BUG: kernel NULL pointer dereference, address: 0000000000000148
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 800000010db00067 P4D 800000010db00067 PUD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 0 UID: 0 PID: 3363 Comm: syz.2.16 Not tainted 6.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__lock_acquire+0x2e/0x4e0 kernel/locking/lockdep.c:5091
Code: 56 41 55 41 54 53 48 83 ec 18 65 4c 8b 34 25 80 02 03 00 83 3d a2 48 aa 02 00 0f 84 20 02 00 00 49 89 ff 48 c7 c0 38 6b a6 84 <48> 39 07 0f 84 0d 02 00 00 4d 89 cd 89 cd 89 d1 83 fe 01 77 0c 89
RSP: 0018:ffffc90003527c50 EFLAGS: 00010002
RAX: ffffffff84a66b38 RBX: 0000000000000046 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000148
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff82594640 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88810231d280 R15: 0000000000000148
FS:  0000555568f2d500(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000148 CR3: 00000001023fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0xd9/0x1f0 kernel/locking/lockdep.c:5851
 __timer_delete_sync+0x54/0xe0 kernel/time/timer.c:1644
 bcsp_close+0x1d/0xb0 drivers/bluetooth/hci_bcsp.c:740
 hci_uart_tty_close+0xb6/0x120 drivers/bluetooth/hci_ldisc.c:557
 tty_ldisc_close drivers/tty/tty_ldisc.c:455 [inline]
 tty_ldisc_kill+0x66/0xc0 drivers/tty/tty_ldisc.c:613
 tty_ldisc_release+0xc9/0x120 drivers/tty/tty_ldisc.c:781
 tty_release_struct+0x10/0x80 drivers/tty/tty_io.c:1690
 tty_release+0x4ef/0x640 drivers/tty/tty_io.c:1861
 __fput+0x102/0x280 fs/file_table.c:448
 task_work_run+0x82/0xb0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xa3/0x1b0 kernel/entry/common.c:218
 do_syscall_64+0x9a/0x190 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe06ff8cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeb8720fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fe0701a7ba0 RCX: 00007fe06ff8cde9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fe0701a7ba0 R08: 0000000000000000 R09: 00000003b87212df
R10: 000000000003fdc4 R11: 0000000000000246 R12: 000000000000f1f4
R13: 00007ffeb87210e0 R14: ffffffffffffffff R15: 00007ffeb8721100
 </TASK>
Modules linked in:
CR2: 0000000000000148
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0x2e/0x4e0 kernel/locking/lockdep.c:5091
Code: 56 41 55 41 54 53 48 83 ec 18 65 4c 8b 34 25 80 02 03 00 83 3d a2 48 aa 02 00 0f 84 20 02 00 00 49 89 ff 48 c7 c0 38 6b a6 84 <48> 39 07 0f 84 0d 02 00 00 4d 89 cd 89 cd 89 d1 83 fe 01 77 0c 89
RSP: 0018:ffffc90003527c50 EFLAGS: 00010002
RAX: ffffffff84a66b38 RBX: 0000000000000046 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000148
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff82594640 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88810231d280 R15: 0000000000000148
FS:  0000555568f2d500(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000148 CR3: 00000001023fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	56                   	push   %rsi
   1:	41 55                	push   %r13
   3:	41 54                	push   %r12
   5:	53                   	push   %rbx
   6:	48 83 ec 18          	sub    $0x18,%rsp
   a:	65 4c 8b 34 25 80 02 	mov    %gs:0x30280,%r14
  11:	03 00
  13:	83 3d a2 48 aa 02 00 	cmpl   $0x0,0x2aa48a2(%rip)        # 0x2aa48bc
  1a:	0f 84 20 02 00 00    	je     0x240
  20:	49 89 ff             	mov    %rdi,%r15
  23:	48 c7 c0 38 6b a6 84 	mov    $0xffffffff84a66b38,%rax
* 2a:	48 39 07             	cmp    %rax,(%rdi) <-- trapping instruction
  2d:	0f 84 0d 02 00 00    	je     0x240
  33:	4d 89 cd             	mov    %r9,%r13
  36:	89 cd                	mov    %ecx,%ebp
  38:	89 d1                	mov    %edx,%ecx
  3a:	83 fe 01             	cmp    $0x1,%esi
  3d:	77 0c                	ja     0x4b
  3f:	89                   	.byte 0x89