[ 11.374625][ T249] ip (249) used greatest stack depth: 24448 bytes left [ 12.755383][ T278] ip (278) used greatest stack depth: 23664 bytes left [ 16.815262][ T326] gre: GRE over IPv4 demultiplexor driver [ 16.832918][ T326] ip_gre: GRE over IPv4 tunneling driver [ 18.719270][ T350] 8021q: 802.1Q VLAN Support v1.8 [ 22.262453][ T388] GACT probability NOT on [ 39.298492][ C3] [ 39.298836][ C3] ============================= [ 39.299019][ C3] WARNING: suspicious RCU usage [ 39.299194][ C3] 6.13.0-virtme #1 Not tainted [ 39.299374][ C3] ----------------------------- [ 39.299556][ C3] ./include/net/net_namespace.h:404 suspicious rcu_dereference_check() usage! [ 39.299860][ C3] [ 39.299860][ C3] other info that might help us debug this: [ 39.299860][ C3] [ 39.300177][ C3] [ 39.300177][ C3] rcu_scheduler_active = 2, debug_locks = 1 [ 39.300433][ C3] 1 lock held by swapper/3/0: [ 39.300625][ C3] #0: ffffc90000290d60 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 39.300946][ C3] [ 39.300946][ C3] stack backtrace: [ 39.301305][ C3] CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Not tainted 6.13.0-virtme #1 [ 39.301310][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 39.301312][ C3] Call Trace: [ 39.301313][ C3] [ 39.301317][ C3] dump_stack_lvl+0xb0/0xd0 [ 39.301326][ C3] lockdep_rcu_suspicious+0x1ea/0x280 [ 39.301336][ C3] __icmp_send+0xb0d/0x1580 [ 39.301344][ C3] ? hlock_class+0x4e/0x130 [ 39.301347][ C3] ? mark_lock+0x38/0x3e0 [ 39.301352][ C3] ? __pfx_validate_chain+0x10/0x10 [ 39.301356][ C3] ? __pfx___icmp_send+0x10/0x10 [ 39.301362][ C3] ? rcu_read_lock_any_held+0x43/0xb0 [ 39.301375][ C3] ? rcu_read_lock_any_held+0x43/0xb0 [ 39.301378][ C3] ? validate_chain+0x1fe/0xae0 [ 39.301390][ C3] ? __pfx_validate_chain+0x10/0x10 [ 39.301394][ C3] ? hlock_class+0x4e/0x130 [ 39.301396][ C3] ? mark_lock+0x38/0x3e0 [ 39.301406][ C3] ? __lock_acquire+0xb9a/0x1680 [ 39.301415][ C3] ipv4_send_dest_unreach+0x3b4/0x800 [ 39.301420][ C3] ? neigh_invalidate+0x1c7/0x540 [ 39.301425][ C3] ? __pfx_ipv4_send_dest_unreach+0x10/0x10 [ 39.301440][ C3] ipv4_link_failure+0x1b/0x190 [ 39.301445][ C3] arp_error_report+0x96/0x170 [ 39.301452][ C3] neigh_invalidate+0x209/0x540 [ 39.301461][ C3] neigh_timer_handler+0x87a/0xdf0 [ 39.301471][ C3] ? __pfx_neigh_timer_handler+0x10/0x10 [ 39.301474][ C3] call_timer_fn+0x13b/0x230 [ 39.301478][ C3] ? call_timer_fn+0xe8/0x230 [ 39.301481][ C3] ? call_timer_fn+0xe8/0x230 [ 39.301484][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 39.301487][ C3] ? mark_lock+0x38/0x3e0 [ 39.301505][ C3] __run_timers+0x545/0x810 [ 39.301508][ C3] ? __pfx_neigh_timer_handler+0x10/0x10 [ 39.301518][ C3] ? __pfx___run_timers+0x10/0x10 [ 39.301521][ C3] ? clockevents_program_event+0xf6/0x300 [ 39.301530][ C3] ? do_raw_spin_lock+0x131/0x270 [ 39.301535][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 39.301540][ C3] ? lock_acquire+0x32/0xc0 [ 39.301543][ C3] ? run_timer_softirq+0xe6/0x1c0 [ 39.301552][ C3] run_timer_softirq+0xee/0x1c0 [ 39.301557][ C3] handle_softirqs+0x1f6/0x5c0 [ 39.301570][ C3] __irq_exit_rcu+0xc4/0x100 [ 39.301573][ C3] irq_exit_rcu+0xe/0x20 [ 39.301576][ C3] sysvec_apic_timer_interrupt+0x78/0x90 [ 39.301580][ C3] [ 39.301581][ C3] [ 39.301584][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.301589][ C3] RIP: 0010:default_idle+0xf/0x20 [ 39.301593][ C3] 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 cc 14 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 39.301596][ C3] RSP: 0018:ffffc90000177df8 EFLAGS: 00000242 [ 39.301599][ C3] RAX: 00000000000b3179 RBX: 1ffff9200002efc1 RCX: ffffffffa6d14b15 [ 39.301601][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa4569634 [ 39.301603][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3703a [ 39.301604][ C3] R10: ffff8880361b81d3 R11: ffff888001b3a300 R12: 0000000000000000 [ 39.301606][ C3] R13: ffff888001b3a300 R14: dffffc0000000000 R15: 0000000000000000 [ 39.301615][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 39.301620][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 39.301628][ C3] default_idle_call+0x6d/0xb0 [ 39.301631][ C3] cpuidle_idle_call+0x1f4/0x280 [ 39.301636][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 39.301643][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 39.301653][ C3] do_idle+0xf6/0x160 [ 39.301659][ C3] cpu_startup_entry+0x54/0x60 [ 39.301663][ C3] start_secondary+0x21e/0x2b0 [ 39.301668][ C3] ? __pfx_start_secondary+0x10/0x10 [ 39.301678][ C3] common_startup_64+0x12c/0x138 [ 39.301698][ C3] [ 100.098476][ C3] [ 100.098758][ C3] ============================= [ 100.099092][ C3] WARNING: suspicious RCU usage [ 100.099413][ C3] 6.13.0-virtme #1 Not tainted [ 100.099739][ C3] ----------------------------- [ 100.100043][ C3] ./include/net/net_namespace.h:404 suspicious rcu_dereference_check() usage! [ 100.100581][ C3] [ 100.100581][ C3] other info that might help us debug this: [ 100.100581][ C3] [ 100.101166][ C3] [ 100.101166][ C3] rcu_scheduler_active = 2, debug_locks = 1 [ 100.101644][ C3] 1 lock held by swapper/3/0: [ 100.101969][ C3] #0: ffffc90000290d60 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 100.102538][ C3] [ 100.102538][ C3] stack backtrace: [ 100.102893][ C3] CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Not tainted 6.13.0-virtme #1 [ 100.102900][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.102903][ C3] Call Trace: [ 100.102906][ C3] [ 100.102911][ C3] dump_stack_lvl+0xb0/0xd0 [ 100.102923][ C3] lockdep_rcu_suspicious+0x1ea/0x280 [ 100.102938][ C3] icmp6_send+0x10ab/0x1bf0 [ 100.102972][ C3] ? __pfx_icmp6_send+0x10/0x10 [ 100.102987][ C3] ? __pfx_validate_chain+0x10/0x10 [ 100.102995][ C3] ? hlock_class+0x4e/0x130 [ 100.103001][ C3] ? mark_lock+0x38/0x3e0 [ 100.103018][ C3] ? __lock_acquire+0xb9a/0x1680 [ 100.103030][ C3] ? find_held_lock+0x2c/0x110 [ 100.103041][ C3] ? __lock_release+0x103/0x460 [ 100.103046][ C3] ? neigh_invalidate+0x1c7/0x540 [ 100.103054][ C3] ? __pfx___lock_release+0x10/0x10 [ 100.103060][ C3] ? lock_acquire.part.0+0xeb/0x330 [ 100.103081][ C3] ip6_link_failure+0x30/0x430 [ 100.103094][ C3] ndisc_error_report+0x96/0x170 [ 100.103105][ C3] neigh_invalidate+0x209/0x540 [ 100.103122][ C3] neigh_timer_handler+0x87a/0xdf0 [ 100.103140][ C3] ? __pfx_neigh_timer_handler+0x10/0x10 [ 100.103145][ C3] call_timer_fn+0x13b/0x230 [ 100.103150][ C3] ? call_timer_fn+0xe8/0x230 [ 100.103154][ C3] ? call_timer_fn+0xe8/0x230 [ 100.103161][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 100.103166][ C3] ? mark_lock+0x38/0x3e0 [ 100.103198][ C3] __run_timers+0x545/0x810 [ 100.103204][ C3] ? __pfx_neigh_timer_handler+0x10/0x10 [ 100.103224][ C3] ? __pfx___run_timers+0x10/0x10 [ 100.103229][ C3] ? clockevents_program_event+0xf6/0x300 [ 100.103243][ C3] ? do_raw_spin_lock+0x131/0x270 [ 100.103254][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 100.103261][ C3] ? lock_acquire+0x32/0xc0 [ 100.103266][ C3] ? run_timer_softirq+0xe6/0x1c0 [ 100.103283][ C3] run_timer_softirq+0xee/0x1c0 [ 100.103293][ C3] handle_softirqs+0x1f6/0x5c0 [ 100.103314][ C3] __irq_exit_rcu+0xc4/0x100 [ 100.103320][ C3] irq_exit_rcu+0xe/0x20 [ 100.103325][ C3] sysvec_apic_timer_interrupt+0x78/0x90 [ 100.103332][ C3] [ 100.103334][ C3] [ 100.103339][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 100.103346][ C3] RIP: 0010:default_idle+0xf/0x20 [ 100.103352][ C3] 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 cc 14 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 100.103357][ C3] RSP: 0018:ffffc90000177df8 EFLAGS: 00000246 [ 100.103362][ C3] RAX: 0000000000123e17 RBX: 1ffff9200002efc1 RCX: ffffffffa6d14b15 [ 100.103365][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa4569634 [ 100.103368][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3703a [ 100.103371][ C3] R10: ffff8880361b81d3 R11: ffff888001b3a300 R12: 0000000000000000 [ 100.103374][ C3] R13: ffff888001b3a300 R14: dffffc0000000000 R15: 0000000000000000 [ 100.103391][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 100.103399][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 100.103413][ C3] default_idle_call+0x6d/0xb0 [ 100.103418][ C3] cpuidle_idle_call+0x1f4/0x280 [ 100.103426][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 100.103441][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 100.103457][ C3] do_idle+0xf6/0x160 [ 100.103468][ C3] cpu_startup_entry+0x54/0x60 [ 100.103475][ C3] start_secondary+0x21e/0x2b0 [ 100.103483][ C3] ? __pfx_start_secondary+0x10/0x10 [ 100.103502][ C3] common_startup_64+0x12c/0x138 [ 100.103538][ C3] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr