$ uname -r 4.16.1-300.fc28.x86_64+debug When I pairing headset SONY MDR-XB950B1: [ 4488.566046] ============================================ [ 4488.566047] WARNING: possible recursive locking detected [ 4488.566049] 4.16.1-300.fc28.x86_64+debug #1 Not tainted [ 4488.566050] -------------------------------------------- [ 4488.566052] kworker/u17:2/680 is trying to acquire lock: [ 4488.566054] (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<000000008d97dbdd>] bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 4488.566073] but task is already holding lock: [ 4488.566075] (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<0000000033ac331c>] l2cap_sock_new_connection_cb+0x18/0xa0 [bluetooth] [ 4488.566090] other info that might help us debug this: [ 4488.566092] Possible unsafe locking scenario: [ 4488.566093] CPU0 [ 4488.566095] ---- [ 4488.566096] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [ 4488.566098] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [ 4488.566100] *** DEADLOCK *** [ 4488.566102] May be due to missing lock nesting notation [ 4488.566104] 5 locks held by kworker/u17:2/680: [ 4488.566105] #0: ((wq_completion)"%s"hdev->name#2){+.+.}, at: [<0000000087e4bbc5>] process_one_work+0x1d7/0x630 [ 4488.566112] #1: ((work_completion)(&hdev->rx_work)){+.+.}, at: [<0000000087e4bbc5>] process_one_work+0x1d7/0x630 [ 4488.566116] #2: (&conn->chan_lock){+.+.}, at: [<00000000ffc63d0c>] l2cap_connect+0x8f/0x5a0 [bluetooth] [ 4488.566132] #3: (&chan->lock/2){+.+.}, at: [<00000000393c41d7>] l2cap_connect+0xa9/0x5a0 [bluetooth] [ 4488.566155] #4: (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<0000000033ac331c>] l2cap_sock_new_connection_cb+0x18/0xa0 [bluetooth] [ 4488.566168] stack backtrace: [ 4488.566171] CPU: 0 PID: 680 Comm: kworker/u17:2 Not tainted 4.16.1-300.fc28.x86_64+debug #1 [ 4488.566173] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [ 4488.566183] Workqueue: hci0 hci_rx_work [bluetooth] [ 4488.566185] Call Trace: [ 4488.566190] dump_stack+0x85/0xbf [ 4488.566193] __lock_acquire.cold.62+0x158/0x227 [ 4488.566198] ? mark_held_locks+0x57/0x80 [ 4488.566201] ? lock_acquire+0x9e/0x1b0 [ 4488.566211] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 4488.566215] ? lock_sock_nested+0x72/0xa0 [ 4488.566224] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 4488.566233] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 4488.566244] ? l2cap_sock_new_connection_cb+0x5d/0xa0 [bluetooth] [ 4488.566255] ? l2cap_connect+0x110/0x5a0 [bluetooth] [ 4488.566276] ? l2cap_recv_frame+0x6d0/0x2cb0 [bluetooth] [ 4488.566281] ? __mutex_unlock_slowpath+0x4b/0x2b0 [ 4488.566291] ? l2cap_recv_frame+0x6e8/0x2cb0 [bluetooth] [ 4488.566295] ? __mutex_unlock_slowpath+0x4b/0x2b0 [ 4488.566304] ? hci_rx_work+0x1c6/0x5d0 [bluetooth] [ 4488.566307] ? process_one_work+0x261/0x630 [ 4488.566310] ? worker_thread+0x3a/0x390 [ 4488.566313] ? process_one_work+0x630/0x630 [ 4488.566315] ? kthread+0x120/0x140 [ 4488.566318] ? kthread_create_worker_on_cpu+0x70/0x70 [ 4488.566320] ? ret_from_fork+0x3a/0x50 [ 4488.626592] BUG: sleeping function called from invalid context at net/core/sock.c:2768 [ 4488.626597] in_atomic(): 1, irqs_disabled(): 0, pid: 1804, name: krfcommd [ 4488.626599] INFO: lockdep is turned off. [ 4488.626603] CPU: 6 PID: 1804 Comm: krfcommd Not tainted 4.16.1-300.fc28.x86_64+debug #1 [ 4488.626606] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [ 4488.626609] Call Trace: [ 4488.626615] dump_stack+0x85/0xbf [ 4488.626621] ___might_sleep.cold.72+0xac/0xbc [ 4488.626626] ? lock_sock_nested+0x29/0xa0 [ 4488.626642] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 4488.626648] ? rfcomm_connect_ind+0x21b/0x260 [rfcomm] [ 4488.626652] ? rfcomm_run+0x1620/0x1830 [rfcomm] [ 4488.626657] ? do_wait_intr_irq+0xb0/0xb0 [ 4488.626664] ? rfcomm_check_accept+0x90/0x90 [rfcomm] [ 4488.626667] ? kthread+0x120/0x140 [ 4488.626670] ? kthread_create_worker_on_cpu+0x70/0x70 [ 4488.626676] ? ret_from_fork+0x3a/0x50 When I pairing dualshock 4 game pad: [ 1448.267449] ============================================ [ 1448.267450] WARNING: possible recursive locking detected [ 1448.267452] 4.16.1-300.fc28.x86_64+debug #1 Not tainted [ 1448.267453] -------------------------------------------- [ 1448.267455] kworker/u17:2/668 is trying to acquire lock: [ 1448.267457] (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<000000008dfc4ec7>] bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 1448.267477] but task is already holding lock: [ 1448.267478] (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<00000000b2d78b70>] l2cap_sock_new_connection_cb+0x18/0xa0 [bluetooth] [ 1448.267491] other info that might help us debug this: [ 1448.267493] Possible unsafe locking scenario: [ 1448.267494] CPU0 [ 1448.267495] ---- [ 1448.267496] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [ 1448.267498] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [ 1448.267500] *** DEADLOCK *** [ 1448.267501] May be due to missing lock nesting notation [ 1448.267503] 5 locks held by kworker/u17:2/668: [ 1448.267504] #0: ((wq_completion)"%s"hdev->name#2){+.+.}, at: [<000000003908f3cc>] process_one_work+0x1d7/0x630 [ 1448.267510] #1: ((work_completion)(&hdev->rx_work)){+.+.}, at: [<000000003908f3cc>] process_one_work+0x1d7/0x630 [ 1448.267514] #2: (&conn->chan_lock){+.+.}, at: [<0000000082009ad9>] l2cap_connect+0x8f/0x5a0 [bluetooth] [ 1448.267527] #3: (&chan->lock/2){+.+.}, at: [<0000000006821ecb>] l2cap_connect+0xa9/0x5a0 [bluetooth] [ 1448.267543] #4: (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: [<00000000b2d78b70>] l2cap_sock_new_connection_cb+0x18/0xa0 [bluetooth] [ 1448.267557] stack backtrace: [ 1448.267560] CPU: 6 PID: 668 Comm: kworker/u17:2 Not tainted 4.16.1-300.fc28.x86_64+debug #1 [ 1448.267561] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [ 1448.267571] Workqueue: hci0 hci_rx_work [bluetooth] [ 1448.267573] Call Trace: [ 1448.267579] dump_stack+0x85/0xbf [ 1448.267582] __lock_acquire.cold.62+0x158/0x227 [ 1448.267586] ? mark_held_locks+0x57/0x80 [ 1448.267589] ? lock_acquire+0x9e/0x1b0 [ 1448.267598] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 1448.267602] ? lock_sock_nested+0x72/0xa0 [ 1448.267611] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 1448.267621] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 1448.267634] ? l2cap_sock_new_connection_cb+0x5d/0xa0 [bluetooth] [ 1448.267644] ? l2cap_connect+0x110/0x5a0 [bluetooth] [ 1448.267655] ? l2cap_recv_frame+0x6d0/0x2cb0 [bluetooth] [ 1448.267659] ? __mutex_unlock_slowpath+0x4b/0x2b0 [ 1448.267671] ? l2cap_recv_frame+0x6e8/0x2cb0 [bluetooth] [ 1448.267674] ? __mutex_unlock_slowpath+0x4b/0x2b0 [ 1448.267684] ? hci_rx_work+0x1c6/0x5d0 [bluetooth] [ 1448.267687] ? process_one_work+0x261/0x630 [ 1448.267690] ? worker_thread+0x3a/0x390 [ 1448.267693] ? process_one_work+0x630/0x630 [ 1448.267695] ? kthread+0x120/0x140 [ 1448.267698] ? kthread_create_worker_on_cpu+0x70/0x70 [ 1448.267700] ? ret_from_fork+0x3a/0x50 [ 1448.378725] Bluetooth: HIDP (Human Interface Emulation) ver 1.2 [ 1448.378734] Bluetooth: HIDP socket layer initialized [ 1448.397524] sony 0005:054C:09CC.0009: unknown main item tag 0x0 [ 1448.407894] input: Wireless Controller Touchpad as /devices/pci0000:00/0000:00:14.0/usb1/1-9/1-9.1/1-9.1.7/1-9.1.7:1.0/bluetooth/hci0/hci0:71/0005:054C:09CC.0009/input/input23 [ 1448.408413] input: Wireless Controller Motion Sensors as /devices/pci0000:00/0000:00:14.0/usb1/1-9/1-9.1/1-9.1.7/1-9.1.7:1.0/bluetooth/hci0/hci0:71/0005:054C:09CC.0009/input/input24 [ 1448.409153] input: Wireless Controller as /devices/pci0000:00/0000:00:14.0/usb1/1-9/1-9.1/1-9.1.7/1-9.1.7:1.0/bluetooth/hci0/hci0:71/0005:054C:09CC.0009/input/input22 [ 1448.409597] sony 0005:054C:09CC.0009: input,hidraw6: BLUETOOTH HID v81.00 Gamepad [Wireless Controller] on 00:1a:7d:da:71:0a
Created attachment 1420346 [details] dmesg
Looks like this matches upstream bug: https://bugzilla.kernel.org/show_bug.cgi?id=199669
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 28 kernel bugs. Fedora 28 has now been rebased to 4.17.7-200.fc28. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you experience different issues, please open a new bug report for those.
I still see possible recursive locking detected message when pairing bluetooth devices. [ 6829.212232] ============================================ [ 6829.212234] WARNING: possible recursive locking detected [ 6829.212236] 4.18.0-0.rc7.git1.1.fc29.x86_64 #1 Not tainted [ 6829.212237] -------------------------------------------- [ 6829.212239] kworker/u17:2/28441 is trying to acquire lock: [ 6829.212242] 000000004025b723 (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 6829.212260] but task is already holding lock: [ 6829.212262] 000000004cb71eef (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: l2cap_sock_new_connection_cb+0x18/0xa0 [bluetooth] [ 6829.212278] other info that might help us debug this: [ 6829.212279] Possible unsafe locking scenario: [ 6829.212281] CPU0 [ 6829.212282] ---- [ 6829.212284] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [ 6829.212286] lock(sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP); [ 6829.212288] *** DEADLOCK *** [ 6829.212290] May be due to missing lock nesting notation [ 6829.212293] 5 locks held by kworker/u17:2/28441: [ 6829.212294] #0: 000000009af6a4dc ((wq_completion)"%s"hdev->name#2){+.+.}, at: process_one_work+0x1f3/0x650 [ 6829.212301] #1: 000000006f7488f4 ((work_completion)(&hdev->rx_work)){+.+.}, at: process_one_work+0x1f3/0x650 [ 6829.212306] #2: 000000003dba8333 (&conn->chan_lock){+.+.}, at: l2cap_connect+0x8f/0x5a0 [bluetooth] [ 6829.212321] #3: 00000000aaa813b9 (&chan->lock/2){+.+.}, at: l2cap_connect+0xa9/0x5a0 [bluetooth] [ 6829.212335] #4: 000000004cb71eef (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.}, at: l2cap_sock_new_connection_cb+0x18/0xa0 [bluetooth] [ 6829.212350] stack backtrace: [ 6829.212354] CPU: 6 PID: 28441 Comm: kworker/u17:2 Not tainted 4.18.0-0.rc7.git1.1.fc29.x86_64 #1 [ 6829.212355] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [ 6829.212365] Workqueue: hci0 hci_rx_work [bluetooth] [ 6829.212367] Call Trace: [ 6829.212373] dump_stack+0x85/0xc0 [ 6829.212377] __lock_acquire.cold.64+0x158/0x227 [ 6829.212381] ? mark_held_locks+0x57/0x80 [ 6829.212384] lock_acquire+0x9e/0x1b0 [ 6829.212394] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 6829.212398] lock_sock_nested+0x72/0xa0 [ 6829.212407] ? bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 6829.212417] bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 6829.212429] l2cap_sock_new_connection_cb+0x5d/0xa0 [bluetooth] [ 6829.212441] l2cap_connect+0x110/0x5a0 [bluetooth] [ 6829.212454] ? l2cap_recv_frame+0x6d0/0x2cb0 [bluetooth] [ 6829.212458] ? __mutex_unlock_slowpath+0x4b/0x2b0 [ 6829.212470] l2cap_recv_frame+0x6e8/0x2cb0 [bluetooth] [ 6829.212474] ? __mutex_unlock_slowpath+0x4b/0x2b0 [ 6829.212484] hci_rx_work+0x1c6/0x5d0 [bluetooth] [ 6829.212488] process_one_work+0x27d/0x650 [ 6829.212492] worker_thread+0x3c/0x390 [ 6829.212494] ? process_one_work+0x650/0x650 [ 6829.212498] kthread+0x120/0x140 [ 6829.212501] ? kthread_create_worker_on_cpu+0x70/0x70 [ 6829.212504] ret_from_fork+0x3a/0x50 [ 6829.285343] BUG: sleeping function called from invalid context at net/core/sock.c:2833 [ 6829.285349] in_atomic(): 1, irqs_disabled(): 0, pid: 1743, name: krfcommd [ 6829.285351] INFO: lockdep is turned off. [ 6829.285355] CPU: 6 PID: 1743 Comm: krfcommd Not tainted 4.18.0-0.rc7.git1.1.fc29.x86_64 #1 [ 6829.285358] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [ 6829.285360] Call Trace: [ 6829.285368] dump_stack+0x85/0xc0 [ 6829.285373] ___might_sleep.cold.72+0xac/0xbc [ 6829.285378] lock_sock_nested+0x29/0xa0 [ 6829.285394] bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 6829.285401] rfcomm_connect_ind+0x21b/0x260 [rfcomm] [ 6829.285406] rfcomm_run+0x1611/0x1820 [rfcomm] [ 6829.285411] ? do_wait_intr_irq+0xb0/0xb0 [ 6829.285416] ? rfcomm_check_accept+0x90/0x90 [rfcomm] [ 6829.285419] kthread+0x120/0x140 [ 6829.285422] ? kthread_create_worker_on_cpu+0x70/0x70 [ 6829.285426] ret_from_fork+0x3a/0x50 [ 6829.476282] input: 04:5D:4B:5F:34:57 as /devices/virtual/input/input35 [ 7273.090391] show_signal_msg: 23 callbacks suppressed [ 7273.090393] CFileWriterThre[29422]: segfault at 7f078bfe7240 ip 00007f079137843c sp 00007f078bb8dcf0 error 4 in steamclient.so[7f0790880000+14d2000] [ 7273.090404] Code: 89 df ff d2 8b 45 00 83 f8 02 0f 84 9e 00 00 00 83 f8 03 0f 84 55 05 00 00 83 f8 01 74 48 31 ed 4d 85 e4 74 11 48 85 db 74 0c <48> 8b 03 4c 89 e6 48 89 df ff 50 10 48 8b b4 24 e8 00 00 00 64 48 [ 7755.656023] rfkill: input handler enabled [ 7773.439895] rfkill: input handler disabled [ 8075.232946] BUG: sleeping function called from invalid context at net/core/sock.c:2833 [ 8075.232951] in_atomic(): 1, irqs_disabled(): 0, pid: 1743, name: krfcommd [ 8075.232952] INFO: lockdep is turned off. [ 8075.232956] CPU: 5 PID: 1743 Comm: krfcommd Tainted: G W 4.18.0-0.rc7.git1.1.fc29.x86_64 #1 [ 8075.232957] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [ 8075.232959] Call Trace: [ 8075.232965] dump_stack+0x85/0xc0 [ 8075.232969] ___might_sleep.cold.72+0xac/0xbc [ 8075.232973] lock_sock_nested+0x29/0xa0 [ 8075.232987] bt_accept_enqueue+0x3c/0xb0 [bluetooth] [ 8075.232992] rfcomm_connect_ind+0x21b/0x260 [rfcomm] [ 8075.232997] rfcomm_run+0x1611/0x1820 [rfcomm] [ 8075.233001] ? do_wait_intr_irq+0xb0/0xb0 [ 8075.233005] ? rfcomm_check_accept+0x90/0x90 [rfcomm] [ 8075.233008] kthread+0x120/0x140 [ 8075.233011] ? kthread_create_worker_on_cpu+0x70/0x70 [ 8075.233014] ret_from_fork+0x3a/0x50 [ 8075.413187] input: 04:5D:4B:5F:34:57 as /devices/virtual/input/input36
Created attachment 1473455 [details] dmesg
I'm gonna assume it's fixed since there's no reports with any recent kernels.