https://bugzilla.kernel.org/show_bug.cgi?id=202193 Bug ID: 202193 Summary: BUG: sleeping function called from invalid context at net/core/sock.c:2771 when trying to connect bluetooth headphones Product: Drivers Version: 2.5 Kernel Version: 4.21.0-0.rc0.git1.1.fc30.x86_64 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: emilio@xxxxxxxxx Regression: No Relevant lines from the dmesg log are: [ 5575.204953] Bluetooth: hci0: Bootloader revision 0.0 build 2 week 52 2014 [ 5575.211918] Bluetooth: hci0: Device revision is 5 [ 5575.211923] Bluetooth: hci0: Secure boot is enabled [ 5575.211925] Bluetooth: hci0: OTP lock is enabled [ 5575.211927] Bluetooth: hci0: API lock is enabled [ 5575.211929] Bluetooth: hci0: Debug lock is disabled [ 5575.211932] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 [ 5575.226315] Bluetooth: hci0: Found device firmware: intel/ibt-11-5.sfi [ 5576.905092] Bluetooth: hci0: Waiting for firmware download to complete [ 5576.906318] Bluetooth: hci0: Firmware loaded in 1666582 usecs [ 5576.906972] Bluetooth: hci0: Waiting for device to boot [ 5576.918832] Bluetooth: hci0: Device booted in 11958 usecs [ 5576.919318] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-11-5.ddc [ 5576.922852] Bluetooth: hci0: Applying Intel DDC parameters completed [ 5577.016834] Bluetooth: RFCOMM TTY layer initialized [ 5577.016862] Bluetooth: RFCOMM socket layer initialized [ 5577.017011] Bluetooth: RFCOMM ver 1.11 [ 5577.309829] Bluetooth: hci0: last event is not cmd complete (0x0f) [ 5593.413800] Bluetooth: hci0: last event is not cmd complete (0x0f) [ 5609.419818] Bluetooth: hci0: last event is not cmd complete (0x0f) [ 5622.955313] BUG: sleeping function called from invalid context at net/core/sock.c:2771 [ 5622.955402] in_atomic(): 1, irqs_disabled(): 0, pid: 30395, name: krfcommd [ 5622.955406] 2 locks held by krfcommd/30395: [ 5622.955408] #0: 0000000025ab6521 (rfcomm_mutex){+.+.}, at: rfcomm_run+0x159/0x1820 [rfcomm] [ 5622.955447] #1: 00000000354a3c8c (slock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}, at: rfcomm_connect_ind+0x122/0x260 [rfcomm] [ 5622.955460] CPU: 5 PID: 30395 Comm: krfcommd Tainted: G OE 4.21.0-0.rc0.git1.1.fc30.x86_64 #1 [ 5622.955463] Hardware name: LENOVO 20ENCTO1WW/20ENCTO1WW, BIOS N1EET80W (1.53 ) 09/14/2018 [ 5622.955467] Call Trace: [ 5622.955495] dump_stack+0x85/0xc0 [ 5622.955506] ___might_sleep.cold.73+0xac/0xbc [ 5622.955527] lock_sock_nested+0x29/0xa0 [ 5622.955658] bt_accept_enqueue+0x3f/0xb0 [bluetooth] [ 5622.955683] rfcomm_connect_ind+0x21b/0x260 [rfcomm] [ 5622.955691] rfcomm_run+0x1611/0x1820 [rfcomm] [ 5622.955706] ? do_wait_intr_irq+0xb0/0xb0 [ 5622.955715] ? rfcomm_check_accept+0x90/0x90 [rfcomm] [ 5622.955732] kthread+0x120/0x140 [ 5622.955736] ? kthread_create_on_node+0x60/0x60 [ 5622.955751] ret_from_fork+0x3a/0x50 [ 5622.955807] ============================================ [ 5622.955808] WARNING: possible recursive locking detected [ 5622.955810] 4.21.0-0.rc0.git1.1.fc30.x86_64 #1 Tainted: G W OE [ 5622.955811] -------------------------------------------- [ 5622.955813] krfcommd/30395 is trying to acquire lock: [ 5622.955818] 000000009ba868fd (slock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}, at: lock_sock_nested+0x36/0xa0 [ 5622.955857] but task is already holding lock: [ 5622.955858] 00000000354a3c8c (slock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}, at: rfcomm_connect_ind+0x122/0x260 [rfcomm] [ 5622.955866] other info that might help us debug this: [ 5622.955868] Possible unsafe locking scenario: [ 5622.955870] CPU0 [ 5622.955871] ---- [ 5622.955872] lock(slock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 5622.955873] lock(slock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 5622.955875] *** DEADLOCK *** [ 5622.955877] May be due to missing lock nesting notation [ 5622.955879] 2 locks held by krfcommd/30395: [ 5622.955880] #0: 0000000025ab6521 (rfcomm_mutex){+.+.}, at: rfcomm_run+0x159/0x1820 [rfcomm] [ 5622.955885] #1: 00000000354a3c8c (slock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}, at: rfcomm_connect_ind+0x122/0x260 [rfcomm] [ 5622.955889] stack backtrace: [ 5622.955892] CPU: 5 PID: 30395 Comm: krfcommd Tainted: G W OE 4.21.0-0.rc0.git1.1.fc30.x86_64 #1 [ 5622.955893] Hardware name: LENOVO 20ENCTO1WW/20ENCTO1WW, BIOS N1EET80W (1.53 ) 09/14/2018 [ 5622.955895] Call Trace: [ 5622.955908] dump_stack+0x85/0xc0 [ 5622.955917] __lock_acquire.cold.62+0xc5/0x227 [ 5622.955930] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 5622.955944] ? retint_kernel+0x10/0x10 [ 5622.955947] lock_acquire+0x9e/0x180 [ 5622.955951] ? lock_sock_nested+0x36/0xa0 [ 5622.955954] ? dump_stack+0xb4/0xc0 [ 5622.955957] _raw_spin_lock_bh+0x38/0x80 [ 5622.955961] ? lock_sock_nested+0x36/0xa0 [ 5622.955963] lock_sock_nested+0x36/0xa0 [ 5622.956048] bt_accept_enqueue+0x3f/0xb0 [bluetooth] [ 5622.956095] rfcomm_connect_ind+0x21b/0x260 [rfcomm] [ 5622.956101] rfcomm_run+0x1611/0x1820 [rfcomm] [ 5622.956107] ? do_wait_intr_irq+0xb0/0xb0 [ 5622.956114] ? rfcomm_check_accept+0x90/0x90 [rfcomm] [ 5622.956126] kthread+0x120/0x140 [ 5622.956130] ? kthread_create_on_node+0x60/0x60 [ 5622.956135] ret_from_fork+0x3a/0x50 [ 5623.197411] input: 2C:41:A1:C6:01:C0 as /devices/virtual/input/input19 [ 5625.309788] Bluetooth: hci0: last event is not cmd complete (0x0f) [ 5643.410973] Bluetooth: hci0: last event is not cmd complete (0x0f) [ 5659.311917] Bluetooth: hci0: last event is not cmd complete (0x0f) Let me know if/how I can help diagnose further. -- You are receiving this mail because: You are the assignee for the bug.
