BUG: unable to handle page fault for address: ffffed105d45bfff
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23fff3067 P4D 23fff3067 PUD 23fff1067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 408 Comm: udevd Not tainted 5.4.265-syzkaller-04832-g4d7b888b5774 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:ipgre_header+0x110/0x470 net/ipv4/ip_gre.c:838
Code: 41 81 e7 00 40 00 00 44 0f 44 e5 31 ff 44 89 fe e8 c5 69 a0 fd 49 8d 6e 01 4c 89 f0 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 cf 01 00 00 48 89 e8 48 c1 e8 03 0f b6 04
RSP: 0018:ffff8881f6e096f0 EFLAGS: 00010a07
RAX: 1ffff1105d45bfff RBX: ffff8882ea2dffe8 RCX: 0000000080000301
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8882ea2dfffd R08: ffffffff83c3dfeb R09: 0000000000010038
R10: ffff8881f31c4ec0 R11: 0000000000000002 R12: 0000000000000000
R13: ffff8881f23d4000 R14: ffff8882ea2dfffc R15: 0000000000000000
FS:  00007fdb2d7a6c80(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed105d45bfff CR3: 00000001dc961000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dev_hard_header include/linux/netdevice.h:2998 [inline]
 neigh_connected_output+0x275/0x430 net/core/neighbour.c:1524
 neigh_output include/net/neighbour.h:518 [inline]
 ip6_finish_output2+0xf9e/0x18e0 net/ipv6/ip6_output.c:144
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1b3/0x430 net/ipv6/ip6_output.c:248
 dst_output include/net/dst.h:438 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0x702/0xc30 net/ipv6/ndisc.c:509
 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3938
 call_timer_fn+0x36/0x390 kernel/time/timer.c:1418
 expire_timers kernel/time/timer.c:1463 [inline]
 __run_timers+0x879/0xbe0 kernel/time/timer.c:1787
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1800
 __do_softirq+0x23b/0x6b7 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+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
 </IRQ>
Modules linked in:
CR2: ffffed105d45bfff
---[ end trace 86fbda4df1b7710c ]---
RIP: 0010:ipgre_header+0x110/0x470 net/ipv4/ip_gre.c:838
Code: 41 81 e7 00 40 00 00 44 0f 44 e5 31 ff 44 89 fe e8 c5 69 a0 fd 49 8d 6e 01 4c 89 f0 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 cf 01 00 00 48 89 e8 48 c1 e8 03 0f b6 04
RSP: 0018:ffff8881f6e096f0 EFLAGS: 00010a07
RAX: 1ffff1105d45bfff RBX: ffff8882ea2dffe8 RCX: 0000000080000301
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8882ea2dfffd R08: ffffffff83c3dfeb R09: 0000000000010038
R10: ffff8881f31c4ec0 R11: 0000000000000002 R12: 0000000000000000
R13: ffff8881f23d4000 R14: ffff8882ea2dfffc R15: 0000000000000000
FS:  00007fdb2d7a6c80(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed105d45bfff CR3: 00000001dc961000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	41 81 e7 00 40 00 00 	and    $0x4000,%r15d
   7:	44 0f 44 e5          	cmove  %ebp,%r12d
   b:	31 ff                	xor    %edi,%edi
   d:	44 89 fe             	mov    %r15d,%esi
  10:	e8 c5 69 a0 fd       	call   0xfda069da
  15:	49 8d 6e 01          	lea    0x1(%r14),%rbp
  19:	4c 89 f0             	mov    %r14,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  27:	fc ff df
* 2a:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 cf 01 00 00    	jne    0x205
  36:	48 89 e8             	mov    %rbp,%rax
  39:	48 c1 e8 03          	shr    $0x3,%rax
  3d:	0f                   	.byte 0xf
  3e:	b6 04                	mov    $0x4,%dh