------------[ cut here ]------------
WARNING: CPU: 0 PID: 11958 at net/core/flow_dissector.c:1107 __skb_flow_dissect+0xbde/0x6d60 net/core/flow_dissector.c:1102
Modules linked in:
CPU: 0 PID: 11958 Comm: syz.0.1182 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__skb_flow_dissect+0xbde/0x6d60 net/core/flow_dissector.c:1107
Code: db 59 00 00 80 3d f0 a1 fd 05 01 0f 85 01 5a 00 00 e8 46 1c 0f f9 e9 17 f9 ff ff e8 3c 1c 0f f9 e9 b4 03 00 00 e8 32 1c 0f f9 <0f> 0b e9 00 ff ff ff e8 26 1c 0f f9 c6 05 bb a1 fd 05 01 48 c7 c7
RSP: 0018:ffffc90000006980 EFLAGS: 00010246
RAX: ffffffff887805ce RBX: ffff888079f839f0 RCX: ffff8880668f0000
RDX: 0000000000000100 RSI: ffffffff8b1c8fc0 RDI: ffffffff8b1c8f80
RBP: ffffc90000006f98 R08: dffffc0000000000 R09: 1ffffffff2238ca0
R10: dffffc0000000000 R11: fffffbfff2238ca1 R12: ffffffff8e8b8bb8
R13: ffffffff8877fbe9 R14: 0000000000000000 R15: 1ffffffff1d17178
FS: 00007f9b67e526c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3d054b CR3: 000000002d211000 CR4: 00000000003506f0
Call Trace:
skb_flow_dissect_flow_keys include/linux/skbuff.h:1544 [inline]
___skb_get_hash net/core/flow_dissector.c:1801 [inline]
__skb_get_hash+0xf3/0x2e0 net/core/flow_dissector.c:1866
skb_get_hash include/linux/skbuff.h:1586 [inline]
nft_trace_init+0x1bb/0x410 net/netfilter/nf_tables_trace.c:316
nft_do_chain+0x14fc/0x1600 net/netfilter/nf_tables_core.c:268
nf_route_table_hook6+0x366/0x7b0 net/netfilter/nft_chain_route.c:88
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:259 [inline]
__ip6_local_out+0x784/0x8a0 net/ipv6/output_core.c:143
ip6_local_out+0x2a/0x130 net/ipv6/output_core.c:153
ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
udp_tunnel6_xmit_skb+0x53e/0x970 net/ipv6/ip6_udp_tunnel.c:109
tipc_udp_xmit+0x58d/0xb40 net/tipc/udp_media.c:220
tipc_bearer_xmit_skb+0x2ad/0x3f0 net/tipc/bearer.c:575
tipc_disc_timeout+0x596/0x6f0 net/tipc/discover.c:338
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5255
Code: 0f 84 33 01 00 00 48 85 db 0f 85 52 01 00 00 e9 de 04 00 00 4c 8b 75 d0 4c 89 e7 e8 00 b9 32 09 e8 9b 29 30 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900035e7578 EFLAGS: 00000286
RAX: 2dc344c8d89a5f00 RBX: 0000000000000000 RCX: 2dc344c8d89a5f00
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: ffffffff8b1c8fe0
RBP: ffffc900035e75d0 R08: ffffffff911c6537 R09: 1ffffffff2238ca6
R10: dffffc0000000000 R11: fffffbfff2238ca7 R12: ffff8880668f0000
R13: dffffc0000000000 R14: ffff888023c73c00 R15: ffff8880b8e3cac8
context_switch kernel/sched/core.c:5384 [inline]
__schedule+0x155b/0x45a0 kernel/sched/core.c:6700
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:vma_has_recency include/linux/mm_inline.h:602 [inline]
RIP: 0010:lru_gen_enter_fault mm/memory.c:5263 [inline]
RIP: 0010:handle_mm_fault+0x2f3/0x4c00 mm/memory.c:5348
Code: 04 48 8b 44 24 10 48 8d 58 20 48 89 d8 48 c1 e8 03 48 89 44 24 20 42 80 3c 30 00 74 08 48 89 df e8 32 9e 14 00 48 89 5c 24 18 <48> 8b 1b 48 89 de 48 81 e6 00 80 01 00 31 ff e8 29 6b bc ff 48 81
RSP: 0018:ffffc900035e7960 EFLAGS: 00000246
RAX: 1ffff1100ed30924 RBX: ffff888076984920 RCX: 0000000000080000
RDX: ffffc9000ce2a000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900035e7b30 R08: ffffffff8e8b19ef R09: 1ffffffff1d1633d
R10: dffffc0000000000 R11: fffffbfff1d1633e R12: ffff8880668f0000
R13: ffff888076984910 R14: dffffc0000000000 R15: 0000000000000014
faultin_page mm/gup.c:868 [inline]
__get_user_pages+0x5d0/0x1380 mm/gup.c:1167
populate_vma_page_range+0x2c1/0x380 mm/gup.c:1593
__mm_populate+0x260/0x390 mm/gup.c:1696
mm_populate include/linux/mm.h:3383 [inline]
vm_mmap_pgoff+0x2da/0x3f0 mm/util.c:561
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9b66f9cdd9
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:00007f9b67e52028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f9b67215fa0 RCX: 00007f9b66f9cdd9
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f9b67032d69 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b67216038 R14: 00007f9b67215fa0 R15: 00007ffcdb072938
----------------
Code disassembly (best guess):
0: 0f 84 33 01 00 00 je 0x139
6: 48 85 db test %rbx,%rbx
9: 0f 85 52 01 00 00 jne 0x161
f: e9 de 04 00 00 jmp 0x4f2
14: 4c 8b 75 d0 mov -0x30(%rbp),%r14
18: 4c 89 e7 mov %r12,%rdi
1b: e8 00 b9 32 09 call 0x932b920
20: e8 9b 29 30 00 call 0x3029c0
25: fb sti
26: 4c 8b 65 c0 mov -0x40(%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 28 movzbl (%rax,%r13,1),%eax
3e: 84 c0 test %al,%al