Oops: general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]
CPU: 1 UID: 0 PID: 12178 Comm: syz.2.10625 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:rt_cache_valid net/ipv4/route.c:1582 [inline]
RIP: 0010:__mkroute_output net/ipv4/route.c:2650 [inline]
RIP: 0010:ip_route_output_key_hash_rcu+0x12ba/0x25d0 net/ipv4/route.c:2875
Code: c3 31 ff 89 c6 e8 06 9a c7 f7 85 db 74 5b e8 bd 95 c7 f7 eb 05 e8 b6 95 c7 f7 4d 85 ff 74 36 49 8d 5f 3a 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 ff 10 00 00 0f b7 1b bf ff ff 00 00 89
RSP: 0018:ffffc90000a07ee0 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000039 RCX: ffff88808f579e40
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000080000000 R08: ffff88808f579e40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000100 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888029588758 R15: ffffffffffffffff
FS:  00007f9dffdf86c0(0000) GS:ffff8881255ae000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9dfefe9d40 CR3: 000000005bc10000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 ip_route_output_key_hash+0x18d/0x2a0 net/ipv4/route.c:2705
 __ip_route_output_key include/net/route.h:169 [inline]
 ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2932
 ip_route_output_key include/net/route.h:179 [inline]
 udp_tunnel_dst_lookup+0x1e0/0x440 net/ipv4/udp_tunnel_core.c:260
 vxlan_xmit_one+0x1809/0x2db0 drivers/net/vxlan/vxlan_core.c:2474
 vxlan_xmit+0x1c2e/0x30c0 drivers/net/vxlan/vxlan_core.c:2827
 __netdev_start_xmit include/linux/netdevice.h:5275 [inline]
 netdev_start_xmit include/linux/netdevice.h:5284 [inline]
 xmit_one net/core/dev.c:3871 [inline]
 dev_hard_start_xmit+0x2cd/0x7f0 net/core/dev.c:3887
 __dev_queue_xmit+0x168f/0x3850 net/core/dev.c:4836
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xbaa/0x14e0 net/ipv6/ndisc.c:512
 addrconf_rs_timer+0x395/0x6d0 net/ipv6/addrconf.c:4042
 call_timer_fn+0x192/0x5a0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers kernel/time/timer.c:2373 [inline]
 __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2385
 run_timer_base kernel/time/timer.c:2394 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404
 handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:finish_task_switch+0x245/0x920 kernel/sched/core.c:5152
Code: 00 00 48 85 db 0f 85 e8 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 49 83 c4 48 4c 89 e7 e8 25 02 0d 0a e8 f0 37 38 00 fb 4c 8b 65 c0 <49> 8d bc 24 20 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000dadf3f8 EFLAGS: 00000202
RAX: 0000000000000ecb RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dee26f2 RDI: ffffffff8c276500
RBP: ffffc9000dadf450 R08: ffffffff90109177 R09: 1ffffffff202122e
R10: dffffc0000000000 R11: fffffbfff202122f R12: ffff88808f579e40
R13: dffffc0000000000 R14: ffff88808f578000 R15: ffff8880b873b718
 context_switch kernel/sched/core.c:5298 [inline]
 __schedule+0x1570/0x5290 kernel/sched/core.c:6907
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7091
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __local_bh_enable_ip+0xe1/0x130 kernel/softirq.c:457
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 xdp_test_run_batch net/bpf/test_run.c:357 [inline]
 bpf_test_run_xdp_live+0x1a47/0x1cf0 net/bpf/test_run.c:379
 bpf_prog_test_run_xdp+0x81c/0x1160 net/bpf/test_run.c:1397
 bpf_prog_test_run+0x2c7/0x340 kernel/bpf/syscall.c:4721
 __sys_bpf+0x643/0x950 kernel/bpf/syscall.c:6246
 __do_sys_bpf kernel/bpf/syscall.c:6341 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6339 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6339
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9dfef9c629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9dffdf8028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9dff215fa0 RCX: 00007f9dfef9c629
RDX: 0000000000000050 RSI: 0000200000000600 RDI: 000000000000000a
RBP: 00007f9dff032b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9dff216038 R14: 00007f9dff215fa0 R15: 00007ffdbe9aa818
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rt_cache_valid net/ipv4/route.c:1582 [inline]
RIP: 0010:__mkroute_output net/ipv4/route.c:2650 [inline]
RIP: 0010:ip_route_output_key_hash_rcu+0x12ba/0x25d0 net/ipv4/route.c:2875
Code: c3 31 ff 89 c6 e8 06 9a c7 f7 85 db 74 5b e8 bd 95 c7 f7 eb 05 e8 b6 95 c7 f7 4d 85 ff 74 36 49 8d 5f 3a 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 ff 10 00 00 0f b7 1b bf ff ff 00 00 89
RSP: 0018:ffffc90000a07ee0 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000039 RCX: ffff88808f579e40
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000080000000 R08: ffff88808f579e40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000100 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888029588758 R15: ffffffffffffffff
FS:  00007f9dffdf86c0(0000) GS:ffff8881255ae000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9dfefe9d40 CR3: 000000005bc10000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	c3                   	ret
   1:	31 ff                	xor    %edi,%edi
   3:	89 c6                	mov    %eax,%esi
   5:	e8 06 9a c7 f7       	call   0xf7c79a10
   a:	85 db                	test   %ebx,%ebx
   c:	74 5b                	je     0x69
   e:	e8 bd 95 c7 f7       	call   0xf7c795d0
  13:	eb 05                	jmp    0x1a
  15:	e8 b6 95 c7 f7       	call   0xf7c795d0
  1a:	4d 85 ff             	test   %r15,%r15
  1d:	74 36                	je     0x55
  1f:	49 8d 5f 3a          	lea    0x3a(%r15),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 ff 10 00 00    	jne    0x1136
  37:	0f b7 1b             	movzwl (%rbx),%ebx
  3a:	bf ff ff 00 00       	mov    $0xffff,%edi
  3f:	89                   	.byte 0x89