[ 10.682463][ T251] ip (251) used greatest stack depth: 23744 bytes left [ 16.052733][ T368] br: port 1(veth1) entered blocking state [ 16.054068][ T368] br: port 1(veth1) entered disabled state [ 16.054463][ T368] veth1: entered allmulticast mode [ 16.056513][ T368] veth1: entered promiscuous mode [ 16.058835][ T38] br: port 1(veth1) entered blocking state [ 16.059198][ T38] br: port 1(veth1) entered forwarding state [ 16.174260][ T373] br: port 2(veth3) entered blocking state [ 16.174612][ T373] br: port 2(veth3) entered disabled state [ 16.174868][ T373] veth3: entered allmulticast mode [ 16.177900][ T373] veth3: entered promiscuous mode [ 16.179420][ T38] br: port 2(veth3) entered blocking state [ 16.179722][ T38] br: port 2(veth3) entered forwarding state [ 16.294573][ T378] br: port 3(veth4) entered blocking state [ 16.294996][ T378] br: port 3(veth4) entered disabled state [ 16.296370][ T378] veth4: entered allmulticast mode [ 16.298290][ T378] veth4: entered promiscuous mode [ 16.299957][ T70] br: port 3(veth4) entered blocking state [ 16.300246][ T70] br: port 3(veth4) entered forwarding state [ 27.370141][ T466] [ 27.370451][ T466] ============================= [ 27.370630][ T466] WARNING: suspicious RCU usage [ 27.371092][ T466] 6.14.0-rc6-virtme #1 Not tainted [ 27.371314][ T466] ----------------------------- [ 27.371539][ T466] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 27.371819][ T466] [ 27.371819][ T466] other info that might help us debug this: [ 27.371819][ T466] [ 27.372236][ T466] [ 27.372236][ T466] rcu_scheduler_active = 2, debug_locks = 1 [ 27.372481][ T466] 1 lock held by mausezahn/466: [ 27.372655][ T466] #0: ffffffffaf75b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 27.373057][ T466] [ 27.373057][ T466] stack backtrace: [ 27.373279][ T466] CPU: 2 UID: 0 PID: 466 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 27.373284][ T466] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.373286][ T466] Call Trace: [ 27.373288][ T466] [ 27.373291][ T466] dump_stack_lvl+0xb0/0xd0 [ 27.373300][ T466] lockdep_rcu_suspicious+0x1ea/0x280 [ 27.373313][ T466] dev_hard_start_xmit+0x2fc/0x3f0 [ 27.373324][ T466] sch_direct_xmit+0x1e0/0xa60 [ 27.373335][ T466] ? __pfx_sch_direct_xmit+0x10/0x10 [ 27.373351][ T466] __qdisc_run+0x1b9/0x3b0 [ 27.373356][ T466] ? __lock_acquire+0xb9a/0x1680 [ 27.373361][ T466] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 27.373367][ T466] ? __pfx___qdisc_run+0x10/0x10 [ 27.373374][ T466] ? tbf_enqueue+0x21e/0x7b0 [sch_tbf] [ 27.373381][ T466] ? lock_acquire+0x32/0xc0 [ 27.373384][ T466] ? __dev_xmit_skb+0x301/0x10b0 [ 27.373397][ T466] __dev_xmit_skb+0x4a5/0x10b0 [ 27.373401][ T466] ? lock_sync+0xd0/0x180 [ 27.373408][ T466] ? __pfx___dev_xmit_skb+0x10/0x10 [ 27.373415][ T466] ? lock_acquire+0x32/0xc0 [ 27.373418][ T466] ? __dev_queue_xmit+0x1f0/0x18d0 [ 27.373426][ T466] __dev_queue_xmit+0x784/0x18d0 [ 27.373440][ T466] ? __pfx___dev_queue_xmit+0x10/0x10 [ 27.373444][ T466] ? packet_parse_headers+0x231/0x9c0 [ 27.373454][ T466] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 27.373460][ T466] ? __pfx_packet_parse_headers+0x10/0x10 [ 27.373465][ T466] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 27.373471][ T466] ? dev_get_by_index+0xb2/0x190 [ 27.373481][ T466] packet_snd+0xd0c/0x19d0 [ 27.373492][ T466] ? __lock_release+0x103/0x460 [ 27.373495][ T466] ? __might_fault+0x11b/0x170 [ 27.373502][ T466] ? __pfx_packet_snd+0x10/0x10 [ 27.373505][ T466] ? trace_lock_acquire+0x14c/0x1f0 [ 27.373507][ T466] ? __might_fault+0x11b/0x170 [ 27.373514][ T466] ? lock_acquire+0x32/0xc0 [ 27.373520][ T466] ? __might_fault+0x11b/0x170 [ 27.373531][ T466] __sys_sendto+0x3c3/0x450 [ 27.373537][ T466] ? __pfx___sys_sendto+0x10/0x10 [ 27.373551][ T466] ? sock_ioctl+0x3b6/0x590 [ 27.373561][ T466] ? __pfx___up_read+0x10/0x10 [ 27.373571][ T466] ? do_user_addr_fault+0x374/0xe30 [ 27.373582][ T466] ? do_user_addr_fault+0x374/0xe30 [ 27.373589][ T466] __x64_sys_sendto+0xe0/0x1c0 [ 27.373593][ T466] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 27.373598][ T466] do_syscall_64+0xc1/0x1d0 [ 27.373607][ T466] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 27.373613][ T466] RIP: 0033:0x7f6065151a4a [ 27.373618][ T466] 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 [ 27.373621][ T466] RSP: 002b:00007ffc17d4d148 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 27.373625][ T466] RAX: ffffffffffffffda RBX: 000000002a1d99d0 RCX: 00007f6065151a4a [ 27.373628][ T466] RDX: 00000000000005ae RSI: 000000002a1da252 RDI: 0000000000000005 [ 27.373630][ T466] RBP: 000000002a1da252 R08: 00007ffc17d4d150 R09: 0000000000000014 [ 27.373632][ T466] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 27.373633][ T466] R13: 00000000000005ae R14: 00007ffc17d4d150 R15: 0000000000000000 [ 27.373649][ T466] [ 109.665949][ T809] Mirror/redirect action on [ 145.097077][ T985] br: port 3(veth4) entered disabled state [ 145.099817][ T985] veth4: left allmulticast mode [ 145.100080][ T985] veth4: left promiscuous mode [ 145.100418][ T985] br: port 3(veth4) entered disabled state [ 145.220691][ T987] br: port 2(veth3) entered disabled state [ 145.221598][ T987] veth3: left allmulticast mode [ 145.221837][ T987] veth3: left promiscuous mode [ 145.222771][ T987] br: port 2(veth3) entered disabled state [ 145.318336][ T989] br: port 1(veth1) entered disabled state [ 145.319173][ T989] veth1: left allmulticast mode [ 145.319382][ T989] veth1: left promiscuous mode [ 145.319686][ T989] br: port 1(veth1) entered disabled state