------------[ cut here ]------------ WARNING: CPU: 0 PID: 8905 at net/core/flow_dissector.c:1027 __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 Modules linked in: CPU: 0 PID: 8905 Comm: dhcpcd-run-hook Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 lr : __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 sp : ffff800008006840 x29: ffff800008006df0 x28: ffff0000f270e0b4 x27: 0000000000000002 x26: ffff800008006b70 x25: dfff800000000000 x24: 0000000000000000 x23: 1ffff00002a74a3c x22: 1ffff00002a74a3c x21: ffff8000153a51dc x20: 0000000000000000 x19: ffff700001000d38 x18: 0000000000000000 x17: 00000000ffff0000 x16: ffff800011ba0e90 x15: 0000000000000000 x14: 000000000000000a x13: 1ffff00002a74071 x12: 00000000dace5317 x11: ff0080000fee595c x10: 0000000000000000 x9 : ffff80000fee595c x8 : ffff0000e7935400 x7 : ffff80000feec794 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff8000121f2440 x0 : 0000000000000001 Call trace: __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 skb_flow_dissect_flow_keys include/linux/skbuff.h:1531 [inline] ___skb_get_hash+0x7c/0x5e0 net/core/flow_dissector.c:1713 __skb_get_hash+0xb8/0x22c net/core/flow_dissector.c:1778 skb_get_hash include/linux/skbuff.h:1573 [inline] nft_trace_init+0x190/0x36c net/netfilter/nf_tables_trace.c:292 nft_do_chain+0x12d4/0x1364 net/netfilter/nf_tables_core.c:243 nft_do_chain_ipv4+0x128/0x1e8 net/netfilter/nft_chain_filter.c:23 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xc8/0x208 net/netfilter/core.c:614 nf_hook+0x1d0/0x338 include/linux/netfilter.h:257 __ip_local_out+0x4b8/0x5fc net/ipv4/ip_output.c:115 ip_local_out+0x3c/0x15c net/ipv4/ip_output.c:124 iptunnel_xmit+0x3c4/0x860 net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x1c0/0x2f0 net/ipv4/udp_tunnel_core.c:172 tipc_udp_xmit+0x70c/0x930 net/tipc/udp_media.c:198 tipc_udp_send_msg+0x214/0x36c net/tipc/udp_media.c:271 tipc_bearer_xmit_skb+0x240/0x380 net/tipc/bearer.c:578 tipc_disc_timeout+0x4e8/0x630 net/tipc/discover.c:340 call_timer_fn+0x1b8/0x96c kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x478/0x6d8 kernel/time/timer.c:2023 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2036 handle_softirqs+0x318/0xc90 kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x430 kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 __preempt_count_add arch/arm64/include/asm/preempt.h:47 [inline] rcu_is_watching+0x34/0x134 kernel/rcu/tree.c:720 rcu_read_unlock_sched include/linux/rcupdate.h:902 [inline] pfn_valid+0x2e8/0x3cc include/linux/mmzone.h:1867 page_table_check_clear+0x34/0x40c mm/page_table_check.c:67 __page_table_check_pte_clear+0x7c/0x9c mm/page_table_check.c:168 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline] ptep_get_and_clear arch/arm64/include/asm/pgtable.h:946 [inline] ptep_get_and_clear_full include/linux/pgtable.h:429 [inline] zap_pte_range mm/memory.c:1433 [inline] zap_pmd_range mm/memory.c:1572 [inline] zap_pud_range mm/memory.c:1601 [inline] zap_p4d_range mm/memory.c:1622 [inline] unmap_page_range+0x1a48/0x1f44 mm/memory.c:1643 unmap_single_vma mm/memory.c:1689 [inline] unmap_vmas+0x244/0x364 mm/memory.c:1728 exit_mmap+0x170/0x944 mm/mmap.c:3250 __mmput+0xe8/0x38c kernel/fork.c:1210 mmput+0x70/0xa8 kernel/fork.c:1232 exit_mm+0x20c/0x290 kernel/exit.c:572 do_exit+0x4d0/0x19ac kernel/exit.c:874 do_group_exit+0x198/0x238 kernel/exit.c:1030 __do_sys_exit_group kernel/exit.c:1041 [inline] __se_sys_exit_group kernel/exit.c:1039 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1039 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 11249 hardirqs last enabled at (11248): [] __local_bh_enable_ip+0x1f8/0x37c kernel/softirq.c:426 hardirqs last disabled at (11249): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (11068): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (11229): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---