[ 11.660512][ T280] veth0: entered allmulticast mode [ 11.661268][ T280] veth1: entered allmulticast mode [ 11.661589][ T280] veth2: entered allmulticast mode [ 11.661900][ T280] veth3: entered allmulticast mode [ 23.149818][ T368] GACT probability NOT on [ 23.288151][ T370] [ 23.288416][ T370] ============================= [ 23.288588][ T370] WARNING: suspicious RCU usage [ 23.288756][ T370] 6.14.0-rc6-virtme #1 Not tainted [ 23.289150][ T370] ----------------------------- [ 23.289323][ T370] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.289600][ T370] [ 23.289600][ T370] other info that might help us debug this: [ 23.289600][ T370] [ 23.289905][ T370] [ 23.289905][ T370] rcu_scheduler_active = 2, debug_locks = 1 [ 23.290154][ T370] 1 lock held by mausezahn/370: [ 23.290326][ T370] #0: ffffffff97f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.290630][ T370] [ 23.290630][ T370] stack backtrace: [ 23.290827][ T370] CPU: 2 UID: 0 PID: 370 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.290832][ T370] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.290834][ T370] Call Trace: [ 23.290836][ T370] [ 23.290838][ T370] dump_stack_lvl+0xb0/0xd0 [ 23.290850][ T370] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.290865][ T370] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.290882][ T370] __dev_queue_xmit+0xfaf/0x18d0 [ 23.290899][ T370] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.290903][ T370] ? packet_parse_headers+0x231/0x9c0 [ 23.290915][ T370] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.290921][ T370] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.290925][ T370] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.290931][ T370] ? dev_get_by_index+0xb2/0x190 [ 23.290942][ T370] packet_snd+0xd0c/0x19d0 [ 23.290954][ T370] ? __lock_release+0x103/0x460 [ 23.290957][ T370] ? __might_fault+0x11b/0x170 [ 23.290964][ T370] ? __pfx_packet_snd+0x10/0x10 [ 23.290966][ T370] ? trace_lock_acquire+0x14c/0x1f0 [ 23.290969][ T370] ? __might_fault+0x11b/0x170 [ 23.290976][ T370] ? lock_acquire+0x32/0xc0 [ 23.290982][ T370] ? __might_fault+0x11b/0x170 [ 23.290993][ T370] __sys_sendto+0x3c3/0x450 [ 23.290999][ T370] ? __pfx___sys_sendto+0x10/0x10 [ 23.291013][ T370] ? sock_ioctl+0x3b6/0x590 [ 23.291023][ T370] ? __pfx___up_read+0x10/0x10 [ 23.291031][ T370] ? do_user_addr_fault+0x374/0xe30 [ 23.291041][ T370] ? do_user_addr_fault+0x374/0xe30 [ 23.291048][ T370] __x64_sys_sendto+0xe0/0x1c0 [ 23.291052][ T370] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.291057][ T370] do_syscall_64+0xc1/0x1d0 [ 23.291068][ T370] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.291073][ T370] RIP: 0033:0x7f2206bbba4a [ 23.291079][ T370] 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 [ 23.291082][ T370] RSP: 002b:00007ffe14153f88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.291089][ T370] RAX: ffffffffffffffda RBX: 000000002abf49d0 RCX: 00007f2206bbba4a [ 23.291091][ T370] RDX: 000000000000002a RSI: 000000002abf4c92 RDI: 0000000000000005 [ 23.291093][ T370] RBP: 000000002abf4c92 R08: 00007ffe14153f90 R09: 0000000000000014 [ 23.291097][ T370] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.291098][ T370] R13: 000000000000002a R14: 00007ffe14153f90 R15: 0000000000000000 [ 23.291114][ T370] [ 30.038853][ T280] veth0: left allmulticast mode [ 30.039344][ T280] veth1: left allmulticast mode [ 30.039718][ T280] veth2: left allmulticast mode [ 30.040092][ T280] veth3: left allmulticast mode