BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1eb293067 P4D 1eb293067 PUD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010202
RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881f5dc4ec0
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffff8881cb7231c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffff99b0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881cb7231c0
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d6f5e000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 call_timer_fn+0x3c/0x380 kernel/time/timer.c:1448
 expire_timers kernel/time/timer.c:1493 [inline]
 __run_timers+0x81d/0xb60 kernel/time/timer.c:1817
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830
 __do_softirq+0x236/0x660 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x197/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:539 [inline]
 smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
 </IRQ>
RIP: 0010:default_idle+0x23/0x40 arch/x86/kernel/process.c:578
Code: 90 90 00 00 90 90 00 55 48 89 e5 e8 87 b2 f5 fd bf 01 00 00 00 89 c6 e8 bb 1c fc fc 0f 1f 44 00 00 0f 00 2d cf c2 59 00 fb f4 <e8> 68 b2 f5 fd bf ff ff ff ff 89 c6 e8 9c 1c fc fc 5d c3 66 2e 0f
RSP: 0018:ffff8881f5df7d80 EFLAGS: 000002c6 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f5dc4ec0 RCX: ffff8881f5dc4ec0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8881f5df7d80 R08: dffffc0000000000 R09: ffffed103ebb89d9
R10: ffffed103ebb89d9 R11: 1ffff1103ebb89d8 R12: 0000000000000001
R13: 1ffff1103ebb89d8 R14: 0000000000000000 R15: ffffffff862bb528
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:568
 default_idle_call kernel/sched/idle.c:94 [inline]
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x21d/0x550 kernel/sched/idle.c:264
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:356
 start_secondary+0x366/0x420 arch/x86/kernel/smpboot.c:277
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Modules linked in:
CR2: 0000000000000000
---[ end trace fbe4f87bc627d220 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010202
RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881f5dc4ec0
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffff8881cb7231c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffff99b0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881cb7231c0
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d6f5e000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	00 55 48             	add    %dl,0x48(%rbp)
   9:	89 e5                	mov    %esp,%ebp
   b:	e8 87 b2 f5 fd       	call   0xfdf5b297
  10:	bf 01 00 00 00       	mov    $0x1,%edi
  15:	89 c6                	mov    %eax,%esi
  17:	e8 bb 1c fc fc       	call   0xfcfc1cd7
  1c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  21:	0f 00 2d cf c2 59 00 	verw   0x59c2cf(%rip)        # 0x59c2f7
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	e8 68 b2 f5 fd       	call   0xfdf5b297 <-- trapping instruction
  2f:	bf ff ff ff ff       	mov    $0xffffffff,%edi
  34:	89 c6                	mov    %eax,%esi
  36:	e8 9c 1c fc fc       	call   0xfcfc1cd7
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	66                   	data16
  3e:	2e                   	cs
  3f:	0f                   	.byte 0xf