------------[ cut here ]------------
WARNING: CPU: 1 PID: 9544 at net/core/flow_dissector.c:1027 __skb_flow_dissect+0xade/0x6d50 net/core/flow_dissector.c:1022
Modules linked in:
CPU: 1 PID: 9544 Comm: syz.7.1457 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__skb_flow_dissect+0xade/0x6d50 net/core/flow_dissector.c:1027
Code: c6 e8 76 9b 4e f9 85 db 0f 84 5b 06 00 00 80 3d c2 fe d8 05 01 0f 85 81 06 00 00 e8 fc 97 4e f9 e9 e7 f9 ff ff e8 f2 97 4e f9 <0f> 0b e8 3b 64 fd 01 89 c3 31 ff 89 c6 e8 40 9b 4e f9 85 db 74 18
RSP: 0018:ffffc900001df7c0 EFLAGS: 00010246
RAX: ffffffff8833999e RBX: 0000000000000000 RCX: ffff888025433c00
RDX: 0000000000000100 RSI: ffffffff8adf6100 RDI: ffffffff8adf60c0
RBP: ffffc900001dfd88 R08: dffffc0000000000 R09: 1ffffffff2162448
R10: dffffc0000000000 R11: fffffbfff2162449 R12: ffffffff8e21823c
R13: 1ffffffff1c43048 R14: ffffffff8e218242 R15: dffffc0000000000
FS:  00007f114106b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000032000 CR3: 000000003b529000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 skb_flow_dissect_flow_keys include/linux/skbuff.h:1531 [inline]
 ___skb_get_hash+0x55/0x6e0 net/core/flow_dissector.c:1713
 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1778
 skb_get_hash include/linux/skbuff.h:1573 [inline]
 nft_trace_init+0x1e0/0x430 net/netfilter/nf_tables_trace.c:292
 nft_do_chain+0x1612/0x16d0 net/netfilter/nf_tables_core.c:243
 nft_do_chain_inet+0x25c/0x340 net/netfilter/nft_chain_filter.c:161
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xb9/0x200 net/netfilter/core.c:614
 nf_hook+0x224/0x390 include/linux/netfilter.h:257
 __ip_local_out+0x49c/0x5d0 net/ipv4/ip_output.c:115
 ip_local_out+0x26/0x120 net/ipv4/ip_output.c:124
 iptunnel_xmit+0x4a1/0x880 net/ipv4/ip_tunnel_core.c:82
 udp_tunnel_xmit_skb+0x22b/0x380 net/ipv4/udp_tunnel_core.c:172
 tipc_udp_xmit+0x85d/0xb40 net/tipc/udp_media.c:198
 tipc_udp_send_msg+0x27a/0x3e0 net/tipc/udp_media.c:271
 tipc_bearer_xmit_skb+0x2a9/0x3f0 net/tipc/bearer.c:578
 tipc_disc_timeout+0x5e1/0x740 net/tipc/discover.c:340
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x267/0x8e0 kernel/sched/core.c:5125
Code: d7 08 85 c0 0f 84 38 01 00 00 48 85 db 0f 85 57 01 00 00 e9 e7 04 00 00 4c 89 e7 e8 f3 90 e1 08 e8 5e 17 2f 00 fb 4c 8b 65 b8 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc900068b7660 EFLAGS: 00000286
RAX: 3a9a9f1e95637600 RBX: 0000000000000000 RCX: 3a9a9f1e95637600
RDX: dffffc0000000000 RSI: ffffffff8a8c1820 RDI: ffffffff8adf6120
RBP: ffffc900068b76b0 R08: ffff8880b8e3ad03 R09: 1ffff110171c75a0
R10: dffffc0000000000 R11: ffffed10171c75a1 R12: ffff888025433c00
R13: ffff8880b8f3ba48 R14: dffffc0000000000 R15: ffff8880b8f3b7d0
 context_switch kernel/sched/core.c:5249 [inline]
 __schedule+0x1087/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_timeout+0xbd/0x2d0 kernel/time/timer.c:2144
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x2c2/0x590 kernel/sched/completion.c:138
 rdmsr_safe_on_cpu+0x176/0x290 arch/x86/lib/msr-smp.c:183
 msr_read+0x108/0x1b0 arch/x86/kernel/msr.c:67
 vfs_read+0x2db/0x960 fs/read_write.c:468
 ksys_read+0x14d/0x260 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f114019e0d9
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:00007f114106b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f1140425fa0 RCX: 00007f114019e0d9
RDX: 0000000000018ff8 RSI: 0000200000019680 RDI: 0000000000000003
RBP: 00007f1140235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1140426038 R14: 00007f1140425fa0 R15: 00007ffd4035c7c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	d7                   	xlat   %ds:(%rbx)
   1:	08 85 c0 0f 84 38    	or     %al,0x38840fc0(%rbp)
   7:	01 00                	add    %eax,(%rax)
   9:	00 48 85             	add    %cl,-0x7b(%rax)
   c:	db 0f                	fisttpl (%rdi)
   e:	85 57 01             	test   %edx,0x1(%rdi)
  11:	00 00                	add    %al,(%rax)
  13:	e9 e7 04 00 00       	jmp    0x4ff
  18:	4c 89 e7             	mov    %r12,%rdi
  1b:	e8 f3 90 e1 08       	call   0x8e19113
  20:	e8 5e 17 2f 00       	call   0x2f1783
  25:	fb                   	sti
  26:	4c 8b 65 b8          	mov    -0x48(%rbp),%r12
* 2a:	49 8d bc 24 f8 15 00 	lea    0x15f8(%r12),%rdi <-- trapping instruction
  31:	00
  32:	48 89 f8             	mov    %rdi,%rax
  35:	48 c1 e8 03          	shr    $0x3,%rax
  39:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
  3e:	84 c0                	test   %al,%al