestRunner_mgmt-tester        FAIL      126.31 seconds
TestRunner_rfcomm-tester      PASS      9.37 seconds
TestRunner_sco-tester         PASS      14.87 seconds
TestRunner_ioctl-tester       PASS      10.30 seconds
TestRunner_mesh-tester        FAIL      11.48 seconds
TestRunner_smp-tester         PASS      8.62 seconds
TestRunner_userchan-tester    PASS      6.35 seconds
IncrementalBuild              PENDING   1.06 seconds

Details
##############################
Test: CheckPatch - PENDING
Desc: Run checkpatch.pl script
Output:

##############################
Test: GitLint - PENDING
Desc: Run gitlint
Output:

##############################
Test: CheckSparse - WARNING
Desc: Run sparse tool with linux kernel
Output:
net/bluetooth/hci_event.c: note: in included file (through include/net/bluetooth/hci_core.h):
##############################
Test: TestRunner_iso-tester - FAIL
Desc: Run iso-tester with test-runner
Output:
BUG: KASAN: slab-use-after-free in iso_conn_hold_unless_zero+0x76/0x1c0
Total: 135, Passed: 135 (100.0%), Failed: 0, Not Run: 0
##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 490, Passed: 485 (99.0%), Failed: 1, Not Run: 4

Failed Test Cases
LL Privacy - Set Device Flag 1 (Device Privacy)      Failed       0.167 seconds
##############################
Test: TestRunner_mesh-tester - FAIL
Desc: Run mesh-tester with test-runner
Output:
Total: 10, Passed: 8 (80.0%), Failed: 2, Not Run: 0

Failed Test Cases
Mesh - Send cancel - 1                               Timed out    1.969 seconds
Mesh - Send cancel - 2                               Timed out    1.996 seconds
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



---
Regards,
Linux Bluetooth