[ 11.243076][ T250] ip (250) used greatest stack depth: 24256 bytes left [ 14.216374][ T300] br0: port 1(veth1) entered blocking state [ 14.217021][ T300] br0: port 1(veth1) entered disabled state [ 14.217612][ T300] veth1: entered allmulticast mode [ 14.232662][ T300] veth1: entered promiscuous mode [ 14.342576][ T302] br0: port 2(veth2) entered blocking state [ 14.343027][ T302] br0: port 2(veth2) entered disabled state [ 14.343474][ T302] veth2: entered allmulticast mode [ 14.347545][ T302] veth2: entered promiscuous mode [ 14.516974][ T38] br0: port 1(veth1) entered blocking state [ 14.517362][ T38] br0: port 1(veth1) entered forwarding state [ 14.599220][ T41] br0: port 2(veth2) entered blocking state [ 14.599589][ T41] br0: port 2(veth2) entered forwarding state [ 23.043296][ T350] veth0: entered promiscuous mode [ 23.536243][ T356] GACT probability NOT on [ 23.679574][ T357] [ 23.679867][ T357] ============================= [ 23.680025][ T357] WARNING: suspicious RCU usage [ 23.680177][ T357] 6.14.0-rc6-virtme #1 Not tainted [ 23.680457][ T357] ----------------------------- [ 23.680623][ T357] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.680884][ T357] [ 23.680884][ T357] other info that might help us debug this: [ 23.680884][ T357] [ 23.681178][ T357] [ 23.681178][ T357] rcu_scheduler_active = 2, debug_locks = 1 [ 23.681399][ T357] 1 lock held by mausezahn/357: [ 23.681564][ T357] #0: ffffffff9ab5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.681855][ T357] [ 23.681855][ T357] stack backtrace: [ 23.682050][ T357] CPU: 3 UID: 0 PID: 357 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.682055][ T357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.682058][ T357] Call Trace: [ 23.682060][ T357] [ 23.682062][ T357] dump_stack_lvl+0xb0/0xd0 [ 23.682071][ T357] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.682083][ T357] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.682093][ T357] __dev_queue_xmit+0xfaf/0x18d0 [ 23.682108][ T357] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.682112][ T357] ? packet_parse_headers+0x231/0x9c0 [ 23.682121][ T357] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.682128][ T357] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.682133][ T357] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.682139][ T357] ? dev_get_by_index+0xb2/0x190 [ 23.682152][ T357] packet_snd+0xd0c/0x19d0 [ 23.682163][ T357] ? __lock_release+0x103/0x460 [ 23.682167][ T357] ? __might_fault+0x11b/0x170 [ 23.682176][ T357] ? __pfx_packet_snd+0x10/0x10 [ 23.682178][ T357] ? trace_lock_acquire+0x14c/0x1f0 [ 23.682181][ T357] ? __might_fault+0x11b/0x170 [ 23.682188][ T357] ? lock_acquire+0x32/0xc0 [ 23.682194][ T357] ? __might_fault+0x11b/0x170 [ 23.682205][ T357] __sys_sendto+0x3c3/0x450 [ 23.682212][ T357] ? __pfx___sys_sendto+0x10/0x10 [ 23.682226][ T357] ? sock_ioctl+0x3b6/0x590 [ 23.682236][ T357] ? __pfx___up_read+0x10/0x10 [ 23.682246][ T357] ? do_user_addr_fault+0x374/0xe30 [ 23.682257][ T357] ? do_user_addr_fault+0x374/0xe30 [ 23.682265][ T357] __x64_sys_sendto+0xe0/0x1c0 [ 23.682268][ T357] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.682274][ T357] do_syscall_64+0xc1/0x1d0 [ 23.682283][ T357] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.682288][ T357] RIP: 0033:0x7f043a856a4a [ 23.682293][ T357] 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 [ 23.682296][ T357] RSP: 002b:00007ffffd63f958 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.682300][ T357] RAX: ffffffffffffffda RBX: 0000000022aa09d0 RCX: 00007f043a856a4a [ 23.682302][ T357] RDX: 0000000000000062 RSI: 0000000022aa05c2 RDI: 0000000000000005 [ 23.682305][ T357] RBP: 0000000022aa05c2 R08: 00007ffffd63f960 R09: 0000000000000014 [ 23.682307][ T357] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.682308][ T357] R13: 0000000000000062 R14: 00007ffffd63f960 R15: 0000000000000000 [ 23.682325][ T357] [ 49.493325][ T384] veth0: left promiscuous mode [ 49.803365][ T396] veth3: entered promiscuous mode [ 51.705200][ T405] veth3: left promiscuous mode [ 51.848574][ T407] veth3: entered promiscuous mode [ 53.722232][ T416] veth3: left promiscuous mode [ 53.876465][ T419] veth3: entered promiscuous mode [ 55.665084][ T428] veth3: left promiscuous mode [ 55.815961][ T430] veth3: entered promiscuous mode [ 57.653013][ T439] veth3: left promiscuous mode [ 81.592790][ T495] veth3: entered promiscuous mode [ 84.827539][ T515] veth3: left promiscuous mode [ 85.166906][ T523] br0: port 2(veth2) entered disabled state [ 85.272553][ T524] br0: port 1(veth1) entered disabled state [ 85.352847][ T525] veth2: left allmulticast mode [ 85.353174][ T525] veth2: left promiscuous mode [ 85.353566][ T525] br0: port 2(veth2) entered disabled state [ 85.355239][ T525] veth1: left allmulticast mode [ 85.355519][ T525] veth1: left promiscuous mode [ 85.355867][ T525] br0: port 1(veth1) entered disabled state [ 85.436543][ T525] ip (525) used greatest stack depth: 23824 bytes left