------------[ cut here ]------------ WARNING: CPU: 0 PID: 10298 at net/core/flow_dissector.c:1027 __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 Modules linked in: CPU: 0 PID: 10298 Comm: syz.6.1576 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: ffff0000db14b0b4 x27: 0000000000000002 x26: ffff800008006b70 x25: dfff800000000000 x24: 0000000000000000 x23: 1ffff00002a74a3c x22: 1ffff00002a74a3c x21: ffff8000153a51dc x20: 0000000000000000 x19: ffff700001000d38 x18: 1fffe00033e6df7e x17: 00000000ffff0000 x16: ffff800011ba0e90 x15: 0000000000000000 x14: 000000000000000a x13: 1ffff00002a74071 x12: 000000006d27f3a0 x11: ff0080000fee595c x10: 0000000000000000 x9 : ffff80000fee595c x8 : ffff0000cffa3800 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 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline] read_seqbegin+0x90/0x158 include/linux/seqlock.h:893 zone_span_seqbegin include/linux/memory_hotplug.h:132 [inline] page_outside_zone_boundaries mm/page_alloc.c:654 [inline] bad_range+0xa4/0x250 mm/page_alloc.c:681 rmqueue mm/page_alloc.c:3917 [inline] get_page_from_freelist+0x1ffc/0x2174 mm/page_alloc.c:4355 __alloc_pages+0x1d0/0x544 mm/page_alloc.c:5658 alloc_pages+0x434/0x6fc mm/mempolicy.c:-1 folio_alloc+0x28/0x6c mm/mempolicy.c:2292 filemap_alloc_folio+0xc4/0x42c mm/filemap.c:999 __filemap_get_folio+0x64c/0xaa8 mm/filemap.c:1993 pagecache_get_page+0x3c/0x16c mm/folio-compat.c:110 grab_cache_page_write_begin+0x58/0x74 mm/folio-compat.c:122 simple_write_begin+0x38/0x178 fs/libfs.c:561 generic_perform_write+0x240/0x508 mm/filemap.c:3862 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:3989 __kernel_write_iter+0x1ec/0x54c fs/read_write.c:517 dump_emit_page fs/coredump.c:950 [inline] dump_user_range+0x2f4/0x5c4 fs/coredump.c:977 elf_core_dump+0x2900/0x2e14 fs/binfmt_elf.c:2354 do_coredump+0x10dc/0x1c90 fs/coredump.c:824 get_signal+0xdfc/0x133c kernel/signal.c:2866 do_signal arch/arm64/kernel/signal.c:1095 [inline] do_notify_resume+0x2a8/0x2c84 arch/arm64/kernel/signal.c:1148 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_da+0xb4/0x144 arch/arm64/kernel/entry-common.c:516 el0t_64_sync_handler+0x90/0xf0 arch/arm64/kernel/entry-common.c:658 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 91073 hardirqs last enabled at (91072): [] __local_bh_enable_ip+0x1f8/0x37c kernel/softirq.c:426 hardirqs last disabled at (91073): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (88804): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (88804): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (91043): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---