blktrace: Concurrent blktraces are not allowed on sg0
Process accounting resumed
Bluetooth: hci0: Opcode 0x080f failed: -4
Bluetooth: hci0: command 0x080f tx timeout
------------[ cut here ]------------
WARNING: kernel/trace/blktrace.c:367 at __blk_add_trace+0x50f/0x9c0, CPU#0: jbd2/sda-8/71
Modules linked in:
CPU: 0 UID: 0 PID: 71 Comm: jbd2/sda-8 Not tainted 6.18.0-rc2-next-20251024 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__blk_add_trace+0x50f/0x9c0
Code: 3e f7 ff 4c 89 e3 bf 00 80 00 00 48 c1 eb 10 48 89 de e8 94 39 f7 ff 48 81 fb 00 80 00 00 0f 86 dd fc ff ff e8 22 3e f7 ff 90 <0f> 0b 90 e9 29 ff ff ff 41 83 ff 03 75 88 e8 0e 3e f7 ff 49 81 cc
RSP: 0018:ffff88800f2ef730 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 000000000000901e RCX: ffffffff817cccec
RDX: ffff88800f2d8000 RSI: ffffffff817cccfe RDI: 0000000000000007
RBP: ffff88800c506d80 R08: 0000000010000000 R09: 0000000000000000
R10: 000000000000901e R11: 0000000000000001 R12: 00000000901e0001
R13: 000000000020d788 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880e53f4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562136bf8618 CR3: 000000001c52e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 blk_add_trace_bio+0x26a/0x4a0
 submit_bio_noacct_nocheck+0x3d1/0xb60
 submit_bio_noacct+0x35b/0x1350
 journal_submit_commit_record.part.0+0x5aa/0x860
 jbd2_journal_commit_transaction+0x33e5/0x5b30
 kjournald2+0x1d8/0x720
 kthread+0x3c8/0x740
 ret_from_fork+0x38b/0x470
 ret_from_fork_asm+0x1a/0x30
 </TASK>
irq event stamp: 358709
hardirqs last  enabled at (358719): [<ffffffff81543798>] __up_console_sem+0x78/0x80
hardirqs last disabled at (358728): [<ffffffff8154377d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (358466): [<ffffffff813bc05c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (358347): [<ffffffff813bc3f4>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
Bluetooth: hci3: Opcode 0x0401 failed: -4
Bluetooth: hci0: Opcode 0x080f failed: -4
Bluetooth: hci3: command 0x0c1a tx timeout
Bluetooth: hci0: command 0x080f tx timeout