[ 49.191570][ T306] 8021q: 802.1Q VLAN Support v1.8 [ 55.059608][ T435] br10: port 1(veth1.10) entered blocking state [ 55.060119][ T435] br10: port 1(veth1.10) entered disabled state [ 55.060623][ T435] veth1.10: entered allmulticast mode [ 55.060836][ T435] veth1: entered allmulticast mode [ 55.062904][ T435] veth1.10: entered promiscuous mode [ 55.063133][ T435] veth1: entered promiscuous mode [ 55.211718][ T440] br10: port 2(veth2.10) entered blocking state [ 55.212023][ T440] br10: port 2(veth2.10) entered disabled state [ 55.213828][ T440] veth2.10: entered allmulticast mode [ 55.214044][ T440] veth2: entered allmulticast mode [ 55.216223][ T440] veth2.10: entered promiscuous mode [ 55.216459][ T440] veth2: entered promiscuous mode [ 55.348668][ T445] br10: port 2(veth2.10) entered blocking state [ 55.349262][ T445] br10: port 2(veth2.10) entered forwarding state [ 55.350088][ T445] br10: port 1(veth1.10) entered blocking state [ 55.350350][ T445] br10: port 1(veth1.10) entered forwarding state [ 56.489332][ T481] br11: port 1(veth1.11) entered blocking state [ 56.489795][ T481] br11: port 1(veth1.11) entered disabled state [ 56.490222][ T481] veth1.11: entered allmulticast mode [ 56.495026][ T481] veth1.11: entered promiscuous mode [ 56.651964][ T486] br11: port 2(veth2.11) entered blocking state [ 56.652257][ T486] br11: port 2(veth2.11) entered disabled state [ 56.652547][ T486] veth2.11: entered allmulticast mode [ 56.654523][ T486] veth2.11: entered promiscuous mode [ 56.760638][ T491] br11: port 2(veth2.11) entered blocking state [ 56.761005][ T491] br11: port 2(veth2.11) entered forwarding state [ 56.761521][ T491] br11: port 1(veth1.11) entered blocking state [ 56.761811][ T491] br11: port 1(veth1.11) entered forwarding state [ 57.844830][ T527] br12: port 1(veth1.12) entered blocking state [ 57.845277][ T527] br12: port 1(veth1.12) entered disabled state [ 57.845726][ T527] veth1.12: entered allmulticast mode [ 57.850048][ T527] veth1.12: entered promiscuous mode [ 57.991892][ T532] br12: port 2(veth2.12) entered blocking state [ 57.992349][ T532] br12: port 2(veth2.12) entered disabled state [ 57.992839][ T532] veth2.12: entered allmulticast mode [ 57.996210][ T532] veth2.12: entered promiscuous mode [ 58.135448][ T537] br12: port 2(veth2.12) entered blocking state [ 58.135805][ T537] br12: port 2(veth2.12) entered forwarding state [ 58.136284][ T537] br12: port 1(veth1.12) entered blocking state [ 58.136598][ T537] br12: port 1(veth1.12) entered forwarding state [ 69.104504][ T628] [ 69.104765][ T628] ============================= [ 69.104980][ T628] WARNING: suspicious RCU usage [ 69.105227][ T628] 6.14.0-rc6-virtme #1 Not tainted [ 69.105506][ T628] ----------------------------- [ 69.105751][ T628] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 69.106169][ T628] [ 69.106169][ T628] other info that might help us debug this: [ 69.106169][ T628] [ 69.106710][ T628] [ 69.106710][ T628] rcu_scheduler_active = 2, debug_locks = 1 [ 69.107076][ T628] 1 lock held by mausezahn/628: [ 69.107322][ T628] #0: ffffffff8f55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 69.107799][ T628] [ 69.107799][ T628] stack backtrace: [ 69.108091][ T628] CPU: 3 UID: 0 PID: 628 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 69.108098][ T628] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 69.108101][ T628] Call Trace: [ 69.108104][ T628] [ 69.108108][ T628] dump_stack_lvl+0xb0/0xd0 [ 69.108119][ T628] lockdep_rcu_suspicious+0x1ea/0x280 [ 69.108136][ T628] dev_hard_start_xmit+0x2fc/0x3f0 [ 69.108156][ T628] __dev_queue_xmit+0xfaf/0x18d0 [ 69.108165][ T628] ? __pfx__copy_from_iter+0x10/0x10 [ 69.108178][ T628] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 69.108201][ T628] ? __pfx___dev_queue_xmit+0x10/0x10 [ 69.108207][ T628] ? packet_parse_headers+0x231/0x9c0 [ 69.108222][ T628] ? copy_page_from_iter+0xbd/0x120 [ 69.108231][ T628] ? __pfx_packet_parse_headers+0x10/0x10 [ 69.108240][ T628] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 69.108264][ T628] packet_snd+0xd0c/0x19d0 [ 69.108287][ T628] ? __lock_release+0x103/0x460 [ 69.108292][ T628] ? __might_fault+0x11b/0x170 [ 69.108302][ T628] ? __pfx_packet_snd+0x10/0x10 [ 69.108305][ T628] ? trace_lock_acquire+0x14c/0x1f0 [ 69.108310][ T628] ? __might_fault+0x11b/0x170 [ 69.108322][ T628] ? lock_acquire+0x32/0xc0 [ 69.108332][ T628] ? __might_fault+0x11b/0x170 [ 69.108351][ T628] __sys_sendto+0x3c3/0x450 [ 69.108361][ T628] ? __pfx___sys_sendto+0x10/0x10 [ 69.108390][ T628] ? sock_ioctl+0x3b6/0x590 [ 69.108395][ T628] ? __pfx___lock_release+0x10/0x10 [ 69.108409][ T628] ? __pfx___up_read+0x10/0x10 [ 69.108428][ T628] ? do_user_addr_fault+0x972/0xe30 [ 69.108443][ T628] ? do_user_addr_fault+0x97c/0xe30 [ 69.108457][ T628] __x64_sys_sendto+0xe0/0x1c0 [ 69.108464][ T628] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 69.108474][ T628] do_syscall_64+0xc1/0x1d0 [ 69.108486][ T628] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.108493][ T628] RIP: 0033:0x7efe1b550a4a [ 69.108499][ T628] 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 [ 69.108503][ T628] RSP: 002b:00007ffc949d9808 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 69.108508][ T628] RAX: ffffffffffffffda RBX: 00000000086519d0 RCX: 00007efe1b550a4a [ 69.108511][ T628] RDX: 0000000000001f6a RSI: 00000000086548e2 RDI: 0000000000000005 [ 69.108514][ T628] RBP: 00000000086548e2 R08: 00007ffc949d9810 R09: 0000000000000014 [ 69.108516][ T628] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.108519][ T628] R13: 0000000000001f6a R14: 00007ffc949d9810 R15: 0000000000000000 [ 69.108550][ T628] [ 473.696305][ T1969] br12: port 2(veth2.12) entered disabled state [ 473.704342][ T1969] ip (1969) used greatest stack depth: 23368 bytes left [ 473.801706][ T1971] br12: port 1(veth1.12) entered disabled state [ 474.012568][ T1975] veth2.12: left allmulticast mode [ 474.012848][ T1975] veth2.12: left promiscuous mode [ 474.013454][ T1975] br12: port 2(veth2.12) entered disabled state [ 474.129483][ T1977] veth1.12: left allmulticast mode [ 474.129847][ T1977] veth1.12: left promiscuous mode [ 474.130390][ T1977] br12: port 1(veth1.12) entered disabled state [ 474.698247][ T1987] br11: port 2(veth2.11) entered disabled state [ 474.777819][ T1989] br11: port 1(veth1.11) entered disabled state [ 474.981037][ T1993] veth2.11: left allmulticast mode [ 474.981300][ T1993] veth2.11: left promiscuous mode [ 474.982649][ T1993] br11: port 2(veth2.11) entered disabled state [ 475.079996][ T1995] veth1.11: left allmulticast mode [ 475.080241][ T1995] veth1.11: left promiscuous mode [ 475.080775][ T1995] br11: port 1(veth1.11) entered disabled state [ 475.650509][ T2003] br10: port 2(veth2.10) entered disabled state [ 475.778793][ T2005] br10: port 1(veth1.10) entered disabled state [ 475.972361][ T2009] veth2.10: left allmulticast mode [ 475.973635][ T2009] veth2: left allmulticast mode [ 475.973864][ T2009] veth2.10: left promiscuous mode [ 475.974057][ T2009] veth2: left promiscuous mode [ 475.974571][ T2009] br10: port 2(veth2.10) entered disabled state [ 476.091408][ T2011] veth1.10: left allmulticast mode [ 476.091699][ T2011] veth1: left allmulticast mode [ 476.091912][ T2011] veth1.10: left promiscuous mode [ 476.092105][ T2011] veth1: left promiscuous mode [ 476.092649][ T2011] br10: port 1(veth1.10) entered disabled state