[ 16.815182][ T369] br: port 1(veth1) entered blocking state [ 16.815896][ T369] br: port 1(veth1) entered disabled state [ 16.816281][ T369] veth1: entered allmulticast mode [ 16.819456][ T369] veth1: entered promiscuous mode [ 16.822391][ T46] br: port 1(veth1) entered blocking state [ 16.822792][ T46] br: port 1(veth1) entered forwarding state [ 16.935703][ T374] br: port 2(veth3) entered blocking state [ 16.936039][ T374] br: port 2(veth3) entered disabled state [ 16.936330][ T374] veth3: entered allmulticast mode [ 16.938703][ T374] veth3: entered promiscuous mode [ 16.940418][ T40] br: port 2(veth3) entered blocking state [ 16.940698][ T40] br: port 2(veth3) entered forwarding state [ 17.064000][ T379] br: port 3(veth4) entered blocking state [ 17.064535][ T379] br: port 3(veth4) entered disabled state [ 17.064958][ T379] veth4: entered allmulticast mode [ 17.068267][ T379] veth4: entered promiscuous mode [ 17.070169][ T46] br: port 3(veth4) entered blocking state [ 17.070441][ T46] br: port 3(veth4) entered forwarding state [ 28.352955][ T467] [ 28.353264][ T467] ============================= [ 28.353695][ T467] WARNING: suspicious RCU usage [ 28.353853][ T467] 6.14.0-rc6-virtme #1 Not tainted [ 28.354016][ T467] ----------------------------- [ 28.354194][ T467] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 28.354468][ T467] [ 28.354468][ T467] other info that might help us debug this: [ 28.354468][ T467] [ 28.354805][ T467] [ 28.354805][ T467] rcu_scheduler_active = 2, debug_locks = 1 [ 28.355042][ T467] 1 lock held by mausezahn/467: [ 28.355213][ T467] #0: ffffffff8995b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 28.355510][ T467] [ 28.355510][ T467] stack backtrace: [ 28.355702][ T467] CPU: 0 UID: 0 PID: 467 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 28.355706][ T467] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.355708][ T467] Call Trace: [ 28.355711][ T467] [ 28.355713][ T467] dump_stack_lvl+0xb0/0xd0 [ 28.355722][ T467] lockdep_rcu_suspicious+0x1ea/0x280 [ 28.355734][ T467] dev_hard_start_xmit+0x2fc/0x3f0 [ 28.355744][ T467] sch_direct_xmit+0x1e0/0xa60 [ 28.355756][ T467] ? __pfx_sch_direct_xmit+0x10/0x10 [ 28.355772][ T467] __qdisc_run+0x1b9/0x3b0 [ 28.355777][ T467] ? __lock_acquire+0xb9a/0x1680 [ 28.355782][ T467] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 28.355787][ T467] ? __pfx___qdisc_run+0x10/0x10 [ 28.355796][ T467] ? tbf_enqueue+0x21e/0x7b0 [sch_tbf] [ 28.355803][ T467] ? lock_acquire+0x32/0xc0 [ 28.355806][ T467] ? __dev_xmit_skb+0x301/0x10b0 [ 28.355820][ T467] __dev_xmit_skb+0x4a5/0x10b0 [ 28.355825][ T467] ? lock_sync+0xd0/0x180 [ 28.355831][ T467] ? __pfx___dev_xmit_skb+0x10/0x10 [ 28.355838][ T467] ? lock_acquire+0x32/0xc0 [ 28.355841][ T467] ? __dev_queue_xmit+0x1f0/0x18d0 [ 28.355849][ T467] __dev_queue_xmit+0x784/0x18d0 [ 28.355863][ T467] ? __pfx___dev_queue_xmit+0x10/0x10 [ 28.355867][ T467] ? packet_parse_headers+0x231/0x9c0 [ 28.355877][ T467] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 28.355883][ T467] ? __pfx_packet_parse_headers+0x10/0x10 [ 28.355888][ T467] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 28.355894][ T467] ? dev_get_by_index+0xb2/0x190 [ 28.355905][ T467] packet_snd+0xd0c/0x19d0 [ 28.355916][ T467] ? __lock_release+0x103/0x460 [ 28.355919][ T467] ? __might_fault+0x11b/0x170 [ 28.355927][ T467] ? __pfx_packet_snd+0x10/0x10 [ 28.355929][ T467] ? trace_lock_acquire+0x14c/0x1f0 [ 28.355931][ T467] ? __might_fault+0x11b/0x170 [ 28.355938][ T467] ? lock_acquire+0x32/0xc0 [ 28.355945][ T467] ? __might_fault+0x11b/0x170 [ 28.355956][ T467] __sys_sendto+0x3c3/0x450 [ 28.355961][ T467] ? __pfx___sys_sendto+0x10/0x10 [ 28.355976][ T467] ? sock_ioctl+0x3b6/0x590 [ 28.355986][ T467] ? __pfx___up_read+0x10/0x10 [ 28.355995][ T467] ? do_user_addr_fault+0x374/0xe30 [ 28.356006][ T467] ? do_user_addr_fault+0x374/0xe30 [ 28.356013][ T467] __x64_sys_sendto+0xe0/0x1c0 [ 28.356017][ T467] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 28.356024][ T467] do_syscall_64+0xc1/0x1d0 [ 28.356033][ T467] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 28.356039][ T467] RIP: 0033:0x7f6acb8d7a4a [ 28.356043][ T467] 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 [ 28.356046][ T467] RSP: 002b:00007ffcb4beefd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 28.356050][ T467] RAX: ffffffffffffffda RBX: 000000002d7e29d0 RCX: 00007f6acb8d7a4a [ 28.356052][ T467] RDX: 00000000000005ae RSI: 000000002d7e3252 RDI: 0000000000000005 [ 28.356054][ T467] RBP: 000000002d7e3252 R08: 00007ffcb4beefe0 R09: 0000000000000014 [ 28.356056][ T467] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 28.356058][ T467] R13: 00000000000005ae R14: 00007ffcb4beefe0 R15: 0000000000000000 [ 28.356074][ T467] [ 111.722853][ T810] Mirror/redirect action on [ 149.084115][ T991] br: port 3(veth4) entered disabled state [ 149.085975][ T991] veth4: left allmulticast mode [ 149.086394][ T991] veth4: left promiscuous mode [ 149.086751][ T991] br: port 3(veth4) entered disabled state [ 149.198580][ T993] br: port 2(veth3) entered disabled state [ 149.199450][ T993] veth3: left allmulticast mode [ 149.199663][ T993] veth3: left promiscuous mode [ 149.199972][ T993] br: port 2(veth3) entered disabled state [ 149.290638][ T995] br: port 1(veth1) entered disabled state [ 149.291569][ T995] veth1: left allmulticast mode [ 149.291832][ T995] veth1: left promiscuous mode [ 149.292235][ T995] br: port 1(veth1) entered disabled state [ 149.450503][ T997] ip (997) used greatest stack depth: 23968 bytes left