BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1e2713067 P4D 1e2713067 PUD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2288 Comm: syz.0.518 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: 00010206
RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881c7a86e40
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881e12a31c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffa500
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e12a31c0
FS:  00007f439f4e36c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001e1b81000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000000000000000 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:vmacache_valid_mm mm/vmacache.c:33 [inline]
RIP: 0010:vmacache_valid mm/vmacache.c:46 [inline]
RIP: 0010:vmacache_find+0x83/0x490 mm/vmacache.c:69
Code: 00 00 48 89 5d d0 4d 8d 66 24 4c 89 e0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 ee 03 00 00 41 8b 1c 24 89 de 81 e6 00 00 20 00 <31> ff e8 16 3e dc ff 81 e3 00 00 20 00 0f 85 c7 00 00 00 49 83 c7
RSP: 0018:ffff8881c3397338 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000400640 RCX: ffff8881c7a86e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881e30897c0
RBP: ffff8881c3397368 R08: dffffc0000000000 R09: ffff8881c33974c0
R10: ffffed1038672e9a R11: 1ffff11038672e98 R12: ffff8881c7a86e64
R13: dffffc0000000000 R14: ffff8881c7a86e40 R15: ffff8881e30897c0
 find_vma mm/mmap.c:2250 [inline]
 find_extend_vma+0x3c/0x2b0 mm/mmap.c:2564
 __get_user_pages+0x2aa/0x15d0 mm/gup.c:829
 get_dump_page+0xd1/0x140 mm/gup.c:1363
 elf_core_dump+0x3438/0x3bd0 fs/binfmt_elf.c:2349
 do_coredump+0x1d8c/0x2ab0 fs/coredump.c:801
 get_signal+0xdb7/0x13d0 kernel/signal.c:2732
 do_signal+0xad/0xda0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0xc4/0x1b0 arch/x86/entry/common.c:159
 prepare_exit_to_usermode+0x18e/0x1f0 arch/x86/entry/common.c:194
 ret_from_intr+0x1c/0x1c
RIP: 0033:0x7f43a0e7a971
Code: 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 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000fffffeb0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f43a10a1fa0 RCX: 00007f43a0e7a969
RDX: 0000000000000000 RSI: 00000000fffffeb0 RDI: 0000000002000400
RBP: 00007f43a0efcab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f43a10a1fa0 R15: 00007ffff3255af8
Modules linked in:
CR2: 0000000000000000
---[ end trace f0e02b296dfa7952 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010206
RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881c7a86e40
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881e12a31c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffa500
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e12a31c0
FS:  00007f439f4e36c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001e1b81000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	48 89 5d d0          	mov    %rbx,-0x30(%rbp)
   6:	4d 8d 66 24          	lea    0x24(%r14),%r12
   a:	4c 89 e0             	mov    %r12,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  16:	84 c0                	test   %al,%al
  18:	0f 85 ee 03 00 00    	jne    0x40c
  1e:	41 8b 1c 24          	mov    (%r12),%ebx
  22:	89 de                	mov    %ebx,%esi
  24:	81 e6 00 00 20 00    	and    $0x200000,%esi
* 2a:	31 ff                	xor    %edi,%edi <-- trapping instruction
  2c:	e8 16 3e dc ff       	call   0xffdc3e47
  31:	81 e3 00 00 20 00    	and    $0x200000,%ebx
  37:	0f 85 c7 00 00 00    	jne    0x104
  3d:	49                   	rex.WB
  3e:	83                   	.byte 0x83
  3f:	c7                   	.byte 0xc7