[  101.907040][    C2] 
[  101.907380][    C2] =============================
[  101.907559][    C2] WARNING: suspicious RCU usage
[  101.907732][    C2] 6.13.0-virtme #1 Not tainted
[  101.907904][    C2] -----------------------------
[  101.908095][    C2] ./include/net/net_namespace.h:404 suspicious rcu_dereference_check() usage!
[  101.908386][    C2] 
[  101.908386][    C2] other info that might help us debug this:
[  101.908386][    C2] 
[  101.908707][    C2] 
[  101.908707][    C2] rcu_scheduler_active = 2, debug_locks = 1
[  101.908955][    C2] 1 lock held by swapper/2/0:
[  101.909141][    C2]  #0: ffffc90000238d60 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[  101.909454][    C2] 
[  101.909454][    C2] stack backtrace:
[  101.909662][    C2] CPU: 2 UID: 0 PID: 0 Comm: swapper/2 Not tainted 6.13.0-virtme #1
[  101.909666][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  101.909667][    C2] Call Trace:
[  101.909669][    C2]  <IRQ>
[  101.909672][    C2]  dump_stack_lvl+0xb0/0xd0
[  101.909681][    C2]  lockdep_rcu_suspicious+0x1ea/0x280
[  101.909690][    C2]  __icmp_send+0xafd/0x1570
[  101.909702][    C2]  ? __lock_acquire+0xb9a/0x1680
[  101.909707][    C2]  ? __pfx___icmp_send+0x10/0x10
[  101.909721][    C2]  ? rcu_read_lock_any_held+0x43/0xb0
[  101.909726][    C2]  ? validate_chain+0x1fe/0xae0
[  101.909737][    C2]  ? __pfx_validate_chain+0x10/0x10
[  101.909741][    C2]  ? hlock_class+0x4e/0x130
[  101.909744][    C2]  ? mark_lock+0x38/0x3e0
[  101.909753][    C2]  ? __lock_acquire+0xb9a/0x1680
[  101.909762][    C2]  ipv4_send_dest_unreach+0x3b5/0x820
[  101.909767][    C2]  ? neigh_invalidate+0x1c7/0x540
[  101.909772][    C2]  ? __pfx_ipv4_send_dest_unreach+0x10/0x10
[  101.909785][    C2]  ipv4_link_failure+0x1b/0x190
[  101.909790][    C2]  arp_error_report+0x96/0x170
[  101.909797][    C2]  neigh_invalidate+0x209/0x540
[  101.909806][    C2]  neigh_timer_handler+0x87a/0xdf0
[  101.909815][    C2]  ? __pfx_neigh_timer_handler+0x10/0x10
[  101.909819][    C2]  call_timer_fn+0x13b/0x230
[  101.909822][    C2]  ? call_timer_fn+0xe8/0x230
[  101.909824][    C2]  ? call_timer_fn+0xe8/0x230
[  101.909828][    C2]  ? __pfx_call_timer_fn+0x10/0x10
[  101.909830][    C2]  ? mark_lock+0x38/0x3e0
[  101.909848][    C2]  __run_timers+0x545/0x810
[  101.909851][    C2]  ? __pfx_neigh_timer_handler+0x10/0x10
[  101.909861][    C2]  ? __pfx___run_timers+0x10/0x10
[  101.909864][    C2]  ? clockevents_program_event+0xf6/0x300
[  101.909873][    C2]  ? do_raw_spin_lock+0x131/0x270
[  101.909879][    C2]  ? __pfx_do_raw_spin_lock+0x10/0x10
[  101.909883][    C2]  ? lock_acquire+0x32/0xc0
[  101.909886][    C2]  ? run_timer_softirq+0xe6/0x1c0
[  101.909895][    C2]  run_timer_softirq+0xee/0x1c0
[  101.909899][    C2]  handle_softirqs+0x1f6/0x5c0
[  101.909911][    C2]  __irq_exit_rcu+0xc4/0x100
[  101.909914][    C2]  irq_exit_rcu+0xe/0x20
[  101.909917][    C2]  sysvec_apic_timer_interrupt+0x78/0x90
[  101.909921][    C2]  </IRQ>
[  101.909922][    C2]  <TASK>
[  101.909924][    C2]  asm_sysvec_apic_timer_interrupt+0x1a/0x20
[  101.909928][    C2] RIP: 0010:default_idle+0xf/0x20
[  101.909932][    C2] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 2c 13 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
[  101.909935][    C2] RSP: 0018:ffffc90000167df8 EFLAGS: 00000242
[  101.909938][    C2] RAX: 000000000025355b RBX: 1ffff9200002cfc1 RCX: ffffffff94f2eb15
[  101.909940][    C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff92769aa4
[  101.909941][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2703a
[  101.909943][    C2] R10: ffff8880361381d3 R11: ffff888001b38040 R12: 0000000000000000
[  101.909944][    C2] R13: ffff888001b38040 R14: dffffc0000000000 R15: 0000000000000000
[  101.909953][    C2]  ? ct_kernel_exit.constprop.0+0xc5/0xf0
[  101.909957][    C2]  ? cpuidle_idle_call+0x1f4/0x280
[  101.909966][    C2]  default_idle_call+0x6d/0xb0
[  101.909968][    C2]  cpuidle_idle_call+0x1f4/0x280
[  101.909972][    C2]  ? __pfx_cpuidle_idle_call+0x10/0x10
[  101.909979][    C2]  ? tsc_verify_tsc_adjust+0x5e/0x2b0
[  101.909989][    C2]  do_idle+0xf6/0x160
[  101.909995][    C2]  cpu_startup_entry+0x54/0x60
[  101.909999][    C2]  start_secondary+0x21e/0x2b0
[  101.910004][    C2]  ? __pfx_start_secondary+0x10/0x10
[  101.910013][    C2]  common_startup_64+0x12c/0x138
[  101.910036][    C2]  </TASK>