------------[ cut here ]------------ WARNING: CPU: 1 PID: 19299 at net/core/flow_dissector.c:1027 __skb_flow_dissect+0x95c/0x5988 net/core/flow_dissector.c:1022 Modules linked in: CPU: 1 PID: 19299 Comm: syz.2.5199 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __skb_flow_dissect+0x95c/0x5988 net/core/flow_dissector.c:1022 lr : __skb_flow_dissect+0x95c/0x5988 net/core/flow_dissector.c:1022 sp : ffff8000080167e0 x29: ffff800008016e30 x28: ffff800008016f40 x27: 0000000000000002 x26: ffff0000f3100870 x25: ffff8000152151dc x24: dfff800000000000 x23: 0000000000000000 x22: 1ffff00002a42a3c x21: 1ffff00002a42a3c x20: ffff8000152151e2 x19: ffff700001002d40 x18: ffff800011b8bf60 x17: 00000000ffff0000 x16: ffff8000082d91a4 x15: 0000000000000000 x14: 000000000000000a x13: 1ffff00002a42071 x12: 0000000000ff0100 x11: ff0080000fda9eb0 x10: 0000000000000000 x9 : ffff80000fda9eb0 x8 : ffff0000ca010000 x7 : ffff80000fdb0d90 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff80001207b880 x0 : 0000000000000001 Call trace: __skb_flow_dissect+0x95c/0x5988 net/core/flow_dissector.c:1022 skb_flow_dissect_flow_keys include/linux/skbuff.h:1531 [inline] ___skb_get_hash+0x7c/0x5b8 net/core/flow_dissector.c:1708 __skb_get_hash+0xb8/0x228 net/core/flow_dissector.c:1773 skb_get_hash include/linux/skbuff.h:1573 [inline] nft_trace_init+0x188/0x358 net/netfilter/nf_tables_trace.c:292 nft_do_chain+0x1260/0x12e8 net/netfilter/nf_tables_core.c:243 nft_do_chain_inet+0x208/0x2e4 net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xb4/0x1f4 net/netfilter/core.c:614 nf_hook include/linux/netfilter.h:257 [inline] __ip6_local_out+0x6b0/0x7cc 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+0x434/0x8f0 net/ipv6/ip6_udp_tunnel.c:109 tipc_udp_xmit+0x484/0x9b8 net/tipc/udp_media.c:220 tipc_udp_send_msg+0x254/0x380 net/tipc/udp_media.c:258 tipc_bearer_xmit_skb+0x240/0x380 net/tipc/bearer.c:577 tipc_disc_timeout+0x4d8/0x628 net/tipc/discover.c:338 call_timer_fn+0x1b8/0x95c kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x478/0x6f0 kernel/time/timer.c:2023 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2036 handle_softirqs+0x318/0xc60 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/0x438 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] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194 __debug_check_no_obj_freed lib/debugobjects.c:988 [inline] debug_check_no_obj_freed+0x450/0x46c lib/debugobjects.c:1009 free_pages_prepare mm/page_alloc.c:1492 [inline] free_pcp_prepare mm/page_alloc.c:1536 [inline] free_unref_page_prepare+0x710/0xaf0 mm/page_alloc.c:3413 free_unref_page_list+0xd8/0x8c8 mm/page_alloc.c:3554 release_pages+0xd84/0xfb4 mm/swap.c:1035 __pagevec_release+0x84/0xf8 mm/swap.c:1055 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] shmem_undo_range+0x4f0/0x1658 mm/shmem.c:946 shmem_truncate_range mm/shmem.c:1062 [inline] shmem_evict_inode+0x214/0x8a8 mm/shmem.c:1171 evict+0x3e0/0x828 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x754/0x7e4 fs/inode.c:1860 dentry_unlink_inode+0x360/0x438 fs/dcache.c:405 __dentry_kill+0x320/0x598 fs/dcache.c:611 dentry_kill+0xc8/0x248 fs/dcache.c:-1 dput+0x238/0x454 fs/dcache.c:918 __fput+0x480/0x7b8 fs/file_table.c:328 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x1ec/0x278 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x1fa0/0x2aa4 arch/arm64/kernel/signal.c:1151 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_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638 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: 309267 hardirqs last enabled at (309266): [] __local_bh_enable_ip+0x1f8/0x37c kernel/softirq.c:426 hardirqs last disabled at (309267): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (295958): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (295958): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (309203): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---