[ 11.288774][ T251] ip (251) used greatest stack depth: 24088 bytes left [ 13.685529][ T308] 8021q: 802.1Q VLAN Support v1.8 [ 16.936981][ T378] GACT probability NOT on [ 16.963428][ T376] tc (376) used greatest stack depth: 23640 bytes left [ 18.268821][ T415] br10: port 1(veth1.10) entered blocking state [ 18.269429][ T415] br10: port 1(veth1.10) entered disabled state [ 18.269844][ T415] veth1.10: entered allmulticast mode [ 18.270031][ T415] veth1: entered allmulticast mode [ 18.272140][ T415] veth1.10: entered promiscuous mode [ 18.272340][ T415] veth1: entered promiscuous mode [ 18.737806][ T432] br11: port 1(veth1.11) entered blocking state [ 18.738123][ T432] br11: port 1(veth1.11) entered disabled state [ 18.738405][ T432] veth1.11: entered allmulticast mode [ 18.740338][ T432] veth1.11: entered promiscuous mode [ 19.687132][ T462] br10: port 2(veth2.10) entered blocking state [ 19.687848][ T462] br10: port 2(veth2.10) entered disabled state [ 19.688196][ T462] veth2.10: entered allmulticast mode [ 19.688414][ T462] veth2: entered allmulticast mode [ 19.690388][ T462] veth2.10: entered promiscuous mode [ 19.690638][ T462] veth2: entered promiscuous mode [ 20.199085][ T479] br11: port 2(veth2.11) entered blocking state [ 20.199434][ T479] br11: port 2(veth2.11) entered disabled state [ 20.199775][ T479] veth2.11: entered allmulticast mode [ 20.203793][ T479] veth2.11: entered promiscuous mode [ 20.687848][ T491] br10: port 2(veth2.10) entered blocking state [ 20.688309][ T491] br10: port 2(veth2.10) entered forwarding state [ 20.689014][ T491] br10: port 1(veth1.10) entered blocking state [ 20.689380][ T491] br10: port 1(veth1.10) entered forwarding state [ 20.821196][ T496] br11: port 2(veth2.11) entered blocking state [ 20.821535][ T496] br11: port 2(veth2.11) entered forwarding state [ 20.822031][ T496] br11: port 1(veth1.11) entered blocking state [ 20.822318][ T496] br11: port 1(veth1.11) entered forwarding state [ 29.809994][ T550] [ 29.810321][ T550] ============================= [ 29.810492][ T550] WARNING: suspicious RCU usage [ 29.810924][ T550] 6.14.0-rc6-virtme #1 Not tainted [ 29.811117][ T550] ----------------------------- [ 29.811312][ T550] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 29.811623][ T550] [ 29.811623][ T550] other info that might help us debug this: [ 29.811623][ T550] [ 29.811937][ T550] [ 29.811937][ T550] rcu_scheduler_active = 2, debug_locks = 1 [ 29.812192][ T550] 1 lock held by mausezahn/550: [ 29.812358][ T550] #0: ffffffffb755b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 29.812667][ T550] [ 29.812667][ T550] stack backtrace: [ 29.812888][ T550] CPU: 0 UID: 0 PID: 550 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 29.812894][ T550] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.812898][ T550] Call Trace: [ 29.812900][ T550] [ 29.812905][ T550] dump_stack_lvl+0xb0/0xd0 [ 29.812915][ T550] lockdep_rcu_suspicious+0x1ea/0x280 [ 29.812927][ T550] dev_hard_start_xmit+0x2fc/0x3f0 [ 29.812938][ T550] __dev_queue_xmit+0xfaf/0x18d0 [ 29.812944][ T550] ? __pfx__copy_from_iter+0x10/0x10 [ 29.812954][ T550] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 29.812967][ T550] ? __pfx___dev_queue_xmit+0x10/0x10 [ 29.812971][ T550] ? packet_parse_headers+0x231/0x9c0 [ 29.812979][ T550] ? copy_page_from_iter+0xbd/0x120 [ 29.812985][ T550] ? __pfx_packet_parse_headers+0x10/0x10 [ 29.812989][ T550] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 29.813004][ T550] packet_snd+0xd0c/0x19d0 [ 29.813016][ T550] ? __lock_release+0x103/0x460 [ 29.813020][ T550] ? __might_fault+0x11b/0x170 [ 29.813028][ T550] ? __pfx_packet_snd+0x10/0x10 [ 29.813030][ T550] ? trace_lock_acquire+0x14c/0x1f0 [ 29.813033][ T550] ? __might_fault+0x11b/0x170 [ 29.813040][ T550] ? lock_acquire+0x32/0xc0 [ 29.813046][ T550] ? __might_fault+0x11b/0x170 [ 29.813060][ T550] __sys_sendto+0x3c3/0x450 [ 29.813066][ T550] ? __pfx___sys_sendto+0x10/0x10 [ 29.813080][ T550] ? sock_ioctl+0x3b6/0x590 [ 29.813084][ T550] ? __pfx___lock_release+0x10/0x10 [ 29.813091][ T550] ? __pfx___up_read+0x10/0x10 [ 29.813101][ T550] ? do_user_addr_fault+0x972/0xe30 [ 29.813110][ T550] ? do_user_addr_fault+0x97c/0xe30 [ 29.813117][ T550] __x64_sys_sendto+0xe0/0x1c0 [ 29.813121][ T550] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 29.813126][ T550] do_syscall_64+0xc1/0x1d0 [ 29.813135][ T550] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.813141][ T550] RIP: 0033:0x7fc554f5ca4a [ 29.813145][ T550] 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 [ 29.813148][ T550] RSP: 002b:00007ffcd3d6b718 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 29.813152][ T550] RAX: ffffffffffffffda RBX: 000000000a4a49d0 RCX: 00007fc554f5ca4a [ 29.813154][ T550] RDX: 0000000000001f6a RSI: 000000000a4a78e2 RDI: 0000000000000005 [ 29.813155][ T550] RBP: 000000000a4a78e2 R08: 00007ffcd3d6b720 R09: 0000000000000014 [ 29.813157][ T550] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 29.813159][ T550] R13: 0000000000001f6a R14: 00007ffcd3d6b720 R15: 0000000000000000 [ 29.813175][ T550] [ 101.828946][ T839] br11: port 2(veth2.11) entered disabled state [ 101.830335][ T839] br11: port 1(veth1.11) entered disabled state [ 101.924790][ T841] br10: port 2(veth2.10) entered disabled state [ 101.925319][ T841] br10: port 1(veth1.10) entered disabled state [ 102.143689][ T845] veth2.11: left allmulticast mode [ 102.145115][ T845] veth2.11: left promiscuous mode [ 102.146041][ T845] br11: port 2(veth2.11) entered disabled state [ 102.529557][ T853] veth2.10: left allmulticast mode [ 102.529839][ T853] veth2: left allmulticast mode [ 102.530089][ T853] veth2.10: left promiscuous mode [ 102.530300][ T853] veth2: left promiscuous mode [ 102.530844][ T853] br10: port 2(veth2.10) entered disabled state [ 103.094749][ T864] veth1.11: left allmulticast mode [ 103.094992][ T864] veth1.11: left promiscuous mode [ 103.095529][ T864] br11: port 1(veth1.11) entered disabled state [ 103.404005][ T870] veth1.10: left allmulticast mode [ 103.404305][ T870] veth1: left allmulticast mode [ 103.404514][ T870] veth1.10: left promiscuous mode [ 103.404689][ T870] veth1: left promiscuous mode [ 103.405249][ T870] br10: port 1(veth1.10) entered disabled state