------------[ cut here ]------------
WARNING: CPU: 1 PID: 4623 at net/core/flow_dissector.c:1096 __skb_flow_dissect+0xc73/0x7d00 net/core/flow_dissector.c:1096
Modules linked in:
CPU: 1 PID: 4623 Comm: syz-executor.3 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:__skb_flow_dissect+0xc73/0x7d00 net/core/flow_dissector.c:1096
Code: 65 00 00 80 3d 67 9d 2d 06 01 0f 85 8a 65 00 00 e8 02 53 51 f8 e9 99 fa ff ff e8 f8 52 51 f8 e9 eb f9 ff ff e8 ee 52 51 f8 90 <0f> 0b 90 e9 de 03 00 00 e8 e0 52 51 f8 c6 05 32 9d 2d 06 01 48 c7
RSP: 0000:ffffc90000a07980 EFLAGS: 00010246
RAX: ffffffff89439d82 RBX: 0000000000000000 RCX: ffff888015b3bc00
RDX: 0000000000000301 RSI: 0000000000000000 RDI: ffff88807d7477f0
RBP: ffffc90000a07fa8 R08: ffffffff8943936d R09: 0000000000000000
R10: ffffc90000a08080 R11: fffff5200014101a R12: dffffc0000000000
R13: 0000000000000000 R14: ffffffff8f871d12 R15: ffffffff8f871d08
FS: 000055557e2c9480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000220 CR3: 000000001daf6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
skb_flow_dissect_flow_keys include/linux/skbuff.h:1546 [inline]
___skb_get_hash+0x55/0x800 net/core/flow_dissector.c:1791
__skb_get_hash+0xbc/0x410 net/core/flow_dissector.c:1856
skb_get_hash include/linux/skbuff.h:1588 [inline]
nft_trace_init+0x1e5/0x440 net/netfilter/nf_tables_trace.c:320
nft_do_chain+0x1c42/0x1da0 net/netfilter/nf_tables_core.c:268
nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
__ip6_local_out+0x6fa/0x800 net/ipv6/output_core.c:143
ip6_local_out+0x26/0x70 net/ipv6/output_core.c:153
ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
udp_tunnel6_xmit_skb+0x590/0x9d0 net/ipv6/ip6_udp_tunnel.c:111
tipc_udp_xmit+0x6a3/0xa10 net/tipc/udp_media.c:217
tipc_udp_send_msg+0x26b/0x3d0 net/tipc/udp_media.c:268
tipc_bearer_xmit_skb+0x2f5/0x460 net/tipc/bearer.c:571
tipc_disc_timeout+0x5ee/0x760 net/tipc/discover.c:338
call_timer_fn+0x17e/0x600 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2408 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2419
run_timer_base kernel/time/timer.c:2428 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2438
__do_softirq+0x2bc/0x943 kernel/softirq.c:554
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 fa 16 f7 f5 48 89 df e8 b2 56 f8 f5 e8 2d 77 21 f6 fb bf 01 00 00 00 42 43 ea f5 65 8b 05 93 25 89 74 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0000:ffffc9000d7e7c50 EFLAGS: 00000282
RAX: 3483501b5e27f500 RBX: ffff88802a0fdc80 RCX: ffffffff944bf403
RDX: dffffc0000000000 RSI: ffffffff8baac220 RDI: 0000000000000001
RBP: ffffc9000d7e7d90 R08: ffffffff8f86ae6f R09: 1ffffffff1f0d5cd
R10: dffffc0000000000 R11: fffffbfff1f0d5ce R12: 1ffff1100541fbcb
R13: 0000000044000004 R14: 000000000000000b R15: ffff88802a0fde58
spin_unlock_irq include/linux/spinlock.h:401 [inline]
get_signal+0x156e/0x1850 kernel/signal.c:2910
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0x79/0x270 kernel/entry/common.c:225
exc_page_fault+0x585/0x890 arch/x86/mm/fault.c:1566
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa1eb42c514
Code: c0 08 0f b7 c0 48 8b 54 24 10 66 89 02 e9 71 fd ff ff 48 8b 44 24 08 48 85 c0 0f 85 6c fe ff ff 48 8b 44 24 10 0f b6 54 24 18 <88> 10 e9 52 fd ff ff 48 8b 44 24 20 48 0b 44 24 28 75 31 48 8b 54
RSP: 002b:00007ffda1931040 EFLAGS: 00010246
RAX: 0000000020000220 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000085 RSI: 0000000000000000 RDI: 000055557e2c9360
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa1eb007cc0
R13: fffffffffffffffe R14: 00007fa1eb000000 R15: 00007fa1eb007cc8
----------------
Code disassembly (best guess):
0: 90 nop
1: f3 0f 1e fa endbr64
5: 53 push %rbx
6: 48 89 fb mov %rdi,%rbx
9: 48 83 c7 18 add $0x18,%rdi
d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
12: e8 fa 16 f7 f5 call 0xf5f71711
17: 48 89 df mov %rbx,%rdi
1a: e8 b2 56 f8 f5 call 0xf5f856d1
1f: e8 2d 77 21 f6 call 0xf6217751
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 42 43 ea f5 call 0xf5ea4371 <-- trapping instruction
2f: 65 8b 05 93 25 89 74 mov %gs:0x74892593(%rip),%eax # 0x748925c9
36: 85 c0 test %eax,%eax
38: 74 06 je 0x40
3a: 5b pop %rbx
3b: c3 ret
3c: cc int3
3d: cc int3
3e: cc int3
3f: cc int3