BUG: unable to handle page fault for address: ffffc9000f0ae010
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 13ffda067 P4D 13ffda067 PUD 19a8b067 PMD 324fb067 PTE 0
Oops: Oops: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12477 Comm: kworker/u9:2 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: hci1 hci_rx_work
RIP: 0010:kcov_remote_area_get kernel/kcov.c:142 [inline]
RIP: 0010:kcov_remote_start+0x2a2/0x6f0 kernel/kcov.c:906
Code: da 8c 4c 8b b8 b0 9b 7f 91 bd 00 00 04 00 eb 4f 41 8b ae a4 00 00 00 49 c7 c7 80 cc 3f 8d 4d 8b 3f 49 81 ff 80 cc 3f 8d 74 4c <41> 39 6f 10 75 ee 4c 89 ff e8 60 f4 c2 02 84 c0 74 0e 49 8b 07 49
RSP: 0018:ffffc9001115f9a8 EFLAGS: 00010283
RAX: 0000000000000000 RBX: ffff888032a0da00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8b1dc080
RBP: 0000000000100000 R08: 0000000000000000 R09: ffffffff8ab4d7a1
R10: dffffc0000000000 R11: fffffbfff1d6b527 R12: 0000000000000002
R13: 0000000000000001 R14: ffff88803174aa00 R15: ffffc9000f0ae000
FS:  0000000000000000(0000) GS:ffff88812702f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000f0ae010 CR3: 000000005063c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kcov_remote_start_common include/linux/kcov.h:50 [inline]
 hci_rx_work+0x130/0xe80 net/bluetooth/hci_core.c:4062
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
CR2: ffffc9000f0ae010
---[ end trace 0000000000000000 ]---
RIP: 0010:kcov_remote_area_get kernel/kcov.c:142 [inline]
RIP: 0010:kcov_remote_start+0x2a2/0x6f0 kernel/kcov.c:906
Code: da 8c 4c 8b b8 b0 9b 7f 91 bd 00 00 04 00 eb 4f 41 8b ae a4 00 00 00 49 c7 c7 80 cc 3f 8d 4d 8b 3f 49 81 ff 80 cc 3f 8d 74 4c <41> 39 6f 10 75 ee 4c 89 ff e8 60 f4 c2 02 84 c0 74 0e 49 8b 07 49
RSP: 0018:ffffc9001115f9a8 EFLAGS: 00010283
RAX: 0000000000000000 RBX: ffff888032a0da00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8b1dc080
RBP: 0000000000100000 R08: 0000000000000000 R09: ffffffff8ab4d7a1
R10: dffffc0000000000 R11: fffffbfff1d6b527 R12: 0000000000000002
R13: 0000000000000001 R14: ffff88803174aa00 R15: ffffc9000f0ae000
FS:  0000000000000000(0000) GS:ffff88812702f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000f0ae010 CR3: 000000005063c000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	da 8c 4c 8b b8 b0 9b 	fimull -0x644f4775(%rsp,%rcx,2)
   7:	7f 91                	jg     0xffffff9a
   9:	bd 00 00 04 00       	mov    $0x40000,%ebp
   e:	eb 4f                	jmp    0x5f
  10:	41 8b ae a4 00 00 00 	mov    0xa4(%r14),%ebp
  17:	49 c7 c7 80 cc 3f 8d 	mov    $0xffffffff8d3fcc80,%r15
  1e:	4d 8b 3f             	mov    (%r15),%r15
  21:	49 81 ff 80 cc 3f 8d 	cmp    $0xffffffff8d3fcc80,%r15
  28:	74 4c                	je     0x76
* 2a:	41 39 6f 10          	cmp    %ebp,0x10(%r15) <-- trapping instruction
  2e:	75 ee                	jne    0x1e
  30:	4c 89 ff             	mov    %r15,%rdi
  33:	e8 60 f4 c2 02       	call   0x2c2f498
  38:	84 c0                	test   %al,%al
  3a:	74 0e                	je     0x4a
  3c:	49 8b 07             	mov    (%r15),%rax
  3f:	49                   	rex.WB