------------[ cut here ]------------ WARNING: CPU: 0 PID: 4334 at net/core/flow_dissector.c:1027 __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 Modules linked in: CPU: 0 PID: 4334 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 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 : ffff8000080068e0 x29: ffff800008006e90 x28: ffff0000f57ca0a0 x27: 0000000000000002 x26: ffff800008006c10 x25: dfff800000000000 x24: 0000000000000000 x23: 1ffff00002a70a3c x22: 1ffff00002a70a3c x21: ffff8000153851dc x20: 0000000000000000 x19: ffff700001000d4c x18: 1fffe00033e7277e x17: 00000000ffff0000 x16: ffff800011b90080 x15: 0000000000000000 x14: 000000000000000a x13: 1ffff00002a70071 x12: 00000000c4d3a6e0 x11: ff0080000fedbf94 x10: 0000000000000000 x9 : ffff80000fedbf94 x8 : ffff0000da805400 x7 : ffff80000fee2dcc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff8000121e1f80 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_inet+0x20c/0x2ec net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xc8/0x208 net/netfilter/core.c:614 nf_hook include/linux/netfilter.h:257 [inline] __ip6_local_out+0x6c0/0x7dc net/ipv6/output_core.c:149 ip6_local_out+0x3c/0x15c net/ipv6/output_core.c:159 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline] udp_tunnel6_xmit_skb+0x424/0x910 net/ipv6/ip6_udp_tunnel.c:110 tipc_udp_xmit+0x470/0x930 net/tipc/udp_media.c:220 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:338 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 bytes_is_nonzero mm/kasan/generic.c:85 [inline] memory_is_nonzero mm/kasan/generic.c:102 [inline] memory_is_poisoned_n mm/kasan/generic.c:128 [inline] memory_is_poisoned mm/kasan/generic.c:159 [inline] check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0x68/0x290 mm/kasan/generic.c:189 __kasan_check_read+0x2c/0x3c mm/kasan/shadow.c:31 instrument_atomic_read include/linux/instrumented.h:72 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] page_table_check_set+0x1e8/0x41c mm/page_table_check.c:127 __page_table_check_pte_set+0x110/0x134 mm/page_table_check.c:208 page_table_check_pte_set include/linux/page_table_check.h:83 [inline] set_pte_at arch/arm64/include/asm/pgtable.h:358 [inline] copy_present_pte mm/memory.c:1000 [inline] copy_pte_range mm/memory.c:1091 [inline] copy_pmd_range mm/memory.c:1177 [inline] copy_pud_range mm/memory.c:1214 [inline] copy_p4d_range mm/memory.c:1238 [inline] copy_page_range+0x1e80/0x29b4 mm/memory.c:1332 dup_mmap kernel/fork.c:703 [inline] dup_mm kernel/fork.c:1548 [inline] copy_mm+0xb08/0x1208 kernel/fork.c:1597 copy_process+0x1718/0x38f4 kernel/fork.c:2358 kernel_clone+0x1ec/0x938 kernel/fork.c:2765 __do_sys_clone kernel/fork.c:2906 [inline] __se_sys_clone kernel/fork.c:2874 [inline] __arm64_sys_clone+0x15c/0x1c8 kernel/fork.c:2874 __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: 1143469 hardirqs last enabled at (1143468): [] __local_bh_enable_ip+0x1f8/0x37c kernel/softirq.c:426 hardirqs last disabled at (1143469): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1143056): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1143445): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---