[ 11.088191][ T251] ip (251) used greatest stack depth: 23552 bytes left [ 11.860991][ T275] ip (275) used greatest stack depth: 23296 bytes left [ 13.563365][ T296] 8021q: 802.1Q VLAN Support v1.8 [ 15.382149][ T321] lag2: Mode changed to "loadbalance" [ 15.584290][ T324] lag2: Port device veth3 added [ 15.888403][ T327] lag2: Port device veth5 added [ 16.063924][ T329] 8021q: adding VLAN 0 to HW filter on device lag2 [ 16.146744][ T330] 8021q: adding VLAN 0 to HW filter on device lag2 [ 16.581446][ T335] gre: GRE over IPv4 demultiplexor driver [ 16.599491][ T335] ip_gre: GRE over IPv4 tunneling driver [ 18.550573][ T363] lag1: Mode changed to "loadbalance" [ 18.768299][ T366] lag1: Port device veth2 added [ 18.813155][ T321] [ 18.813513][ T321] ============================= [ 18.813791][ T321] WARNING: suspicious RCU usage [ 18.813994][ T321] 6.14.0-rc6-virtme #1 Not tainted [ 18.814220][ T321] ----------------------------- [ 18.814446][ T321] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 18.814833][ T321] [ 18.814833][ T321] other info that might help us debug this: [ 18.814833][ T321] [ 18.815276][ T321] [ 18.815276][ T321] rcu_scheduler_active = 2, debug_locks = 1 [ 18.815742][ T321] 1 lock held by teamd/321: [ 18.816039][ T321] #0: ffffffff9755b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 18.816486][ T321] [ 18.816486][ T321] stack backtrace: [ 18.816950][ T321] CPU: 2 UID: 0 PID: 321 Comm: teamd Not tainted 6.14.0-rc6-virtme #1 [ 18.816954][ T321] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.816956][ T321] Call Trace: [ 18.816958][ T321] [ 18.816961][ T321] dump_stack_lvl+0xb0/0xd0 [ 18.816971][ T321] lockdep_rcu_suspicious+0x1ea/0x280 [ 18.816986][ T321] dev_hard_start_xmit+0x2fc/0x3f0 [ 18.817004][ T321] __dev_queue_xmit+0xfaf/0x18d0 [ 18.817029][ T321] ? __pfx___dev_queue_xmit+0x10/0x10 [ 18.817036][ T321] ? packet_parse_headers+0x231/0x9c0 [ 18.817050][ T321] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 18.817058][ T321] ? __pfx_packet_parse_headers+0x10/0x10 [ 18.817067][ T321] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 18.817076][ T321] ? packet_cached_dev_get+0xd5/0x210 [ 18.817093][ T321] packet_snd+0xd0c/0x19d0 [ 18.817111][ T321] ? __pfx_packet_snd+0x10/0x10 [ 18.817118][ T321] ? build_sched_domains+0x14d0/0x1690 [ 18.817126][ T321] ? __lock_release+0x103/0x460 [ 18.817130][ T321] ? __might_fault+0x11b/0x170 [ 18.817136][ T321] ? __pfx___lock_release+0x10/0x10 [ 18.817146][ T321] __sys_sendto+0x3c3/0x450 [ 18.817152][ T321] ? __pfx___sys_sendto+0x10/0x10 [ 18.817154][ T321] ? __might_fault+0x11b/0x170 [ 18.817168][ T321] ? __sys_getsockname+0x150/0x1f0 [ 18.817173][ T321] ? __pfx___sys_getsockname+0x10/0x10 [ 18.817178][ T321] ? __virt_addr_valid+0x22b/0x430 [ 18.817185][ T321] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 18.817191][ T321] ? trace_rcu_segcb_stats+0x36/0x1e0 [ 18.817200][ T321] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 18.817204][ T321] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 18.817212][ T321] __x64_sys_sendto+0xe0/0x1c0 [ 18.817216][ T321] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 18.817221][ T321] do_syscall_64+0xc1/0x1d0 [ 18.817229][ T321] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 18.817234][ T321] RIP: 0033:0x7fcc1e9dc8f0 [ 18.817239][ T321] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 [ 18.817242][ T321] RSP: 002b:00007fff178af3e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 18.817246][ T321] RAX: ffffffffffffffda RBX: 00000000361273f0 RCX: 00007fcc1e9dc8f0 [ 18.817249][ T321] RDX: 000000000000007c RSI: 00007fff178af460 RDI: 0000000000000006 [ 18.817252][ T321] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 18.817255][ T321] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000007c [ 18.817257][ T321] R13: 00007fff178af460 R14: 0000000000000006 R15: 000000003611a650 [ 18.817286][ T321] [ 19.122920][ T369] lag1: Port device veth4 added [ 19.320662][ T371] 8021q: adding VLAN 0 to HW filter on device lag1 [ 25.797256][ T397] Mirror/redirect action on [ 26.008045][ T400] GACT probability NOT on [ 26.134483][ T401] lag2: Port device veth5 removed [ 30.299740][ T412] lag2: Port device veth3 removed [ 35.674303][ T442] lag2: Mode changed to "loadbalance" [ 35.858106][ T445] lag2: Port device veth3 added [ 36.137589][ T450] lag2: Port device veth5 added [ 36.307016][ T452] 8021q: adding VLAN 0 to HW filter on device lag2 [ 36.397944][ T453] 8021q: adding VLAN 0 to HW filter on device lag2 [ 43.013438][ T487] lag2: Port device veth3 removed [ 47.176222][ T497] lag2: Port device veth5 removed [ 52.672902][ T527] lag2: Mode changed to "loadbalance" [ 52.861269][ T530] lag2: Port device veth3 added [ 53.158303][ T535] lag2: Port device veth5 added [ 53.325352][ T537] 8021q: adding VLAN 0 to HW filter on device lag2 [ 53.439489][ T538] 8021q: adding VLAN 0 to HW filter on device lag2 [ 60.167462][ T363] lag1: Port device veth4 removed [ 60.184048][ T363] lag1: Port device veth2 removed [ 62.353847][ T527] lag2: Port device veth5 removed [ 62.357826][ T527] lag2: Port device veth3 removed