[ 40.096753][ T540] veth0: entered allmulticast mode [ 40.099049][ T540] veth1: entered allmulticast mode [ 40.099413][ T540] veth2: entered allmulticast mode [ 40.099731][ T540] veth3: entered allmulticast mode [ 51.862324][ T628] GACT probability NOT on [ 51.996240][ T630] [ 51.996589][ T630] ============================= [ 51.996766][ T630] WARNING: suspicious RCU usage [ 51.996925][ T630] 6.14.0-rc6-virtme #1 Not tainted [ 51.997077][ T630] ----------------------------- [ 51.997243][ T630] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 51.997525][ T630] [ 51.997525][ T630] other info that might help us debug this: [ 51.997525][ T630] [ 51.997815][ T630] [ 51.997815][ T630] rcu_scheduler_active = 2, debug_locks = 1 [ 51.998034][ T630] 1 lock held by mausezahn/630: [ 51.998202][ T630] #0: ffffffff84f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 51.998502][ T630] [ 51.998502][ T630] stack backtrace: [ 51.998692][ T630] CPU: 0 UID: 0 PID: 630 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 51.998697][ T630] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 51.998702][ T630] Call Trace: [ 51.998704][ T630] [ 51.998707][ T630] dump_stack_lvl+0xb0/0xd0 [ 51.998715][ T630] lockdep_rcu_suspicious+0x1ea/0x280 [ 51.998727][ T630] dev_hard_start_xmit+0x2fc/0x3f0 [ 51.998738][ T630] __dev_queue_xmit+0xfaf/0x18d0 [ 51.998752][ T630] ? __pfx___dev_queue_xmit+0x10/0x10 [ 51.998757][ T630] ? packet_parse_headers+0x231/0x9c0 [ 51.998766][ T630] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 51.998773][ T630] ? __pfx_packet_parse_headers+0x10/0x10 [ 51.998777][ T630] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 51.998783][ T630] ? dev_get_by_index+0xb2/0x190 [ 51.998795][ T630] packet_snd+0xd0c/0x19d0 [ 51.998807][ T630] ? __lock_release+0x103/0x460 [ 51.998811][ T630] ? __might_fault+0x11b/0x170 [ 51.998819][ T630] ? __pfx_packet_snd+0x10/0x10 [ 51.998821][ T630] ? trace_lock_acquire+0x14c/0x1f0 [ 51.998823][ T630] ? __might_fault+0x11b/0x170 [ 51.998830][ T630] ? lock_acquire+0x32/0xc0 [ 51.998837][ T630] ? __might_fault+0x11b/0x170 [ 51.998848][ T630] __sys_sendto+0x3c3/0x450 [ 51.998855][ T630] ? __pfx___sys_sendto+0x10/0x10 [ 51.998869][ T630] ? sock_ioctl+0x3b6/0x590 [ 51.998879][ T630] ? rseq_update_cpu_node_id+0xe6/0x140 [ 51.998888][ T630] ? __rseq_handle_notify_resume+0x288/0x3e0 [ 51.998895][ T630] ? __pfx___rseq_handle_notify_resume+0x10/0x10 [ 51.998905][ T630] __x64_sys_sendto+0xe0/0x1c0 [ 51.998909][ T630] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 51.998914][ T630] do_syscall_64+0xc1/0x1d0 [ 51.998923][ T630] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.998929][ T630] RIP: 0033:0x7fd73f187a4a [ 51.998934][ T630] 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 [ 51.998938][ T630] RSP: 002b:00007ffffe59e818 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 51.998942][ T630] RAX: ffffffffffffffda RBX: 000000002f1489d0 RCX: 00007fd73f187a4a [ 51.998944][ T630] RDX: 000000000000002a RSI: 000000002f148c92 RDI: 0000000000000005 [ 51.998946][ T630] RBP: 000000002f148c92 R08: 00007ffffe59e820 R09: 0000000000000014 [ 51.998948][ T630] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 51.998949][ T630] R13: 000000000000002a R14: 00007ffffe59e820 R15: 0000000000000000 [ 51.998966][ T630] [ 59.576335][ T540] veth0: left allmulticast mode [ 59.576676][ T540] veth1: left allmulticast mode [ 59.576909][ T540] veth2: left allmulticast mode [ 59.577145][ T540] veth3: left allmulticast mode