BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 6578 Comm: syz.4.624 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline]
 ktime_get_with_offset+0x140/0x278 kernel/time/timekeeping.c:889
 ktime_get_real include/linux/timekeeping.h:79 [inline]
 net_timestamp_set net/core/dev.c:2175 [inline]
 dev_queue_xmit_nit+0x744/0x9a4 net/core/dev.c:2325
 xmit_one net/core/dev.c:3654 [inline]
 dev_hard_start_xmit+0x108/0x8e0 net/core/dev.c:3674
 sch_direct_xmit+0x204/0x480 net/sched/sch_generic.c:342
 qdisc_restart net/sched/sch_generic.c:407 [inline]
 __qdisc_run+0x8c0/0x1368 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3958 [inline]
 __dev_queue_xmit+0xc18/0x309c net/core/dev.c:4300
 dev_queue_xmit include/linux/netdevice.h:3051 [inline]
 neigh_hh_output include/net/neighbour.h:528 [inline]
 neigh_output include/net/neighbour.h:542 [inline]
 ip_finish_output2+0xb9c/0x10a4 net/ipv4/ip_output.c:228
 __ip_finish_output+0x1b0/0x448 net/ipv4/ip_output.c:-1
 ip_finish_output+0x40/0x268 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:291 [inline]
 ip_output+0x314/0x414 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:453 [inline]
 ip_local_out+0x120/0x15c net/ipv4/ip_output.c:126
 iptunnel_xmit+0x3f8/0x8cc net/ipv4/ip_tunnel_core.c:82
 udp_tunnel_xmit_skb+0x1b0/0x2c4 net/ipv4/udp_tunnel_core.c:172
 geneve_xmit_skb drivers/net/geneve.c:1011 [inline]
 geneve_xmit+0x228c/0x2f18 drivers/net/geneve.c:1124
 __netdev_start_xmit include/linux/netdevice.h:4896 [inline]
 netdev_start_xmit include/linux/netdevice.h:4910 [inline]
 xmit_one net/core/dev.c:3658 [inline]
 dev_hard_start_xmit+0x244/0x8e0 net/core/dev.c:3674
 __dev_queue_xmit+0x155c/0x309c net/core/dev.c:4334
 dev_queue_xmit include/linux/netdevice.h:3051 [inline]
 neigh_hh_output include/net/neighbour.h:528 [inline]
 neigh_output include/net/neighbour.h:542 [inline]
 ip6_finish_output2+0xd2c/0x1844 net/ipv6/ip6_output.c:138
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x594/0x930 net/ipv6/ip6_output.c:216
 NF_HOOK_COND include/linux/netfilter.h:291 [inline]
 ip6_output+0x274/0x500 net/ipv6/ip6_output.c:237
 dst_output include/net/dst.h:453 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xc38/0x1680 net/ipv6/ndisc.c:513
 ndisc_send_rs+0x378/0x514 net/ipv6/ndisc.c:723
 addrconf_rs_timer+0x2f4/0x574 net/ipv6/addrconf.c:3980
 call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x460/0x6bc kernel/time/timer.c:1820
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
 handle_softirqs+0x318/0xc6c 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+0x24/0x30 arch/arm64/kernel/entry.S:849
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:477 [inline]
 __irq_exit_rcu+0x23c/0x43c 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]
 folio_memcg_lock+0xf8/0x1fc mm/memcontrol.c:2113
 lock_page_memcg+0x48/0x58 mm/memcontrol.c:2137
 page_remove_rmap+0x44/0xe74 mm/rmap.c:1426
 zap_pte_range mm/memory.c:1453 [inline]
 zap_pmd_range mm/memory.c:1574 [inline]
 zap_pud_range mm/memory.c:1603 [inline]
 zap_p4d_range mm/memory.c:1624 [inline]
 unmap_page_range+0xc98/0x1dd0 mm/memory.c:1645
 unmap_single_vma mm/memory.c:1691 [inline]
 unmap_vmas+0x234/0x348 mm/memory.c:1730
 exit_mmap+0x154/0x934 mm/mmap.c:3246
 __mmput+0xec/0x39c kernel/fork.c:1200
 mmput+0x70/0xac kernel/fork.c:1222
 exit_mm+0x140/0x234 kernel/exit.c:565
 do_exit+0x4cc/0x19a8 kernel/exit.c:867
 do_group_exit+0x194/0x22c kernel/exit.c:1022
 get_signal+0x11d0/0x1310 kernel/signal.c:2871
 do_signal arch/arm64/kernel/signal.c:1081 [inline]
 do_notify_resume+0x340/0x2b0c arch/arm64/kernel/signal.c:1134
 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+0x98/0x138 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