BUG: unable to handle page fault for address: ffffc9000d171010
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 13fe9a067 P4D 13fe9a067 PUD 1aad8067 PMD 300f3067 PTE 0
Oops: Oops: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5802 Comm: kworker/u9:2 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Workqueue: hci1 hci_rx_work
RIP: 0010:kcov_remote_area_get kernel/kcov.c:142 [inline]
RIP: 0010:kcov_remote_start+0x2a1/0x710 kernel/kcov.c:906
Code: 5d 8d 4c 8b b8 98 03 26 92 bd 00 00 04 00 eb 4f 41 8b ae a4 00 00 00 49 c7 c7 40 3a c2 8d 4d 8b 3f 49 81 ff 40 3a c2 8d 74 4c <41> 39 6f 10 75 ee 4c 89 ff e8 11 22 d7 02 84 c0 74 0e 49 8b 07 49
RSP: 0018:ffffc90004fbf9b0 EFLAGS: 00010287
RAX: 0000000000000000 RBX: ffff88803049dac0 RCX: 0000000000000000
RDX: 00000000feffa300 RSI: 0000000000000001 RDI: ffffffff8b85e7a0
RBP: 0000000000100000 R08: ffffffff8b0fabf0 R09: ffffffff8dbc77c0
R10: dffffc0000000000 R11: fffffbfff1e8fbcf R12: 0000000000000002
R13: 0000000000000001 R14: ffff888038392e00 R15: ffffc9000d171000
FS:  0000000000000000(0000) GS:ffff8881265c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000d171010 CR3: 00000000358de000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kcov_remote_start_common include/linux/kcov.h:50 [inline]
 hci_rx_work+0x10f/0x1030 net/bluetooth/hci_core.c:4039
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0xda6/0x1360 kernel/workqueue.c:3421
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
CR2: ffffc9000d171010
---[ end trace 0000000000000000 ]---
RIP: 0010:kcov_remote_area_get kernel/kcov.c:142 [inline]
RIP: 0010:kcov_remote_start+0x2a1/0x710 kernel/kcov.c:906
Code: 5d 8d 4c 8b b8 98 03 26 92 bd 00 00 04 00 eb 4f 41 8b ae a4 00 00 00 49 c7 c7 40 3a c2 8d 4d 8b 3f 49 81 ff 40 3a c2 8d 74 4c <41> 39 6f 10 75 ee 4c 89 ff e8 11 22 d7 02 84 c0 74 0e 49 8b 07 49
RSP: 0018:ffffc90004fbf9b0 EFLAGS: 00010287
RAX: 0000000000000000 RBX: ffff88803049dac0 RCX: 0000000000000000
RDX: 00000000feffa300 RSI: 0000000000000001 RDI: ffffffff8b85e7a0
RBP: 0000000000100000 R08: ffffffff8b0fabf0 R09: ffffffff8dbc77c0
R10: dffffc0000000000 R11: fffffbfff1e8fbcf R12: 0000000000000002
R13: 0000000000000001 R14: ffff888038392e00 R15: ffffc9000d171000
FS:  0000000000000000(0000) GS:ffff8881265c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000d171010 CR3: 00000000358de000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	5d                   	pop    %rbp
   1:	8d 4c 8b b8          	lea    -0x48(%rbx,%rcx,4),%ecx
   5:	98                   	cwtl
   6:	03 26                	add    (%rsi),%esp
   8:	92                   	xchg   %eax,%edx
   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 40 3a c2 8d 	mov    $0xffffffff8dc23a40,%r15
  1e:	4d 8b 3f             	mov    (%r15),%r15
  21:	49 81 ff 40 3a c2 8d 	cmp    $0xffffffff8dc23a40,%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 11 22 d7 02       	call   0x2d72249
  38:	84 c0                	test   %al,%al
  3a:	74 0e                	je     0x4a
  3c:	49 8b 07             	mov    (%r15),%rax
  3f:	49                   	rex.WB