[   16.826568][  T290] ip (290) used greatest stack depth: 23912 bytes left
[  264.431001][ T2851] netem: version 1.3
[  272.626770][ T2882] ip (2882) used greatest stack depth: 23656 bytes left
[  275.729401][    C1] 
[  275.729741][    C1] =============================
[  275.730001][    C1] WARNING: suspicious RCU usage
[  275.730206][    C1] 6.13.0-virtme #1 Not tainted
[  275.730454][    C1] -----------------------------
[  275.730657][    C1] ./include/net/net_namespace.h:404 suspicious rcu_dereference_check() usage!
[  275.731033][    C1] 
[  275.731033][    C1] other info that might help us debug this:
[  275.731033][    C1] 
[  275.731471][    C1] 
[  275.731471][    C1] rcu_scheduler_active = 2, debug_locks = 1
[  275.731799][    C1] 1 lock held by swapper/1/0:
[  275.732000][    C1]  #0: ffffc900001e0ae8 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[  275.732354][    C1] 
[  275.732354][    C1] stack backtrace:
[  275.732638][    C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.13.0-virtme #1
[  275.732643][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  275.732646][    C1] Call Trace:
[  275.732647][    C1]  <IRQ>
[  275.732651][    C1]  dump_stack_lvl+0xb0/0xd0
[  275.732663][    C1]  lockdep_rcu_suspicious+0x1ea/0x280
[  275.732678][    C1]  __icmp_send+0xb0d/0x1580
[  275.732695][    C1]  ? tcp_data_queue+0x8/0x22d0
[  275.732701][    C1]  ? lockdep_hardirqs_on_prepare+0x12b/0x410
[  275.732712][    C1]  ? __pfx___icmp_send+0x10/0x10
[  275.732719][    C1]  ? tcp_check_space+0x3ce/0x5f0
[  275.732742][    C1]  ? rcu_read_lock_any_held+0x43/0xb0
[  275.732750][    C1]  ? validate_chain+0x1fe/0xae0
[  275.732771][    C1]  ? __pfx_validate_chain+0x10/0x10
[  275.732778][    C1]  ? hlock_class+0x4e/0x130
[  275.732784][    C1]  ? mark_lock+0x38/0x3e0
[  275.732788][    C1]  ? sock_put+0x1a/0x60
[  275.732806][    C1]  ? __lock_acquire+0xb9a/0x1680
[  275.732822][    C1]  ipv4_send_dest_unreach+0x3b4/0x800
[  275.732829][    C1]  ? neigh_invalidate+0x1c7/0x540
[  275.732837][    C1]  ? __pfx_ipv4_send_dest_unreach+0x10/0x10
[  275.732850][    C1]  ipv4_link_failure+0x1b/0x190
[  275.732856][    C1]  arp_error_report+0x96/0x170
[  275.732862][    C1]  neigh_invalidate+0x209/0x540
[  275.732873][    C1]  neigh_timer_handler+0x87a/0xdf0
[  275.732883][    C1]  ? __pfx_neigh_timer_handler+0x10/0x10
[  275.732886][    C1]  call_timer_fn+0x13b/0x230
[  275.732891][    C1]  ? call_timer_fn+0xe8/0x230
[  275.732894][    C1]  ? call_timer_fn+0xe8/0x230
[  275.732899][    C1]  ? __pfx_call_timer_fn+0x10/0x10
[  275.732902][    C1]  ? mark_lock+0x38/0x3e0
[  275.732920][    C1]  __run_timers+0x545/0x810
[  275.732925][    C1]  ? __pfx_neigh_timer_handler+0x10/0x10
[  275.732936][    C1]  ? __pfx___run_timers+0x10/0x10
[  275.732939][    C1]  ? __lock_release+0x103/0x460
[  275.732947][    C1]  ? do_raw_spin_lock+0x131/0x270
[  275.732952][    C1]  ? __pfx_do_raw_spin_lock+0x10/0x10
[  275.732956][    C1]  ? lock_acquire+0x32/0xc0
[  275.732958][    C1]  ? timer_expire_remote+0x96/0xf0
[  275.732967][    C1]  timer_expire_remote+0x9e/0xf0
[  275.732970][    C1]  tmigr_handle_remote_cpu+0x278/0x440
[  275.732977][    C1]  ? __pfx_tmigr_handle_remote_cpu+0x10/0x10
[  275.732981][    C1]  ? __pfx___lock_release+0x10/0x10
[  275.732985][    C1]  ? __pfx_lock_acquire.part.0+0x10/0x10
[  275.733015][    C1]  tmigr_handle_remote_up+0x1a6/0x270
[  275.733027][    C1]  ? __pfx_tmigr_handle_remote_up+0x10/0x10
[  275.733036][    C1]  __walk_groups.isra.0+0x44/0x160
[  275.733051][    C1]  tmigr_handle_remote+0x20b/0x300
[  275.733059][    C1]  ? __pfx_tmigr_handle_remote+0x10/0x10
[  275.733064][    C1]  ? kvm_clock_get_cycles+0x18/0x30
[  275.733071][    C1]  ? ktime_get+0xb8/0x200
[  275.733082][    C1]  ? clockevents_program_event+0x1ea/0x300
[  275.733106][    C1]  handle_softirqs+0x1f6/0x5c0
[  275.733129][    C1]  __irq_exit_rcu+0xc4/0x100
[  275.733135][    C1]  irq_exit_rcu+0xe/0x20
[  275.733139][    C1]  sysvec_apic_timer_interrupt+0x78/0x90
[  275.733146][    C1]  </IRQ>
[  275.733148][    C1]  <TASK>
[  275.733152][    C1]  asm_sysvec_apic_timer_interrupt+0x1a/0x20
[  275.733159][    C1] RIP: 0010:default_idle+0xf/0x20
[  275.733165][    C1] 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 8c 0a 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
[  275.733169][    C1] RSP: 0018:ffffc90000157df8 EFLAGS: 00000242
[  275.733174][    C1] RAX: 0000000000c962b3 RBX: 1ffff9200002afc1 RCX: ffffffff97bb8b15
[  275.733178][    C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9536a634
[  275.733181][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1703a
[  275.733184][    C1] R10: ffff8880360b81d3 R11: ffff888001af45c0 R12: 0000000000000000
[  275.733188][    C1] R13: ffff888001af45c0 R14: dffffc0000000000 R15: 0000000000000000
[  275.733201][    C1]  ? ct_kernel_exit.constprop.0+0xc5/0xf0
[  275.733205][    C1]  ? cpuidle_idle_call+0x1f4/0x280
[  275.733214][    C1]  default_idle_call+0x6d/0xb0
[  275.733217][    C1]  cpuidle_idle_call+0x1f4/0x280
[  275.733221][    C1]  ? __pfx_cpuidle_idle_call+0x10/0x10
[  275.733228][    C1]  ? tsc_verify_tsc_adjust+0x5e/0x2b0
[  275.733238][    C1]  do_idle+0xf6/0x160
[  275.733244][    C1]  cpu_startup_entry+0x54/0x60
[  275.733248][    C1]  start_secondary+0x21e/0x2b0
[  275.733253][    C1]  ? __pfx_start_secondary+0x10/0x10
[  275.733264][    C1]  common_startup_64+0x12c/0x138
[  275.733283][    C1]  </TASK>
[ 1891.363826][T19911] pm_nl_ctl (19911) used greatest stack depth: 22784 bytes left