[ 10.586590][ T251] ip (251) used greatest stack depth: 23248 bytes left [ 12.601009][ T290] 8021q: 802.1Q VLAN Support v1.8 [ 14.322677][ T312] br0: port 1(veth1) entered blocking state [ 14.323182][ T312] br0: port 1(veth1) entered disabled state [ 14.323629][ T312] veth1: entered allmulticast mode [ 14.325860][ T312] veth1: entered promiscuous mode [ 14.405859][ T314] br0: port 2(veth2) entered blocking state [ 14.406203][ T314] br0: port 2(veth2) entered disabled state [ 14.406529][ T314] veth2: entered allmulticast mode [ 14.409233][ T314] veth2: entered promiscuous mode [ 14.653386][ T40] br0: port 1(veth1) entered blocking state [ 14.653771][ T40] br0: port 1(veth1) entered forwarding state [ 14.727246][ T40] br0: port 2(veth2) entered blocking state [ 14.727523][ T40] br0: port 2(veth2) entered forwarding state [ 63.343530][ T507] [ 63.343863][ T507] ============================= [ 63.344115][ T507] WARNING: suspicious RCU usage [ 63.344330][ T507] 6.14.0-rc6-virtme #1 Not tainted [ 63.344535][ T507] ----------------------------- [ 63.344741][ T507] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 63.345147][ T507] [ 63.345147][ T507] other info that might help us debug this: [ 63.345147][ T507] [ 63.345537][ T507] [ 63.345537][ T507] rcu_scheduler_active = 2, debug_locks = 1 [ 63.345840][ T507] 1 lock held by mausezahn/507: [ 63.346058][ T507] #0: ffffffff9635b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 63.346432][ T507] [ 63.346432][ T507] stack backtrace: [ 63.346683][ T507] CPU: 3 UID: 0 PID: 507 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 63.346687][ T507] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 63.346689][ T507] Call Trace: [ 63.346691][ T507] [ 63.346693][ T507] dump_stack_lvl+0xb0/0xd0 [ 63.346701][ T507] lockdep_rcu_suspicious+0x1ea/0x280 [ 63.346711][ T507] dev_hard_start_xmit+0x2fc/0x3f0 [ 63.346721][ T507] __dev_queue_xmit+0xfaf/0x18d0 [ 63.346735][ T507] ? __pfx___dev_queue_xmit+0x10/0x10 [ 63.346740][ T507] ? packet_parse_headers+0x231/0x9c0 [ 63.346748][ T507] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 63.346754][ T507] ? __pfx_packet_parse_headers+0x10/0x10 [ 63.346759][ T507] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 63.346764][ T507] ? dev_get_by_index+0xb2/0x190 [ 63.346776][ T507] packet_snd+0xd0c/0x19d0 [ 63.346787][ T507] ? __lock_release+0x103/0x460 [ 63.346791][ T507] ? __might_fault+0x11b/0x170 [ 63.346798][ T507] ? __pfx_packet_snd+0x10/0x10 [ 63.346800][ T507] ? trace_lock_acquire+0x14c/0x1f0 [ 63.346802][ T507] ? __might_fault+0x11b/0x170 [ 63.346809][ T507] ? lock_acquire+0x32/0xc0 [ 63.346815][ T507] ? __might_fault+0x11b/0x170 [ 63.346826][ T507] __sys_sendto+0x3c3/0x450 [ 63.346833][ T507] ? __pfx___sys_sendto+0x10/0x10 [ 63.346847][ T507] ? sock_ioctl+0x3b6/0x590 [ 63.346856][ T507] ? __pfx___up_read+0x10/0x10 [ 63.346864][ T507] ? do_user_addr_fault+0x374/0xe30 [ 63.346875][ T507] ? do_user_addr_fault+0x374/0xe30 [ 63.346882][ T507] __x64_sys_sendto+0xe0/0x1c0 [ 63.346885][ T507] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 63.346891][ T507] do_syscall_64+0xc1/0x1d0 [ 63.346898][ T507] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.346903][ T507] RIP: 0033:0x7fbe7314ca4a [ 63.346908][ T507] 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 [ 63.346911][ T507] RSP: 002b:00007fff69b5d078 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 63.346914][ T507] RAX: ffffffffffffffda RBX: 0000000029ac29d0 RCX: 00007fbe7314ca4a [ 63.346916][ T507] RDX: 000000000000002a RSI: 0000000029ac2c92 RDI: 0000000000000005 [ 63.346918][ T507] RBP: 0000000029ac2c92 R08: 00007fff69b5d080 R09: 0000000000000014 [ 63.346920][ T507] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.346921][ T507] R13: 000000000000002a R14: 00007fff69b5d080 R15: 0000000000000000 [ 63.346937][ T507] [ 69.482120][ T584] Mirror/redirect action on [ 77.130948][ T620] br0: port 2(veth2) entered disabled state [ 77.228780][ T621] br0: port 1(veth1) entered disabled state [ 77.308674][ T622] veth2: left allmulticast mode [ 77.308979][ T622] veth2: left promiscuous mode [ 77.309314][ T622] br0: port 2(veth2) entered disabled state [ 77.310791][ T622] veth1: left allmulticast mode [ 77.310983][ T622] veth1: left promiscuous mode [ 77.311352][ T622] br0: port 1(veth1) entered disabled state