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* [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt
@ 2026-03-31  5:50 hkbinbin
  2026-03-31  6:37 ` bluez.test.bot
                   ` (5 more replies)
  0 siblings, 6 replies; 10+ messages in thread
From: hkbinbin @ 2026-03-31  5:50 UTC (permalink / raw)
  To: marcel, luiz.dentz, gregkh
  Cc: linux-bluetooth, linux-kernel, hkbinbin, stable

hci_le_create_big_complete_evt() iterates over BT_BOUND connections
for a BIG handle using a while loop, accessing ev->bis_handle[i++]
on each iteration.  However, there is no check that i < ev->num_bis
before the array access.

When a controller sends a LE_Create_BIG_Complete event with num_bis=0
while BT_BOUND connections exist for that BIG handle, the loop reads
beyond the valid bis_handle[] entries into adjacent heap memory.
Since the out-of-bounds values typically exceed HCI_CONN_HANDLE_MAX
(0x0EFF), hci_conn_set_handle() rejects them and the connection
remains in BT_BOUND state.  The same connection is then found again
by hci_conn_hash_lookup_big_state(), creating an infinite loop with
hci_dev_lock held that blocks all Bluetooth operations:

  Bluetooth: hci0: Invalid handle: 0x6b6b > 0x0eff
  Bluetooth: hci0: Invalid handle: 0x6b6b > 0x0eff
  ... (repeats ~177 times)
  Bluetooth: hci0: Opcode 0x2040 failed: -110
  Bluetooth: hci0: command 0x2040 tx timeout

The value 0x6b6b is the KASAN slab free poison byte (0x6b),
confirming reads of freed/uninitialized heap memory.

Fix this by adding a bounds check on i against ev->num_bis before
accessing the array.  Connections beyond the reported count are
cleaned up with HCI_ERROR_UNSPECIFIED to prevent the infinite loop.

Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes")
Cc: stable@vger.kernel.org
Signed-off-by: hkbinbin <hkbinbinbin@gmail.com>
---
 net/bluetooth/hci_event.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 286529d2e554..ebd7ae75b133 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -7085,6 +7085,12 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 			continue;
 		}
 
+		if (i >= ev->num_bis) {
+			hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
+			hci_conn_del(conn);
+			continue;
+		}
+
 		if (hci_conn_set_handle(conn,
 					__le16_to_cpu(ev->bis_handle[i++])))
 			continue;
-- 
2.51.0


^ permalink raw reply related	[flat|nested] 10+ messages in thread

* RE: Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt
  2026-03-31  5:50 [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt hkbinbin
@ 2026-03-31  6:37 ` bluez.test.bot
  2026-03-31 13:36 ` [PATCH] " Luiz Augusto von Dentz
                   ` (4 subsequent siblings)
  5 siblings, 0 replies; 10+ messages in thread
From: bluez.test.bot @ 2026-03-31  6:37 UTC (permalink / raw)
  To: linux-bluetooth, hkbinbinbin

[-- Attachment #1: Type: text/plain, Size: 2593 bytes --]

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=1074955

---Test result---

Test Summary:
CheckPatch                    PENDING   0.35 seconds
GitLint                       PENDING   0.24 seconds
SubjectPrefix                 PASS      0.12 seconds
BuildKernel                   PASS      25.88 seconds
CheckAllWarning               PASS      28.00 seconds
CheckSparse                   PASS      26.93 seconds
BuildKernel32                 PASS      25.20 seconds
TestRunnerSetup               PASS      563.48 seconds
TestRunner_l2cap-tester       PASS      27.49 seconds
TestRunner_iso-tester         PASS      41.46 seconds
TestRunner_bnep-tester        PASS      6.28 seconds
TestRunner_mgmt-tester        FAIL      112.29 seconds
TestRunner_rfcomm-tester      PASS      9.28 seconds
TestRunner_sco-tester         FAIL      14.09 seconds
TestRunner_ioctl-tester       PASS      9.95 seconds
TestRunner_mesh-tester        FAIL      11.48 seconds
TestRunner_smp-tester         PASS      10.67 seconds
TestRunner_userchan-tester    PASS      6.57 seconds
IncrementalBuild              PENDING   0.43 seconds

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

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

##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 494, Passed: 489 (99.0%), Failed: 1, Not Run: 4

Failed Test Cases
Read Exp Feature - Success                           Failed       0.104 seconds
##############################
Test: TestRunner_sco-tester - FAIL
Desc: Run sco-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
BUG: sleeping function called from invalid context at net/core/sock.c:3782
Total: 30, Passed: 30 (100.0%), Failed: 0, Not Run: 0
##############################
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    1.936 seconds
Mesh - Send cancel - 2                               Timed out    1.994 seconds
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



---
Regards,
Linux Bluetooth


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt
  2026-03-31  5:50 [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt hkbinbin
  2026-03-31  6:37 ` bluez.test.bot
@ 2026-03-31 13:36 ` Luiz Augusto von Dentz
  2026-03-31 14:13 ` [PATCH v2] Bluetooth: hci_event: fix OOB read " hkbinbin
                   ` (3 subsequent siblings)
  5 siblings, 0 replies; 10+ messages in thread
From: Luiz Augusto von Dentz @ 2026-03-31 13:36 UTC (permalink / raw)
  To: hkbinbin; +Cc: marcel, gregkh, linux-bluetooth, linux-kernel, stable

Hi Hkbinbin,

On Tue, Mar 31, 2026 at 1:50 AM hkbinbin <hkbinbinbin@gmail.com> wrote:
>
> hci_le_create_big_complete_evt() iterates over BT_BOUND connections
> for a BIG handle using a while loop, accessing ev->bis_handle[i++]
> on each iteration.  However, there is no check that i < ev->num_bis
> before the array access.
>
> When a controller sends a LE_Create_BIG_Complete event with num_bis=0
> while BT_BOUND connections exist for that BIG handle, the loop reads
> beyond the valid bis_handle[] entries into adjacent heap memory.
> Since the out-of-bounds values typically exceed HCI_CONN_HANDLE_MAX
> (0x0EFF), hci_conn_set_handle() rejects them and the connection
> remains in BT_BOUND state.  The same connection is then found again
> by hci_conn_hash_lookup_big_state(), creating an infinite loop with
> hci_dev_lock held that blocks all Bluetooth operations:
>
>   Bluetooth: hci0: Invalid handle: 0x6b6b > 0x0eff
>   Bluetooth: hci0: Invalid handle: 0x6b6b > 0x0eff
>   ... (repeats ~177 times)
>   Bluetooth: hci0: Opcode 0x2040 failed: -110
>   Bluetooth: hci0: command 0x2040 tx timeout
>
> The value 0x6b6b is the KASAN slab free poison byte (0x6b),
> confirming reads of freed/uninitialized heap memory.
>
> Fix this by adding a bounds check on i against ev->num_bis before
> accessing the array.  Connections beyond the reported count are
> cleaned up with HCI_ERROR_UNSPECIFIED to prevent the infinite loop.
>
> Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes")
> Cc: stable@vger.kernel.org
> Signed-off-by: hkbinbin <hkbinbinbin@gmail.com>
> ---
>  net/bluetooth/hci_event.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
> index 286529d2e554..ebd7ae75b133 100644
> --- a/net/bluetooth/hci_event.c
> +++ b/net/bluetooth/hci_event.c
> @@ -7085,6 +7085,12 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
>                         continue;
>                 }
>
> +               if (i >= ev->num_bis) {
> +                       hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
> +                       hci_conn_del(conn);
> +                       continue;
> +               }

https://sashiko.dev/#/patchset/20260331055032.1883139-1-hkbinbinbin%40gmail.com

Actually we might want to consider that all BISes failed if something
like this happens, so perhaps we should break and terminate if i !=
ev->num_bis


>                 if (hci_conn_set_handle(conn,
>                                         __le16_to_cpu(ev->bis_handle[i++])))
>                         continue;
> --
> 2.51.0
>


-- 
Luiz Augusto von Dentz

^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH v2] Bluetooth: hci_event: fix OOB read in hci_le_create_big_complete_evt
  2026-03-31  5:50 [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt hkbinbin
  2026-03-31  6:37 ` bluez.test.bot
  2026-03-31 13:36 ` [PATCH] " Luiz Augusto von Dentz
@ 2026-03-31 14:13 ` hkbinbin
  2026-03-31 14:13 ` hkbinbin
                   ` (2 subsequent siblings)
  5 siblings, 0 replies; 10+ messages in thread
From: hkbinbin @ 2026-03-31 14:13 UTC (permalink / raw)
  To: marcel, luiz.dentz
  Cc: gregkh, linux-bluetooth, linux-kernel, stable, hkbinbin

hci_le_create_big_complete_evt() iterates over BT_BOUND connections for
a BIG handle using a while loop, accessing ev->bis_handle[i++] on each
iteration.  However, there is no check that i stays within ev->num_bis
before the array access.

When a controller sends a LE_Create_BIG_Complete event with fewer
bis_handle entries than there are BT_BOUND connections for that BIG,
or with num_bis=0, the loop reads beyond the valid bis_handle[] flex
array into adjacent heap memory.  Since the out-of-bounds values
typically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle()
rejects them and the connection remains in BT_BOUND state.  The same
connection is then found again by hci_conn_hash_lookup_big_state(),
creating an infinite loop with hci_dev_lock held.

Fix this by:

  - Breaking out of the loop when i reaches ev->num_bis and cleaning
    up all remaining BT_BOUND connections, then terminating the BIG
    since a mismatch between the host and controller state indicates
    failure.

  - Properly cleaning up the connection when hci_conn_set_handle()
    fails, instead of calling continue which leaves it in BT_BOUND
    state where it would be found again by the same lookup on the
    next iteration.

Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes")
Cc: stable@vger.kernel.org
Signed-off-by: hkbinbin <hkbinbinbin@gmail.com>
---
 net/bluetooth/hci_event.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 286529d2e554..64b5b497c491 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -7085,9 +7085,15 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 			continue;
 		}
 
+		if (i >= ev->num_bis)
+			break;
+
 		if (hci_conn_set_handle(conn,
-					__le16_to_cpu(ev->bis_handle[i++])))
+					__le16_to_cpu(ev->bis_handle[i++]))) {
+			hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
+			hci_conn_del(conn);
 			continue;
+		}
 
 		conn->state = BT_CONNECTED;
 		set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
@@ -7096,7 +7102,22 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 		hci_iso_setup_path(conn);
 	}
 
-	if (!ev->status && !i)
+	if (conn) {
+		/* More bound connections than BIS handles reported by the
+		 * controller -- treat this as a failure for the entire BIG
+		 * and clean up any remaining BT_BOUND connections.
+		 */
+		do {
+			hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
+			hci_conn_del(conn);
+		} while ((conn = hci_conn_hash_lookup_big_state(hdev,
+							ev->handle,
+							BT_BOUND,
+							HCI_ROLE_MASTER)));
+
+		hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
+				   UINT_PTR(ev->handle), NULL);
+	} else if (!ev->status && !i) {
 		/* If no BISes have been connected for the BIG,
 		 * terminate. This is in case all bound connections
 		 * have been closed before the BIG creation
@@ -7104,6 +7125,7 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 		 */
 		hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
 				   UINT_PTR(ev->handle), NULL);
+	}
 
 	hci_dev_unlock(hdev);
 }
-- 
2.51.0


^ permalink raw reply related	[flat|nested] 10+ messages in thread

* [PATCH v2] Bluetooth: hci_event: fix OOB read in hci_le_create_big_complete_evt
  2026-03-31  5:50 [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt hkbinbin
                   ` (2 preceding siblings ...)
  2026-03-31 14:13 ` [PATCH v2] Bluetooth: hci_event: fix OOB read " hkbinbin
@ 2026-03-31 14:13 ` hkbinbin
  2026-03-31 15:22   ` [v2] " bluez.test.bot
  2026-04-09 20:21   ` bluez.test.bot
  2026-04-09 20:21 ` Bluetooth: hci_event: fix OOB read and infinite loop " bluez.test.bot
  2026-04-10 16:19 ` [PATCH v2] " hkbinbin
  5 siblings, 2 replies; 10+ messages in thread
From: hkbinbin @ 2026-03-31 14:13 UTC (permalink / raw)
  To: marcel, luiz.dentz
  Cc: gregkh, linux-bluetooth, linux-kernel, stable, hkbinbin

hci_le_create_big_complete_evt() iterates over BT_BOUND connections for
a BIG handle using a while loop, accessing ev->bis_handle[i++] on each
iteration.  However, there is no check that i stays within ev->num_bis
before the array access.

When a controller sends a LE_Create_BIG_Complete event with fewer
bis_handle entries than there are BT_BOUND connections for that BIG,
or with num_bis=0, the loop reads beyond the valid bis_handle[] flex
array into adjacent heap memory.  Since the out-of-bounds values
typically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle()
rejects them and the connection remains in BT_BOUND state.  The same
connection is then found again by hci_conn_hash_lookup_big_state(),
creating an infinite loop with hci_dev_lock held.

Fix this by:

  - Breaking out of the loop when i reaches ev->num_bis and cleaning
    up all remaining BT_BOUND connections, then terminating the BIG
    since a mismatch between the host and controller state indicates
    failure.

  - Properly cleaning up the connection when hci_conn_set_handle()
    fails, instead of calling continue which leaves it in BT_BOUND
    state where it would be found again by the same lookup on the
    next iteration.

Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes")
Cc: stable@vger.kernel.org
Signed-off-by: hkbinbin <hkbinbinbin@gmail.com>
---
 net/bluetooth/hci_event.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 286529d2e554..64b5b497c491 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -7085,9 +7085,15 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 			continue;
 		}
 
+		if (i >= ev->num_bis)
+			break;
+
 		if (hci_conn_set_handle(conn,
-					__le16_to_cpu(ev->bis_handle[i++])))
+					__le16_to_cpu(ev->bis_handle[i++]))) {
+			hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
+			hci_conn_del(conn);
 			continue;
+		}
 
 		conn->state = BT_CONNECTED;
 		set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
@@ -7096,7 +7102,22 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 		hci_iso_setup_path(conn);
 	}
 
-	if (!ev->status && !i)
+	if (conn) {
+		/* More bound connections than BIS handles reported by the
+		 * controller -- treat this as a failure for the entire BIG
+		 * and clean up any remaining BT_BOUND connections.
+		 */
+		do {
+			hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
+			hci_conn_del(conn);
+		} while ((conn = hci_conn_hash_lookup_big_state(hdev,
+							ev->handle,
+							BT_BOUND,
+							HCI_ROLE_MASTER)));
+
+		hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
+				   UINT_PTR(ev->handle), NULL);
+	} else if (!ev->status && !i) {
 		/* If no BISes have been connected for the BIG,
 		 * terminate. This is in case all bound connections
 		 * have been closed before the BIG creation
@@ -7104,6 +7125,7 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 		 */
 		hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
 				   UINT_PTR(ev->handle), NULL);
+	}
 
 	hci_dev_unlock(hdev);
 }
-- 
2.51.0


^ permalink raw reply related	[flat|nested] 10+ messages in thread

* RE: [v2] Bluetooth: hci_event: fix OOB read in hci_le_create_big_complete_evt
  2026-03-31 14:13 ` hkbinbin
@ 2026-03-31 15:22   ` bluez.test.bot
  2026-04-09 20:21   ` bluez.test.bot
  1 sibling, 0 replies; 10+ messages in thread
From: bluez.test.bot @ 2026-03-31 15:22 UTC (permalink / raw)
  To: linux-bluetooth, hkbinbinbin

[-- Attachment #1: Type: text/plain, Size: 2674 bytes --]

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=1075230

---Test result---

Test Summary:
CheckPatch                    PENDING   0.54 seconds
GitLint                       PENDING   0.30 seconds
SubjectPrefix                 PASS      0.12 seconds
BuildKernel                   PASS      26.97 seconds
CheckAllWarning               PASS      29.71 seconds
CheckSparse                   PASS      28.46 seconds
BuildKernel32                 PASS      26.25 seconds
TestRunnerSetup               PASS      580.72 seconds
TestRunner_l2cap-tester       PASS      28.52 seconds
TestRunner_iso-tester         PASS      44.02 seconds
TestRunner_bnep-tester        PASS      6.53 seconds
TestRunner_mgmt-tester        FAIL      115.81 seconds
TestRunner_rfcomm-tester      PASS      9.70 seconds
TestRunner_sco-tester         FAIL      14.98 seconds
TestRunner_ioctl-tester       PASS      10.72 seconds
TestRunner_mesh-tester        FAIL      12.54 seconds
TestRunner_smp-tester         PASS      10.94 seconds
TestRunner_userchan-tester    PASS      6.95 seconds
IncrementalBuild              PENDING   0.75 seconds

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

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

##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 494, Passed: 488 (98.8%), Failed: 2, Not Run: 4

Failed Test Cases
Read Exp Feature - Success                           Failed       0.113 seconds
LL Privacy - Start Discovery 1 (Disable RL)          Failed       0.174 seconds
##############################
Test: TestRunner_sco-tester - FAIL
Desc: Run sco-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
BUG: sleeping function called from invalid context at net/core/sock.c:3782
Total: 30, Passed: 30 (100.0%), Failed: 0, Not Run: 0
##############################
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    2.510 seconds
Mesh - Send cancel - 2                               Timed out    1.997 seconds
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



---
Regards,
Linux Bluetooth


^ permalink raw reply	[flat|nested] 10+ messages in thread

* RE: Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt
  2026-03-31  5:50 [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt hkbinbin
                   ` (3 preceding siblings ...)
  2026-03-31 14:13 ` hkbinbin
@ 2026-04-09 20:21 ` bluez.test.bot
  2026-04-10 16:19 ` [PATCH v2] " hkbinbin
  5 siblings, 0 replies; 10+ messages in thread
From: bluez.test.bot @ 2026-04-09 20:21 UTC (permalink / raw)
  To: linux-bluetooth, hkbinbinbin

[-- Attachment #1: Type: text/plain, Size: 6877 bytes --]

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=1074955

---Test result---

Test Summary:
CheckPatch                    PENDING   0.38 seconds
GitLint                       PENDING   0.27 seconds
SubjectPrefix                 PASS      0.12 seconds
BuildKernel                   PASS      26.03 seconds
CheckAllWarning               PASS      28.49 seconds
CheckSparse                   PASS      33.68 seconds
BuildKernel32                 PASS      25.50 seconds
TestRunnerSetup               PASS      561.70 seconds
TestRunner_l2cap-tester       PASS      27.46 seconds
TestRunner_iso-tester         PASS      36.85 seconds
TestRunner_bnep-tester        PASS      6.26 seconds
TestRunner_mgmt-tester        FAIL      115.85 seconds
TestRunner_rfcomm-tester      PASS      9.88 seconds
TestRunner_sco-tester         FAIL      15.12 seconds
TestRunner_ioctl-tester       PASS      10.36 seconds
TestRunner_mesh-tester        FAIL      12.61 seconds
TestRunner_smp-tester         PASS      9.16 seconds
TestRunner_userchan-tester    PASS      6.88 seconds
TestRunner_6lowpan-tester     FAIL      9.59 seconds
IncrementalBuild              PENDING   0.33 seconds

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

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

##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 494, Passed: 489 (99.0%), Failed: 1, Not Run: 4

Failed Test Cases
Read Exp Feature - Success                           Failed       0.115 seconds
##############################
Test: TestRunner_sco-tester - FAIL
Desc: Run sco-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
7.0.0-rc2-gae498cc69c41 #1 Not tainted
------------------------------------------------------
kworker/u5:2/116 is trying to acquire lock:
ffff888002086240 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x358/0x8d0

but task is already holding lock:
ffff8880025f9420 (&conn->lock){+.+.}-{3:3}, at: sco_connect_cfm+0x22d/0x8d0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&conn->lock){+.+.}-{3:3}:
       lock_acquire+0xf7/0x2c0
       _raw_spin_lock+0x2a/0x40
       sco_sock_connect+0x4d7/0x1280
       __sys_connect+0x1a3/0x260
       __x64_sys_connect+0x6e/0xb0
       do_syscall_64+0xa0/0x570
       entry_SYSCALL_64_after_hwframe+0x74/0x7c

-> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}:
       check_prev_add+0xe9/0xc70
       __lock_acquire+0x1457/0x1df0
       lock_acquire+0xf7/0x2c0
       lock_sock_nested+0x36/0xd0
       sco_connect_cfm+0x358/0x8d0
       hci_sync_conn_complete_evt+0x3d3/0x8e0
       hci_event_packet+0x74f/0xb10
       hci_rx_work+0x398/0xd00
       process_scheduled_works+0xb16/0x1ac0
       worker_thread+0x4ff/0xba0
       kthread+0x368/0x490
       ret_from_fork+0x498/0x7e0
       ret_from_fork_asm+0x19/0x30

other info that might help us debug this:

...
BUG: sleeping function called from invalid context at net/core/sock.c:3782
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 116, name: kworker/u5:2
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
CPU: 0 UID: 0 PID: 116 Comm: kworker/u5:2 Not tainted 7.0.0-rc2-gae498cc69c41 #1 PREEMPT(lazy) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x49/0x60
 __might_resched+0x2ea/0x500
 lock_sock_nested+0x47/0xd0
 ? sco_connect_cfm+0x358/0x8d0
 sco_connect_cfm+0x358/0x8d0
 ? hci_debugfs_create_conn+0x190/0x210
 ? __pfx_sco_connect_cfm+0x10/0x10
 hci_sync_conn_complete_evt+0x3d3/0x8e0
 hci_event_packet+0x74f/0xb10
 ? __pfx_hci_sync_conn_complete_evt+0x10/0x10
 ? __pfx_hci_event_packet+0x10/0x10
 ? mark_held_locks+0x49/0x80
 ? lockdep_hardirqs_on_prepare+0xd4/0x180
 ? _raw_spin_unlock_irqrestore+0x2c/0x50
 hci_rx_work+0x398/0xd00
 process_scheduled_works+0xb16/0x1ac0
 ? __pfx_process_scheduled_works+0x10/0x10
 ? lock_acquire+0xf7/0x2c0
 ? lock_is_held_type+0x9b/0x110
 ? __pfx_hci_rx_work+0x10/0x10
 worker_thread+0x4ff/0xba0
 ? _raw_spin_unlock_irqrestore+0x2c/0x50
 ? __pfx_worker_thread+0x10/0x10
 kthread+0x368/0x490
 ? _raw_spin_unlock_irq+0x23/0x40
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x498/0x7e0
 ? __pfx_ret_from_fork+0x10/0x10
 ? __switch_to+0x9e4/0xe50
 ? __switch_to_asm+0x32/0x60
...
Total: 30, Passed: 30 (100.0%), Failed: 0, Not Run: 0
##############################
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    2.099 seconds
Mesh - Send cancel - 2                               Timed out    2.008 seconds
##############################
Test: TestRunner_6lowpan-tester - FAIL
Desc: Run 6lowpan-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
7.0.0-rc2-gae498cc69c41 #1 Not tainted
------------------------------------------------------
kworker/0:1/11 is trying to acquire lock:
ffff8880026dd140 ((wq_completion)hci0#2){+.+.}-{0:0}, at: touch_wq_lockdep_map+0x75/0x180

but task is already holding lock:
ffffffff92c4d720 (rtnl_mutex){+.+.}-{4:4}, at: lowpan_unregister_netdev+0xd/0x30

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (rtnl_mutex){+.+.}-{4:4}:
       lock_acquire+0xf7/0x2c0
       __mutex_lock+0x16b/0x1fc0
       lowpan_register_netdev+0x11/0x30
       chan_ready_cb+0x836/0xd00
       l2cap_recv_frame+0x6a06/0x8920
       l2cap_recv_acldata+0x790/0xdf0
       hci_rx_work+0x500/0xd00
       process_scheduled_works+0xb16/0x1ac0
       worker_thread+0x4ff/0xba0
       kthread+0x368/0x490
       ret_from_fork+0x498/0x7e0
       ret_from_fork_asm+0x19/0x30

-> #3 (&chan->lock#3/1){+.+.}-{4:4}:
       lock_acquire+0xf7/0x2c0
       __mutex_lock+0x16b/0x1fc0
       l2cap_chan_connect+0x74e/0x1980
       lowpan_control_write+0x523/0x660
       full_proxy_write+0x10b/0x190
       vfs_write+0x1c0/0xf60
       ksys_write+0xf1/0x1d0
       do_syscall_64+0xa0/0x570
       entry_SYSCALL_64_after_hwframe+0x74/0x7c

-> #2 (&conn->lock){+.+.}-{4:4}:
...
Total: 8, Passed: 8 (100.0%), Failed: 0, Not Run: 0
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



https://github.com/bluez/bluetooth-next/pull/39/checks

---
Regards,
Linux Bluetooth


^ permalink raw reply	[flat|nested] 10+ messages in thread

* RE: [v2] Bluetooth: hci_event: fix OOB read in hci_le_create_big_complete_evt
  2026-03-31 14:13 ` hkbinbin
  2026-03-31 15:22   ` [v2] " bluez.test.bot
@ 2026-04-09 20:21   ` bluez.test.bot
  1 sibling, 0 replies; 10+ messages in thread
From: bluez.test.bot @ 2026-04-09 20:21 UTC (permalink / raw)
  To: linux-bluetooth, hkbinbinbin

[-- Attachment #1: Type: text/plain, Size: 6877 bytes --]

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=1075230

---Test result---

Test Summary:
CheckPatch                    PENDING   0.43 seconds
GitLint                       PENDING   0.35 seconds
SubjectPrefix                 PASS      0.12 seconds
BuildKernel                   PASS      27.23 seconds
CheckAllWarning               PASS      30.20 seconds
CheckSparse                   PASS      29.00 seconds
BuildKernel32                 PASS      31.33 seconds
TestRunnerSetup               PASS      583.67 seconds
TestRunner_l2cap-tester       PASS      28.78 seconds
TestRunner_iso-tester         PASS      42.38 seconds
TestRunner_bnep-tester        PASS      6.52 seconds
TestRunner_mgmt-tester        FAIL      114.53 seconds
TestRunner_rfcomm-tester      PASS      9.55 seconds
TestRunner_sco-tester         FAIL      14.36 seconds
TestRunner_ioctl-tester       PASS      10.20 seconds
TestRunner_mesh-tester        FAIL      12.56 seconds
TestRunner_smp-tester         PASS      9.06 seconds
TestRunner_userchan-tester    PASS      6.95 seconds
TestRunner_6lowpan-tester     FAIL      8.66 seconds
IncrementalBuild              PENDING   0.26 seconds

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

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

##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 494, Passed: 489 (99.0%), Failed: 1, Not Run: 4

Failed Test Cases
Read Exp Feature - Success                           Failed       0.107 seconds
##############################
Test: TestRunner_sco-tester - FAIL
Desc: Run sco-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
7.0.0-rc2-g9f419c47155d #1 Not tainted
------------------------------------------------------
kworker/u5:2/117 is trying to acquire lock:
ffff8880020be240 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x358/0x8d0

but task is already holding lock:
ffff888002094c20 (&conn->lock){+.+.}-{3:3}, at: sco_connect_cfm+0x22d/0x8d0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&conn->lock){+.+.}-{3:3}:
       lock_acquire+0xf7/0x2c0
       _raw_spin_lock+0x2a/0x40
       sco_sock_connect+0x4d7/0x1280
       __sys_connect+0x1a3/0x260
       __x64_sys_connect+0x6e/0xb0
       do_syscall_64+0xa0/0x570
       entry_SYSCALL_64_after_hwframe+0x74/0x7c

-> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}:
       check_prev_add+0xe9/0xc70
       __lock_acquire+0x1457/0x1df0
       lock_acquire+0xf7/0x2c0
       lock_sock_nested+0x36/0xd0
       sco_connect_cfm+0x358/0x8d0
       hci_sync_conn_complete_evt+0x3d3/0x8e0
       hci_event_packet+0x74f/0xb10
       hci_rx_work+0x398/0xd00
       process_scheduled_works+0xb16/0x1ac0
       worker_thread+0x4ff/0xba0
       kthread+0x368/0x490
       ret_from_fork+0x498/0x7e0
       ret_from_fork_asm+0x19/0x30

other info that might help us debug this:

...
BUG: sleeping function called from invalid context at net/core/sock.c:3782
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 117, name: kworker/u5:2
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
CPU: 0 UID: 0 PID: 117 Comm: kworker/u5:2 Not tainted 7.0.0-rc2-g9f419c47155d #1 PREEMPT(lazy) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x49/0x60
 __might_resched+0x2ea/0x500
 lock_sock_nested+0x47/0xd0
 ? sco_connect_cfm+0x358/0x8d0
 sco_connect_cfm+0x358/0x8d0
 ? hci_debugfs_create_conn+0x190/0x210
 ? __pfx_sco_connect_cfm+0x10/0x10
 hci_sync_conn_complete_evt+0x3d3/0x8e0
 hci_event_packet+0x74f/0xb10
 ? __pfx_hci_sync_conn_complete_evt+0x10/0x10
 ? __pfx_hci_event_packet+0x10/0x10
 ? mark_held_locks+0x49/0x80
 ? lockdep_hardirqs_on_prepare+0xd4/0x180
 ? _raw_spin_unlock_irqrestore+0x2c/0x50
 hci_rx_work+0x398/0xd00
 process_scheduled_works+0xb16/0x1ac0
 ? __pfx_process_scheduled_works+0x10/0x10
 ? lock_acquire+0xf7/0x2c0
 ? lock_is_held_type+0x9b/0x110
 ? __pfx_hci_rx_work+0x10/0x10
 worker_thread+0x4ff/0xba0
 ? _raw_spin_unlock_irqrestore+0x2c/0x50
 ? __pfx_worker_thread+0x10/0x10
 kthread+0x368/0x490
 ? _raw_spin_unlock_irq+0x23/0x40
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x498/0x7e0
 ? __pfx_ret_from_fork+0x10/0x10
 ? __switch_to+0x9e4/0xe50
 ? __switch_to_asm+0x32/0x60
...
Total: 30, Passed: 30 (100.0%), Failed: 0, Not Run: 0
##############################
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    2.659 seconds
Mesh - Send cancel - 2                               Timed out    1.992 seconds
##############################
Test: TestRunner_6lowpan-tester - FAIL
Desc: Run 6lowpan-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
7.0.0-rc2-g9f419c47155d #1 Not tainted
------------------------------------------------------
kworker/0:1/11 is trying to acquire lock:
ffff8880026f4940 ((wq_completion)hci0#2){+.+.}-{0:0}, at: touch_wq_lockdep_map+0x75/0x180

but task is already holding lock:
ffffffff9e44d720 (rtnl_mutex){+.+.}-{4:4}, at: lowpan_unregister_netdev+0xd/0x30

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (rtnl_mutex){+.+.}-{4:4}:
       lock_acquire+0xf7/0x2c0
       __mutex_lock+0x16b/0x1fc0
       lowpan_register_netdev+0x11/0x30
       chan_ready_cb+0x836/0xd00
       l2cap_recv_frame+0x6a06/0x8920
       l2cap_recv_acldata+0x790/0xdf0
       hci_rx_work+0x500/0xd00
       process_scheduled_works+0xb16/0x1ac0
       worker_thread+0x4ff/0xba0
       kthread+0x368/0x490
       ret_from_fork+0x498/0x7e0
       ret_from_fork_asm+0x19/0x30

-> #3 (&chan->lock#3/1){+.+.}-{4:4}:
       lock_acquire+0xf7/0x2c0
       __mutex_lock+0x16b/0x1fc0
       l2cap_chan_connect+0x74e/0x1980
       lowpan_control_write+0x523/0x660
       full_proxy_write+0x10b/0x190
       vfs_write+0x1c0/0xf60
       ksys_write+0xf1/0x1d0
       do_syscall_64+0xa0/0x570
       entry_SYSCALL_64_after_hwframe+0x74/0x7c

-> #2 (&conn->lock){+.+.}-{4:4}:
...
Total: 8, Passed: 8 (100.0%), Failed: 0, Not Run: 0
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



https://github.com/bluez/bluetooth-next/pull/40/checks

---
Regards,
Linux Bluetooth


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH v2] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt
  2026-03-31  5:50 [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt hkbinbin
                   ` (4 preceding siblings ...)
  2026-04-09 20:21 ` Bluetooth: hci_event: fix OOB read and infinite loop " bluez.test.bot
@ 2026-04-10 16:19 ` hkbinbin
  2026-04-10 16:54   ` [v2] " bluez.test.bot
  5 siblings, 1 reply; 10+ messages in thread
From: hkbinbin @ 2026-04-10 16:19 UTC (permalink / raw)
  To: marcel, luiz.dentz
  Cc: gregkh, linux-bluetooth, linux-kernel, stable, ZhiTao Ou

From: ZhiTao Ou <hkbinbinbin@gmail.com>

hci_le_create_big_complete_evt() iterates over BT_BOUND connections for
a BIG handle using a while loop, accessing ev->bis_handle[i++] on each
iteration.  However, there is no check that i stays within ev->num_bis
before the array access.

When a controller sends a LE_Create_BIG_Complete event with fewer
bis_handle entries than there are BT_BOUND connections for that BIG,
or with num_bis=0, the loop reads beyond the valid bis_handle[] flex
array into adjacent heap memory.  Since the out-of-bounds values
typically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle()
rejects them and the connection remains in BT_BOUND state.  The same
connection is then found again by hci_conn_hash_lookup_big_state(),
creating an infinite loop with hci_dev_lock held.

Fix this by:

  - Breaking out of the loop when i reaches ev->num_bis and cleaning
    up all remaining BT_BOUND connections, then terminating the BIG
    since a mismatch between the host and controller state indicates
    failure.

  - Properly cleaning up the connection when hci_conn_set_handle()
    fails, instead of calling continue which leaves it in BT_BOUND
    state where it would be found again by the same lookup on the
    next iteration.

Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes")
Cc: stable@vger.kernel.org
Signed-off-by: ZhiTao Ou <hkbinbinbin@gmail.com>
---
 net/bluetooth/hci_event.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 286529d2e554..64b5b497c491 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -7085,9 +7085,15 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 			continue;
 		}
 
+		if (i >= ev->num_bis)
+			break;
+
 		if (hci_conn_set_handle(conn,
-					__le16_to_cpu(ev->bis_handle[i++])))
+					__le16_to_cpu(ev->bis_handle[i++]))) {
+			hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
+			hci_conn_del(conn);
 			continue;
+		}
 
 		conn->state = BT_CONNECTED;
 		set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
@@ -7096,7 +7102,22 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 		hci_iso_setup_path(conn);
 	}
 
-	if (!ev->status && !i)
+	if (conn) {
+		/* More bound connections than BIS handles reported by the
+		 * controller -- treat this as a failure for the entire BIG
+		 * and clean up any remaining BT_BOUND connections.
+		 */
+		do {
+			hci_connect_cfm(conn, HCI_ERROR_UNSPECIFIED);
+			hci_conn_del(conn);
+		} while ((conn = hci_conn_hash_lookup_big_state(hdev,
+							ev->handle,
+							BT_BOUND,
+							HCI_ROLE_MASTER)));
+
+		hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
+				   UINT_PTR(ev->handle), NULL);
+	} else if (!ev->status && !i) {
 		/* If no BISes have been connected for the BIG,
 		 * terminate. This is in case all bound connections
 		 * have been closed before the BIG creation
@@ -7104,6 +7125,7 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 		 */
 		hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
 				   UINT_PTR(ev->handle), NULL);
+	}
 
 	hci_dev_unlock(hdev);
 }
-- 
2.51.0


^ permalink raw reply related	[flat|nested] 10+ messages in thread

* RE: [v2] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt
  2026-04-10 16:19 ` [PATCH v2] " hkbinbin
@ 2026-04-10 16:54   ` bluez.test.bot
  0 siblings, 0 replies; 10+ messages in thread
From: bluez.test.bot @ 2026-04-10 16:54 UTC (permalink / raw)
  To: linux-bluetooth, hkbinbinbin

[-- Attachment #1: Type: text/plain, Size: 6869 bytes --]

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=1079845

---Test result---

Test Summary:
CheckPatch                    PENDING   0.55 seconds
GitLint                       PENDING   0.31 seconds
SubjectPrefix                 PASS      0.08 seconds
BuildKernel                   PASS      24.13 seconds
CheckAllWarning               PASS      26.30 seconds
CheckSparse                   PASS      31.36 seconds
BuildKernel32                 PASS      23.23 seconds
TestRunnerSetup               PASS      520.97 seconds
TestRunner_l2cap-tester       PASS      27.53 seconds
TestRunner_iso-tester         PASS      41.48 seconds
TestRunner_bnep-tester        PASS      6.29 seconds
TestRunner_mgmt-tester        FAIL      115.18 seconds
TestRunner_rfcomm-tester      PASS      9.51 seconds
TestRunner_sco-tester         FAIL      14.39 seconds
TestRunner_ioctl-tester       PASS      10.31 seconds
TestRunner_mesh-tester        FAIL      12.55 seconds
TestRunner_smp-tester         PASS      8.73 seconds
TestRunner_userchan-tester    PASS      6.89 seconds
TestRunner_6lowpan-tester     FAIL      8.81 seconds
IncrementalBuild              PENDING   0.29 seconds

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

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

##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 494, Passed: 489 (99.0%), Failed: 1, Not Run: 4

Failed Test Cases
Read Exp Feature - Success                           Failed       0.119 seconds
##############################
Test: TestRunner_sco-tester - FAIL
Desc: Run sco-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
7.0.0-rc2-gf3185b64cf7e #1 Not tainted
------------------------------------------------------
kworker/u5:2/117 is trying to acquire lock:
ffff888001946240 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x358/0x8d0

but task is already holding lock:
ffff8880025f4220 (&conn->lock){+.+.}-{3:3}, at: sco_connect_cfm+0x22d/0x8d0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&conn->lock){+.+.}-{3:3}:
       lock_acquire+0xf7/0x2c0
       _raw_spin_lock+0x2a/0x40
       sco_sock_connect+0x4d7/0x1280
       __sys_connect+0x1a3/0x260
       __x64_sys_connect+0x6e/0xb0
       do_syscall_64+0xa0/0x570
       entry_SYSCALL_64_after_hwframe+0x74/0x7c

-> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}:
       check_prev_add+0xe9/0xc70
       __lock_acquire+0x1457/0x1df0
       lock_acquire+0xf7/0x2c0
       lock_sock_nested+0x36/0xd0
       sco_connect_cfm+0x358/0x8d0
       hci_sync_conn_complete_evt+0x3d3/0x8e0
       hci_event_packet+0x74f/0xb10
       hci_rx_work+0x398/0xd00
       process_scheduled_works+0xb16/0x1ac0
       worker_thread+0x4ff/0xba0
       kthread+0x368/0x490
       ret_from_fork+0x498/0x7e0
       ret_from_fork_asm+0x19/0x30

other info that might help us debug this:

...
BUG: sleeping function called from invalid context at net/core/sock.c:3782
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 117, name: kworker/u5:2
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
CPU: 0 UID: 0 PID: 117 Comm: kworker/u5:2 Not tainted 7.0.0-rc2-gf3185b64cf7e #1 PREEMPT(lazy) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x49/0x60
 __might_resched+0x2ea/0x500
 lock_sock_nested+0x47/0xd0
 ? sco_connect_cfm+0x358/0x8d0
 sco_connect_cfm+0x358/0x8d0
 ? hci_debugfs_create_conn+0x190/0x210
 ? __pfx_sco_connect_cfm+0x10/0x10
 hci_sync_conn_complete_evt+0x3d3/0x8e0
 hci_event_packet+0x74f/0xb10
 ? __pfx_hci_sync_conn_complete_evt+0x10/0x10
 ? __pfx_hci_event_packet+0x10/0x10
 ? mark_held_locks+0x49/0x80
 ? lockdep_hardirqs_on_prepare+0xd4/0x180
 ? _raw_spin_unlock_irqrestore+0x2c/0x50
 hci_rx_work+0x398/0xd00
 process_scheduled_works+0xb16/0x1ac0
 ? __pfx_process_scheduled_works+0x10/0x10
 ? lock_acquire+0xf7/0x2c0
 ? lock_is_held_type+0x9b/0x110
 ? __pfx_hci_rx_work+0x10/0x10
 worker_thread+0x4ff/0xba0
 ? _raw_spin_unlock_irqrestore+0x2c/0x50
 ? __pfx_worker_thread+0x10/0x10
 kthread+0x368/0x490
 ? _raw_spin_unlock_irq+0x23/0x40
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x498/0x7e0
 ? __pfx_ret_from_fork+0x10/0x10
 ? __switch_to+0x9e4/0xe50
 ? __switch_to_asm+0x32/0x60
...
Total: 30, Passed: 30 (100.0%), Failed: 0, Not Run: 0
##############################
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    2.758 seconds
Mesh - Send cancel - 2                               Timed out    1.995 seconds
##############################
Test: TestRunner_6lowpan-tester - FAIL
Desc: Run 6lowpan-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
7.0.0-rc2-gf3185b64cf7e #1 Not tainted
------------------------------------------------------
kworker/0:0/9 is trying to acquire lock:
ffff8880026d8940 ((wq_completion)hci0#2){+.+.}-{0:0}, at: touch_wq_lockdep_map+0x75/0x180

but task is already holding lock:
ffffffffbaa4d720 (rtnl_mutex){+.+.}-{4:4}, at: lowpan_unregister_netdev+0xd/0x30

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (rtnl_mutex){+.+.}-{4:4}:
       lock_acquire+0xf7/0x2c0
       __mutex_lock+0x16b/0x1fc0
       lowpan_register_netdev+0x11/0x30
       chan_ready_cb+0x836/0xd00
       l2cap_recv_frame+0x6a06/0x8920
       l2cap_recv_acldata+0x790/0xdf0
       hci_rx_work+0x500/0xd00
       process_scheduled_works+0xb16/0x1ac0
       worker_thread+0x4ff/0xba0
       kthread+0x368/0x490
       ret_from_fork+0x498/0x7e0
       ret_from_fork_asm+0x19/0x30

-> #3 (&chan->lock#3/1){+.+.}-{4:4}:
       lock_acquire+0xf7/0x2c0
       __mutex_lock+0x16b/0x1fc0
       l2cap_chan_connect+0x74e/0x1980
       lowpan_control_write+0x523/0x660
       full_proxy_write+0x10b/0x190
       vfs_write+0x1c0/0xf60
       ksys_write+0xf1/0x1d0
       do_syscall_64+0xa0/0x570
       entry_SYSCALL_64_after_hwframe+0x74/0x7c

-> #2 (&conn->lock){+.+.}-{4:4}:
...
Total: 8, Passed: 8 (100.0%), Failed: 0, Not Run: 0
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



https://github.com/bluez/bluetooth-next/pull/63

---
Regards,
Linux Bluetooth


^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2026-04-10 16:54 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-03-31  5:50 [PATCH] Bluetooth: hci_event: fix OOB read and infinite loop in hci_le_create_big_complete_evt hkbinbin
2026-03-31  6:37 ` bluez.test.bot
2026-03-31 13:36 ` [PATCH] " Luiz Augusto von Dentz
2026-03-31 14:13 ` [PATCH v2] Bluetooth: hci_event: fix OOB read " hkbinbin
2026-03-31 14:13 ` hkbinbin
2026-03-31 15:22   ` [v2] " bluez.test.bot
2026-04-09 20:21   ` bluez.test.bot
2026-04-09 20:21 ` Bluetooth: hci_event: fix OOB read and infinite loop " bluez.test.bot
2026-04-10 16:19 ` [PATCH v2] " hkbinbin
2026-04-10 16:54   ` [v2] " bluez.test.bot

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