[ 12.205253][ T249] ip (249) used greatest stack depth: 23960 bytes left
[ 17.361783][ T323] gre: GRE over IPv4 demultiplexor driver
[ 17.417486][ T323] ip6_gre: GRE over IPv6 tunneling driver
[ 17.557980][ T327] ip (327) used greatest stack depth: 23696 bytes left
[ 19.078514][ T345] 8021q: 802.1Q VLAN Support v1.8
[ 22.518209][ T384] GACT probability NOT on
[ 37.174381][ C2]
[ 37.174800][ C2] =============================
[ 37.175039][ C2] WARNING: suspicious RCU usage
[ 37.175241][ C2] 6.13.0-virtme #1 Not tainted
[ 37.175470][ C2] -----------------------------
[ 37.175708][ C2] ./include/net/net_namespace.h:404 suspicious rcu_dereference_check() usage!
[ 37.176060][ C2]
[ 37.176060][ C2] other info that might help us debug this:
[ 37.176060][ C2]
[ 37.176462][ C2]
[ 37.176462][ C2] rcu_scheduler_active = 2, debug_locks = 1
[ 37.176852][ C2] 1 lock held by mausezahn/473:
[ 37.177089][ C2] #0: ffffc90000238ae8 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230
[ 37.177563][ C2]
[ 37.177563][ C2] stack backtrace:
[ 37.177834][ C2] CPU: 2 UID: 0 PID: 473 Comm: mausezahn Not tainted 6.13.0-virtme #1
[ 37.177839][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 37.177841][ C2] Call Trace:
[ 37.177843][ C2]
[ 37.177845][ C2] dump_stack_lvl+0xb0/0xd0
[ 37.177854][ C2] lockdep_rcu_suspicious+0x1ea/0x280
[ 37.177864][ C2] icmp6_send+0x10ab/0x1bf0
[ 37.177870][ C2] ? rcu_read_lock_any_held+0x43/0xb0
[ 37.177875][ C2] ? validate_chain+0x1fe/0xae0
[ 37.177880][ C2] ? __pfx_validate_chain+0x10/0x10
[ 37.177891][ C2] ? __pfx_icmp6_send+0x10/0x10
[ 37.177900][ C2] ? __pfx_validate_chain+0x10/0x10
[ 37.177904][ C2] ? hlock_class+0x4e/0x130
[ 37.177907][ C2] ? mark_lock+0x38/0x3e0
[ 37.177916][ C2] ? __lock_acquire+0xb9a/0x1680
[ 37.177922][ C2] ? find_held_lock+0x2c/0x110
[ 37.177929][ C2] ? __lock_release+0x103/0x460
[ 37.177932][ C2] ? neigh_invalidate+0x1c7/0x540
[ 37.177937][ C2] ? __pfx___lock_release+0x10/0x10
[ 37.177940][ C2] ? lock_acquire.part.0+0xeb/0x330
[ 37.177952][ C2] ip6_link_failure+0x30/0x430
[ 37.177959][ C2] ndisc_error_report+0x96/0x170
[ 37.177966][ C2] neigh_invalidate+0x209/0x540
[ 37.177975][ C2] neigh_timer_handler+0x87a/0xdf0
[ 37.177984][ C2] ? __pfx_neigh_timer_handler+0x10/0x10
[ 37.177988][ C2] call_timer_fn+0x13b/0x230
[ 37.177991][ C2] ? call_timer_fn+0xe8/0x230
[ 37.177994][ C2] ? call_timer_fn+0xe8/0x230
[ 37.177998][ C2] ? __pfx_call_timer_fn+0x10/0x10
[ 37.178000][ C2] ? mark_lock+0x38/0x3e0
[ 37.178018][ C2] __run_timers+0x545/0x810
[ 37.178021][ C2] ? __pfx_neigh_timer_handler+0x10/0x10
[ 37.178031][ C2] ? __pfx___run_timers+0x10/0x10
[ 37.178034][ C2] ? __lock_release+0x103/0x460
[ 37.178041][ C2] ? do_raw_spin_lock+0x131/0x270
[ 37.178047][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 37.178052][ C2] ? lock_acquire+0x32/0xc0
[ 37.178054][ C2] ? timer_expire_remote+0x96/0xf0
[ 37.178064][ C2] timer_expire_remote+0x9e/0xf0
[ 37.178068][ C2] tmigr_handle_remote_cpu+0x278/0x440
[ 37.178075][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10
[ 37.178078][ C2] ? __pfx___lock_release+0x10/0x10
[ 37.178082][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 37.178100][ C2] tmigr_handle_remote_up+0x1a6/0x270
[ 37.178106][ C2] ? __pfx_tmigr_handle_remote_up+0x10/0x10
[ 37.178111][ C2] __walk_groups.isra.0+0x44/0x160
[ 37.178120][ C2] tmigr_handle_remote+0x20b/0x300
[ 37.178124][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10
[ 37.178127][ C2] ? kvm_clock_get_cycles+0x18/0x30
[ 37.178131][ C2] ? ktime_get+0xb8/0x200
[ 37.178138][ C2] ? clockevents_program_event+0x1ea/0x300
[ 37.178151][ C2] handle_softirqs+0x1f6/0x5c0
[ 37.178162][ C2] __irq_exit_rcu+0xc4/0x100
[ 37.178166][ C2] irq_exit_rcu+0xe/0x20
[ 37.178168][ C2] sysvec_apic_timer_interrupt+0x78/0x90
[ 37.178172][ C2]
[ 37.178173][ C2]
[ 37.178176][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 37.178180][ C2] RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x70
[ 37.178184][ C2] Code: 10 e8 81 74 88 fd 48 89 ef e8 c9 e4 88 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 75 7d 50 71 <74> 0e 5b 5d c3 cc cc cc cc e8 8f 03 ae fd eb dc 0f 1f 44 00 00 5b
[ 37.178187][ C2] RSP: 0018:ffffc90000a17660 EFLAGS: 00000286
[ 37.178190][ C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff20b1991
[ 37.178192][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8eb34761
[ 37.178194][ C2] RBP: ffffffff8fd4c140 R08: 0000000000000001 R09: 0000000000000001
[ 37.178196][ C2] R10: ffffffff90591197 R11: ffff88800eb1c5c0 R12: ffff888002a8c580
[ 37.178197][ C2] R13: 00000000000000e0 R14: 0000000000000001 R15: 0000000000000282
[ 37.178209][ C2] ? _raw_spin_unlock_irqrestore+0x51/0x70
[ 37.178217][ C2] __create_object+0x5e/0xb0
[ 37.178227][ C2] kmem_cache_alloc_node_noprof+0x2b1/0x360
[ 37.178239][ C2] __alloc_skb+0x215/0x2e0
[ 37.178246][ C2] ? __pfx___alloc_skb+0x10/0x10
[ 37.178249][ C2] ? ipv6_dev_get_saddr+0x2b0/0xac0
[ 37.178253][ C2] ? __pfx___lock_release+0x10/0x10
[ 37.178266][ C2] alloc_skb_with_frags+0xbb/0x840
[ 37.178274][ C2] ? ipv6_dev_get_saddr+0x2ba/0xac0
[ 37.178282][ C2] sock_alloc_send_pskb+0x660/0x7f0
[ 37.178286][ C2] ? __pfx_validate_chain+0x10/0x10
[ 37.178300][ C2] ? __pfx_sock_alloc_send_pskb+0x10/0x10
[ 37.178310][ C2] ? __pfx_xfrm_lookup_with_ifid+0x10/0x10
[ 37.178318][ C2] ? find_held_lock+0x2c/0x110
[ 37.178325][ C2] rawv6_send_hdrinc+0x259/0x1470
[ 37.178337][ C2] ? __pfx_rawv6_send_hdrinc+0x10/0x10
[ 37.178343][ C2] ? ip6_dst_hoplimit.part.0.isra.0+0xd0/0x310
[ 37.178355][ C2] rawv6_sendmsg+0x8f7/0x1840
[ 37.178363][ C2] ? trace_raw_output_lock+0x8f/0xf0
[ 37.178371][ C2] ? __pfx_rawv6_sendmsg+0x10/0x10
[ 37.178377][ C2] ? __lock_acquire+0xb9a/0x1680
[ 37.178387][ C2] ? __pfx_validate_chain+0x10/0x10
[ 37.178395][ C2] ? find_held_lock+0x2c/0x110
[ 37.178401][ C2] ? __lock_release+0x103/0x460
[ 37.178404][ C2] ? __might_fault+0x11b/0x170
[ 37.178418][ C2] ? __might_fault+0xc3/0x170
[ 37.178423][ C2] ? __might_fault+0x11b/0x170
[ 37.178432][ C2] ? __sys_sendto+0x37a/0x450
[ 37.178437][ C2] __sys_sendto+0x37a/0x450
[ 37.178443][ C2] ? __pfx___sys_sendto+0x10/0x10
[ 37.178446][ C2] ? __pfx___lock_release+0x10/0x10
[ 37.178449][ C2] ? trace_lock_acquire+0x14c/0x1f0
[ 37.178461][ C2] ? rseq_update_cpu_node_id+0xe6/0x140
[ 37.178473][ C2] ? __pfx___rseq_handle_notify_resume+0x10/0x10
[ 37.178480][ C2] ? __pfx_task_work_run+0x10/0x10
[ 37.178493][ C2] __x64_sys_sendto+0xe0/0x1c0
[ 37.178497][ C2] ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 37.178502][ C2] do_syscall_64+0xc1/0x1d0
[ 37.178509][ C2] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 37.178512][ C2] RIP: 0033:0x7f71babcba4a
[ 37.178518][ C2] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
[ 37.178520][ C2] RSP: 002b:00007ffd24624048 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 37.178523][ C2] RAX: ffffffffffffffda RBX: 00000000037a59d0 RCX: 00007f71babcba4a
[ 37.178525][ C2] RDX: 0000000000000070 RSI: 00000000037a5c70 RDI: 0000000000000005
[ 37.178526][ C2] RBP: 00000000037a59d0 R08: 00007ffd24624050 R09: 000000000000001c
[ 37.178528][ C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000070
[ 37.178530][ C2] R13: 0000000000000032 R14: 0000000000000000 R15: 0000000000000000
[ 37.178545][ C2]