BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1def70067 P4D 1def70067 PUD 1e0e6e067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.180-syzkaller-00002-gb730087e9a5d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09d30 EFLAGS: 00010202
RAX: ffffffff81519189 RBX: 0000000000000101 RCX: ffffffff858189c0
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffff8881e0dff1c0
RBP: ffff8881e0dff1e0 R08: ffffffff81518f62 R09: ffffed103edc92f7
R10: ffffed103edc92f7 R11: 1ffff1103edc92f6 R12: 00000000ffffbc78
R13: 1ffff1103edc92f1 R14: 0000000000000000 R15: ffff8881e0dff1c0
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001def72000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x31/0x350 kernel/time/timer.c:1418
 expire_timers+0x21e/0x400 kernel/time/timer.c:1463
 __run_timers+0x5b0/0x6b0 kernel/time/timer.c:1787
 run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
 __do_softirq+0x23e/0x643 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x195/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:538 [inline]
 smp_apic_timer_interrupt+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
 </IRQ>
RIP: 0010:default_idle+0x1f/0x30 arch/x86/kernel/process.c:573
Code: 90 90 90 90 90 90 90 90 90 90 90 e8 4b 72 ff fd bf 01 00 00 00 89 c6 e8 1f 34 0a fd e9 07 00 00 00 0f 00 2d 43 7b 48 00 fb f4 <e8> 2c 72 ff fd bf ff ff ff ff 89 c6 e9 00 34 0a fd 41 57 41 56 53
RSP: 0018:ffffffff85807e88 EFLAGS: 00000296 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffffffff858189c0 RCX: ffffffff858189c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff821c4434 R09: fffffbfff0b03139
R10: fffffbfff0b03139 R11: 1ffffffff0b03138 R12: 0000000000000000
R13: 1ffffffff0b03138 R14: ffffffff85e6b760 R15: 0000000000000000
 default_idle_call kernel/sched/idle.c:94 [inline]
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x1d2/0x590 kernel/sched/idle.c:264
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:356
 start_kernel+0x6d4/0x77f init/main.c:1049
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Modules linked in:
CR2: 0000000000000000
---[ end trace 432ca48e317dbd03 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09d30 EFLAGS: 00010202
RAX: ffffffff81519189 RBX: 0000000000000101 RCX: ffffffff858189c0
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffff8881e0dff1c0
RBP: ffff8881e0dff1e0 R08: ffffffff81518f62 R09: ffffed103edc92f7
R10: ffffed103edc92f7 R11: 1ffff1103edc92f6 R12: 00000000ffffbc78
R13: 1ffff1103edc92f1 R14: 0000000000000000 R15: ffff8881e0dff1c0
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001def72000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	e8 4b 72 ff fd       	callq  0xfdff725b
  10:	bf 01 00 00 00       	mov    $0x1,%edi
  15:	89 c6                	mov    %eax,%esi
  17:	e8 1f 34 0a fd       	callq  0xfd0a343b
  1c:	e9 07 00 00 00       	jmpq   0x28
  21:	0f 00 2d 43 7b 48 00 	verw   0x487b43(%rip)        # 0x487b6b
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	e8 2c 72 ff fd       	callq  0xfdff725b <-- trapping instruction
  2f:	bf ff ff ff ff       	mov    $0xffffffff,%edi
  34:	89 c6                	mov    %eax,%esi
  36:	e9 00 34 0a fd       	jmpq   0xfd0a343b
  3b:	41 57                	push   %r15
  3d:	41 56                	push   %r14
  3f:	53                   	push   %rbx