[ 13.845370][ T307] 8021q: 802.1Q VLAN Support v1.8 [ 15.002269][ T330] ip (330) used greatest stack depth: 24176 bytes left [ 19.385985][ T437] br10: port 1(veth1.10) entered blocking state [ 19.386499][ T437] br10: port 1(veth1.10) entered disabled state [ 19.386905][ T437] veth1.10: entered allmulticast mode [ 19.387113][ T437] veth1: entered allmulticast mode [ 19.389671][ T437] veth1.10: entered promiscuous mode [ 19.389928][ T437] veth1: entered promiscuous mode [ 19.529071][ T442] br10: port 2(veth2.10) entered blocking state [ 19.529594][ T442] br10: port 2(veth2.10) entered disabled state [ 19.529975][ T442] veth2.10: entered allmulticast mode [ 19.530402][ T442] veth2: entered allmulticast mode [ 19.534180][ T442] veth2.10: entered promiscuous mode [ 19.534488][ T442] veth2: entered promiscuous mode [ 19.689369][ T447] br10: port 2(veth2.10) entered blocking state [ 19.690026][ T447] br10: port 2(veth2.10) entered forwarding state [ 19.691213][ T447] br10: port 1(veth1.10) entered blocking state [ 19.691498][ T447] br10: port 1(veth1.10) entered forwarding state [ 20.789331][ T482] br11: port 1(veth1.11) entered blocking state [ 20.789694][ T482] br11: port 1(veth1.11) entered disabled state [ 20.789988][ T482] veth1.11: entered allmulticast mode [ 20.792601][ T482] veth1.11: entered promiscuous mode [ 20.959805][ T488] br11: port 2(veth2.11) entered blocking state [ 20.960577][ T488] br11: port 2(veth2.11) entered disabled state [ 20.960886][ T488] veth2.11: entered allmulticast mode [ 20.963118][ T488] veth2.11: entered promiscuous mode [ 21.072548][ T493] br11: port 2(veth2.11) entered blocking state [ 21.072908][ T493] br11: port 2(veth2.11) entered forwarding state [ 21.073443][ T493] br11: port 1(veth1.11) entered blocking state [ 21.073717][ T493] br11: port 1(veth1.11) entered forwarding state [ 22.142076][ T529] br12: port 1(veth1.12) entered blocking state [ 22.142392][ T529] br12: port 1(veth1.12) entered disabled state [ 22.142665][ T529] veth1.12: entered allmulticast mode [ 22.144566][ T529] veth1.12: entered promiscuous mode [ 22.292976][ T534] br12: port 2(veth2.12) entered blocking state [ 22.293282][ T534] br12: port 2(veth2.12) entered disabled state [ 22.293559][ T534] veth2.12: entered allmulticast mode [ 22.295598][ T534] veth2.12: entered promiscuous mode [ 22.433430][ T539] br12: port 2(veth2.12) entered blocking state [ 22.433740][ T539] br12: port 2(veth2.12) entered forwarding state [ 22.434586][ T539] br12: port 1(veth1.12) entered blocking state [ 22.434850][ T539] br12: port 1(veth1.12) entered forwarding state [ 33.428181][ T631] [ 33.428471][ T631] ============================= [ 33.428650][ T631] WARNING: suspicious RCU usage [ 33.428831][ T631] 6.14.0-rc6-virtme #1 Not tainted [ 33.429026][ T631] ----------------------------- [ 33.429220][ T631] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 33.429522][ T631] [ 33.429522][ T631] other info that might help us debug this: [ 33.429522][ T631] [ 33.429837][ T631] [ 33.429837][ T631] rcu_scheduler_active = 2, debug_locks = 1 [ 33.430080][ T631] 1 lock held by mausezahn/631: [ 33.430297][ T631] #0: ffffffff8975b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 33.430609][ T631] [ 33.430609][ T631] stack backtrace: [ 33.430817][ T631] CPU: 3 UID: 0 PID: 631 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 33.430821][ T631] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 33.430824][ T631] Call Trace: [ 33.430826][ T631] [ 33.430828][ T631] dump_stack_lvl+0xb0/0xd0 [ 33.430837][ T631] lockdep_rcu_suspicious+0x1ea/0x280 [ 33.430849][ T631] dev_hard_start_xmit+0x2fc/0x3f0 [ 33.430860][ T631] __dev_queue_xmit+0xfaf/0x18d0 [ 33.430865][ T631] ? __pfx__copy_from_iter+0x10/0x10 [ 33.430875][ T631] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 33.430887][ T631] ? __pfx___dev_queue_xmit+0x10/0x10 [ 33.430892][ T631] ? packet_parse_headers+0x231/0x9c0 [ 33.430901][ T631] ? copy_page_from_iter+0xbd/0x120 [ 33.430906][ T631] ? __pfx_packet_parse_headers+0x10/0x10 [ 33.430911][ T631] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 33.430926][ T631] packet_snd+0xd0c/0x19d0 [ 33.430937][ T631] ? __lock_release+0x103/0x460 [ 33.430941][ T631] ? __might_fault+0x11b/0x170 [ 33.430949][ T631] ? __pfx_packet_snd+0x10/0x10 [ 33.430952][ T631] ? trace_lock_acquire+0x14c/0x1f0 [ 33.430954][ T631] ? __might_fault+0x11b/0x170 [ 33.430961][ T631] ? lock_acquire+0x32/0xc0 [ 33.430968][ T631] ? __might_fault+0x11b/0x170 [ 33.430979][ T631] __sys_sendto+0x3c3/0x450 [ 33.430986][ T631] ? __pfx___sys_sendto+0x10/0x10 [ 33.431000][ T631] ? sock_ioctl+0x3b6/0x590 [ 33.431004][ T631] ? __pfx___lock_release+0x10/0x10 [ 33.431012][ T631] ? __pfx___up_read+0x10/0x10 [ 33.431021][ T631] ? do_user_addr_fault+0x972/0xe30 [ 33.431030][ T631] ? do_user_addr_fault+0x97c/0xe30 [ 33.431037][ T631] __x64_sys_sendto+0xe0/0x1c0 [ 33.431041][ T631] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 33.431046][ T631] do_syscall_64+0xc1/0x1d0 [ 33.431055][ T631] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 33.431061][ T631] RIP: 0033:0x7f5f23772a4a [ 33.431065][ T631] 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 [ 33.431068][ T631] RSP: 002b:00007ffcabd56e68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 33.431071][ T631] RAX: ffffffffffffffda RBX: 000000001ab2f9d0 RCX: 00007f5f23772a4a [ 33.431073][ T631] RDX: 0000000000001f6a RSI: 000000001ab328e2 RDI: 0000000000000005 [ 33.431075][ T631] RBP: 000000001ab328e2 R08: 00007ffcabd56e70 R09: 0000000000000014 [ 33.431077][ T631] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 33.431079][ T631] R13: 0000000000001f6a R14: 00007ffcabd56e70 R15: 0000000000000000 [ 33.431097][ T631] [ 438.421311][ T1970] br12: port 2(veth2.12) entered disabled state [ 438.521939][ T1972] br12: port 1(veth1.12) entered disabled state [ 438.735484][ T1976] veth2.12: left allmulticast mode [ 438.735762][ T1976] veth2.12: left promiscuous mode [ 438.736330][ T1976] br12: port 2(veth2.12) entered disabled state [ 438.842932][ T1978] veth1.12: left allmulticast mode [ 438.844023][ T1978] veth1.12: left promiscuous mode [ 438.844829][ T1978] br12: port 1(veth1.12) entered disabled state [ 439.420543][ T1988] br11: port 2(veth2.11) entered disabled state [ 439.528959][ T1990] br11: port 1(veth1.11) entered disabled state [ 439.715933][ T1994] veth2.11: left allmulticast mode [ 439.716218][ T1994] veth2.11: left promiscuous mode [ 439.716730][ T1994] br11: port 2(veth2.11) entered disabled state [ 439.826874][ T1996] veth1.11: left allmulticast mode [ 439.827431][ T1996] veth1.11: left promiscuous mode [ 439.827947][ T1996] br11: port 1(veth1.11) entered disabled state [ 440.320348][ T2004] br10: port 2(veth2.10) entered disabled state [ 440.415547][ T2006] br10: port 1(veth1.10) entered disabled state [ 440.619178][ T2010] veth2.10: left allmulticast mode [ 440.619434][ T2010] veth2: left allmulticast mode [ 440.619653][ T2010] veth2.10: left promiscuous mode [ 440.619921][ T2010] veth2: left promiscuous mode [ 440.620441][ T2010] br10: port 2(veth2.10) entered disabled state [ 440.717239][ T2012] veth1.10: left allmulticast mode [ 440.717483][ T2012] veth1: left allmulticast mode [ 440.717696][ T2012] veth1.10: left promiscuous mode [ 440.718141][ T2012] veth1: left promiscuous mode [ 440.718655][ T2012] br10: port 1(veth1.10) entered disabled state