[ 11.268077][ T258] ip (258) used greatest stack depth: 23520 bytes left [ 14.187430][ T305] br1: port 1(veth1) entered blocking state [ 14.187938][ T305] br1: port 1(veth1) entered disabled state [ 14.188636][ T305] veth1: entered allmulticast mode [ 14.190663][ T305] veth1: entered promiscuous mode [ 14.279834][ T46] br1: port 1(veth1) entered blocking state [ 14.280269][ T46] br1: port 1(veth1) entered forwarding state [ 14.356376][ T308] br1: port 2(veth2) entered blocking state [ 14.356773][ T308] br1: port 2(veth2) entered disabled state [ 14.357501][ T308] veth2: entered allmulticast mode [ 14.360068][ T308] veth2: entered promiscuous mode [ 14.439870][ T223] br1: port 2(veth2) entered blocking state [ 14.440153][ T223] br1: port 2(veth2) entered forwarding state [ 23.329543][ T359] GACT probability NOT on [ 23.471568][ T360] [ 23.471862][ T360] ============================= [ 23.472024][ T360] WARNING: suspicious RCU usage [ 23.472203][ T360] 6.14.0-rc6-virtme #1 Not tainted [ 23.472362][ T360] ----------------------------- [ 23.472521][ T360] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.472811][ T360] [ 23.472811][ T360] other info that might help us debug this: [ 23.472811][ T360] [ 23.473103][ T360] [ 23.473103][ T360] rcu_scheduler_active = 2, debug_locks = 1 [ 23.473341][ T360] 1 lock held by mausezahn/360: [ 23.473494][ T360] #0: ffffffff8b15b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.473800][ T360] [ 23.473800][ T360] stack backtrace: [ 23.473987][ T360] CPU: 0 UID: 0 PID: 360 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.473992][ T360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.473994][ T360] Call Trace: [ 23.474000][ T360] [ 23.474003][ T360] dump_stack_lvl+0xb0/0xd0 [ 23.474015][ T360] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.474034][ T360] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.474044][ T360] __dev_queue_xmit+0xfaf/0x18d0 [ 23.474059][ T360] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.474063][ T360] ? packet_parse_headers+0x231/0x9c0 [ 23.474074][ T360] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.474083][ T360] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.474087][ T360] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.474093][ T360] ? dev_get_by_index+0xb2/0x190 [ 23.474105][ T360] packet_snd+0xd0c/0x19d0 [ 23.474117][ T360] ? __lock_release+0x103/0x460 [ 23.474123][ T360] ? __might_fault+0x11b/0x170 [ 23.474134][ T360] ? __pfx_packet_snd+0x10/0x10 [ 23.474136][ T360] ? trace_lock_acquire+0x14c/0x1f0 [ 23.474138][ T360] ? __might_fault+0x11b/0x170 [ 23.474145][ T360] ? lock_acquire+0x32/0xc0 [ 23.474152][ T360] ? __might_fault+0x11b/0x170 [ 23.474163][ T360] __sys_sendto+0x3c3/0x450 [ 23.474173][ T360] ? __pfx___sys_sendto+0x10/0x10 [ 23.474188][ T360] ? sock_ioctl+0x3b6/0x590 [ 23.474200][ T360] ? __pfx___up_read+0x10/0x10 [ 23.474211][ T360] ? do_user_addr_fault+0x374/0xe30 [ 23.474226][ T360] ? do_user_addr_fault+0x374/0xe30 [ 23.474233][ T360] __x64_sys_sendto+0xe0/0x1c0 [ 23.474237][ T360] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.474243][ T360] do_syscall_64+0xc1/0x1d0 [ 23.474251][ T360] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.474261][ T360] RIP: 0033:0x7f8e6a7dea4a [ 23.474266][ T360] 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 [ 23.474269][ T360] RSP: 002b:00007fffc2df8618 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.474277][ T360] RAX: ffffffffffffffda RBX: 000000000aff39d0 RCX: 00007f8e6a7dea4a [ 23.474279][ T360] RDX: 0000000000000086 RSI: 000000000aff3ce2 RDI: 0000000000000005 [ 23.474281][ T360] RBP: 000000000aff3ce2 R08: 00007fffc2df8620 R09: 0000000000000014 [ 23.474283][ T360] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.474285][ T360] R13: 0000000000000086 R14: 00007fffc2df8620 R15: 0000000000000000 [ 23.474301][ T360] [ 32.898323][ T510] br1: port 2(veth2) entered disabled state [ 32.973131][ T511] veth2: left allmulticast mode [ 32.973786][ T511] veth2: left promiscuous mode [ 32.974121][ T511] br1: port 2(veth2) entered disabled state [ 33.065318][ T512] br1: port 1(veth1) entered disabled state [ 33.141898][ T513] veth1: left allmulticast mode [ 33.142149][ T513] veth1: left promiscuous mode [ 33.142477][ T513] br1: port 1(veth1) entered disabled state