[ 10.487368][ T250] ip (250) used greatest stack depth: 24320 bytes left [ 15.348317][ T370] br: port 1(veth1) entered blocking state [ 15.348739][ T370] br: port 1(veth1) entered disabled state [ 15.349094][ T370] veth1: entered allmulticast mode [ 15.351325][ T370] veth1: entered promiscuous mode [ 15.353799][ T38] br: port 1(veth1) entered blocking state [ 15.354162][ T38] br: port 1(veth1) entered forwarding state [ 15.462097][ T375] br: port 2(veth3) entered blocking state [ 15.462581][ T375] br: port 2(veth3) entered disabled state [ 15.463300][ T375] veth3: entered allmulticast mode [ 15.465193][ T375] veth3: entered promiscuous mode [ 15.467625][ T275] br: port 2(veth3) entered blocking state [ 15.468054][ T275] br: port 2(veth3) entered forwarding state [ 15.591210][ T380] br: port 3(veth4) entered blocking state [ 15.591516][ T380] br: port 3(veth4) entered disabled state [ 15.592027][ T380] veth4: entered allmulticast mode [ 15.595142][ T380] veth4: entered promiscuous mode [ 15.596601][ T41] br: port 3(veth4) entered blocking state [ 15.596915][ T41] br: port 3(veth4) entered forwarding state [ 16.667291][ T414] ip (414) used greatest stack depth: 24128 bytes left [ 26.492121][ T468] [ 26.492541][ T468] ============================= [ 26.492721][ T468] WARNING: suspicious RCU usage [ 26.492888][ T468] 6.14.0-rc6-virtme #1 Not tainted [ 26.493248][ T468] ----------------------------- [ 26.493444][ T468] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 26.493734][ T468] [ 26.493734][ T468] other info that might help us debug this: [ 26.493734][ T468] [ 26.494103][ T468] [ 26.494103][ T468] rcu_scheduler_active = 2, debug_locks = 1 [ 26.494370][ T468] 1 lock held by mausezahn/468: [ 26.494554][ T468] #0: ffffffffb015b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 26.494853][ T468] [ 26.494853][ T468] stack backtrace: [ 26.495070][ T468] CPU: 2 UID: 0 PID: 468 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 26.495075][ T468] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 26.495078][ T468] Call Trace: [ 26.495079][ T468] [ 26.495082][ T468] dump_stack_lvl+0xb0/0xd0 [ 26.495089][ T468] lockdep_rcu_suspicious+0x1ea/0x280 [ 26.495099][ T468] dev_hard_start_xmit+0x2fc/0x3f0 [ 26.495109][ T468] sch_direct_xmit+0x1e0/0xa60 [ 26.495120][ T468] ? __pfx_sch_direct_xmit+0x10/0x10 [ 26.495140][ T468] __qdisc_run+0x1b9/0x3b0 [ 26.495147][ T468] ? __lock_acquire+0xb9a/0x1680 [ 26.495155][ T468] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 26.495162][ T468] ? __pfx___qdisc_run+0x10/0x10 [ 26.495169][ T468] ? tbf_enqueue+0x21e/0x7b0 [sch_tbf] [ 26.495175][ T468] ? lock_acquire+0x32/0xc0 [ 26.495178][ T468] ? __dev_xmit_skb+0x301/0x10b0 [ 26.495188][ T468] __dev_xmit_skb+0x4a5/0x10b0 [ 26.495193][ T468] ? lock_sync+0xd0/0x180 [ 26.495199][ T468] ? __pfx___dev_xmit_skb+0x10/0x10 [ 26.495206][ T468] ? lock_acquire+0x32/0xc0 [ 26.495209][ T468] ? __dev_queue_xmit+0x1f0/0x18d0 [ 26.495216][ T468] __dev_queue_xmit+0x784/0x18d0 [ 26.495230][ T468] ? __pfx___dev_queue_xmit+0x10/0x10 [ 26.495234][ T468] ? packet_parse_headers+0x231/0x9c0 [ 26.495243][ T468] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 26.495249][ T468] ? __pfx_packet_parse_headers+0x10/0x10 [ 26.495253][ T468] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 26.495258][ T468] ? dev_get_by_index+0xb2/0x190 [ 26.495271][ T468] packet_snd+0xd0c/0x19d0 [ 26.495282][ T468] ? __lock_release+0x103/0x460 [ 26.495285][ T468] ? __might_fault+0x11b/0x170 [ 26.495292][ T468] ? __pfx_packet_snd+0x10/0x10 [ 26.495294][ T468] ? trace_lock_acquire+0x14c/0x1f0 [ 26.495297][ T468] ? __might_fault+0x11b/0x170 [ 26.495303][ T468] ? lock_acquire+0x32/0xc0 [ 26.495310][ T468] ? __might_fault+0x11b/0x170 [ 26.495321][ T468] __sys_sendto+0x3c3/0x450 [ 26.495326][ T468] ? __pfx___sys_sendto+0x10/0x10 [ 26.495340][ T468] ? sock_ioctl+0x3b6/0x590 [ 26.495349][ T468] ? __pfx___up_read+0x10/0x10 [ 26.495356][ T468] ? do_user_addr_fault+0x374/0xe30 [ 26.495366][ T468] ? do_user_addr_fault+0x374/0xe30 [ 26.495373][ T468] __x64_sys_sendto+0xe0/0x1c0 [ 26.495377][ T468] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 26.495384][ T468] do_syscall_64+0xc1/0x1d0 [ 26.495395][ T468] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 26.495401][ T468] RIP: 0033:0x7fe7f743aa4a [ 26.495407][ T468] 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 [ 26.495409][ T468] RSP: 002b:00007ffe12d17438 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 26.495413][ T468] RAX: ffffffffffffffda RBX: 00000000205739d0 RCX: 00007fe7f743aa4a [ 26.495415][ T468] RDX: 00000000000005ae RSI: 0000000020574252 RDI: 0000000000000005 [ 26.495417][ T468] RBP: 0000000020574252 R08: 00007ffe12d17440 R09: 0000000000000014 [ 26.495419][ T468] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 26.495420][ T468] R13: 00000000000005ae R14: 00007ffe12d17440 R15: 0000000000000000 [ 26.495436][ T468] [ 106.918111][ T806] Mirror/redirect action on [ 106.937233][ T804] tc (804) used greatest stack depth: 23616 bytes left [ 142.387417][ T983] br: port 3(veth4) entered disabled state [ 142.388657][ T983] veth4: left allmulticast mode [ 142.388874][ T983] veth4: left promiscuous mode [ 142.389192][ T983] br: port 3(veth4) entered disabled state [ 142.476687][ T985] br: port 2(veth3) entered disabled state [ 142.477891][ T985] veth3: left allmulticast mode [ 142.478192][ T985] veth3: left promiscuous mode [ 142.479534][ T985] br: port 2(veth3) entered disabled state [ 142.560677][ T987] br: port 1(veth1) entered disabled state [ 142.561839][ T987] veth1: left allmulticast mode [ 142.562035][ T987] veth1: left promiscuous mode [ 142.562358][ T987] br: port 1(veth1) entered disabled state