[ 10.636697][ T250] ip (250) used greatest stack depth: 24552 bytes left [ 11.007384][ T260] ip (260) used greatest stack depth: 23728 bytes left [ 12.898592][ T295] 8021q: 802.1Q VLAN Support v1.8 [ 14.558571][ T320] lag2: Mode changed to "loadbalance" [ 14.798411][ T323] lag2: Port device veth3 added [ 15.063617][ T327] lag2: Port device veth5 added [ 15.250879][ T329] 8021q: adding VLAN 0 to HW filter on device lag2 [ 15.346872][ T330] 8021q: adding VLAN 0 to HW filter on device lag2 [ 15.760844][ T335] gre: GRE over IPv4 demultiplexor driver [ 15.774046][ T335] ip_gre: GRE over IPv4 tunneling driver [ 17.540626][ T362] lag1: Mode changed to "loadbalance" [ 17.734749][ T365] lag1: Port device veth2 added [ 17.772974][ T320] [ 17.773308][ T320] ============================= [ 17.773476][ T320] WARNING: suspicious RCU usage [ 17.773634][ T320] 6.14.0-rc6-virtme #1 Not tainted [ 17.774060][ T320] ----------------------------- [ 17.774236][ T320] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 17.774499][ T320] [ 17.774499][ T320] other info that might help us debug this: [ 17.774499][ T320] [ 17.774793][ T320] [ 17.774793][ T320] rcu_scheduler_active = 2, debug_locks = 1 [ 17.775025][ T320] 1 lock held by teamd/320: [ 17.775233][ T320] #0: ffffffffaa15b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 17.775530][ T320] [ 17.775530][ T320] stack backtrace: [ 17.775723][ T320] CPU: 1 UID: 0 PID: 320 Comm: teamd Not tainted 6.14.0-rc6-virtme #1 [ 17.775728][ T320] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.775730][ T320] Call Trace: [ 17.775732][ T320] [ 17.775735][ T320] dump_stack_lvl+0xb0/0xd0 [ 17.775744][ T320] lockdep_rcu_suspicious+0x1ea/0x280 [ 17.775756][ T320] dev_hard_start_xmit+0x2fc/0x3f0 [ 17.775767][ T320] __dev_queue_xmit+0xfaf/0x18d0 [ 17.775782][ T320] ? __pfx___dev_queue_xmit+0x10/0x10 [ 17.775786][ T320] ? packet_parse_headers+0x231/0x9c0 [ 17.775796][ T320] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 17.775803][ T320] ? __pfx_packet_parse_headers+0x10/0x10 [ 17.775808][ T320] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 17.775815][ T320] ? packet_cached_dev_get+0xd5/0x210 [ 17.775824][ T320] packet_snd+0xd0c/0x19d0 [ 17.775839][ T320] ? __pfx_packet_snd+0x10/0x10 [ 17.775845][ T320] ? build_sched_domains+0x14d0/0x1690 [ 17.775854][ T320] ? __lock_release+0x103/0x460 [ 17.775858][ T320] ? __might_fault+0x11b/0x170 [ 17.775866][ T320] ? __pfx___lock_release+0x10/0x10 [ 17.775875][ T320] __sys_sendto+0x3c3/0x450 [ 17.775882][ T320] ? __pfx___sys_sendto+0x10/0x10 [ 17.775884][ T320] ? __might_fault+0x11b/0x170 [ 17.775899][ T320] ? __sys_getsockname+0x150/0x1f0 [ 17.775903][ T320] ? __pfx___sys_getsockname+0x10/0x10 [ 17.775908][ T320] ? __virt_addr_valid+0x22b/0x430 [ 17.775917][ T320] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 17.775924][ T320] ? trace_rcu_segcb_stats+0x36/0x1e0 [ 17.775934][ T320] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 17.775937][ T320] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 17.775946][ T320] __x64_sys_sendto+0xe0/0x1c0 [ 17.775950][ T320] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 17.775956][ T320] do_syscall_64+0xc1/0x1d0 [ 17.775965][ T320] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.775971][ T320] RIP: 0033:0x7fe2af28c8f0 [ 17.775976][ T320] 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 [ 17.775980][ T320] RSP: 002b:00007fff9ad4c008 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 17.775984][ T320] RAX: ffffffffffffffda RBX: 000000001a0a73f0 RCX: 00007fe2af28c8f0 [ 17.775986][ T320] RDX: 000000000000007c RSI: 00007fff9ad4c080 RDI: 0000000000000006 [ 17.775988][ T320] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 17.775990][ T320] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000007c [ 17.775992][ T320] R13: 00007fff9ad4c080 R14: 0000000000000006 R15: 000000001a09a650 [ 17.776008][ T320] [ 18.040570][ T368] lag1: Port device veth4 added [ 18.197695][ T370] 8021q: adding VLAN 0 to HW filter on device lag1 [ 24.448088][ T396] Mirror/redirect action on [ 24.643108][ T399] GACT probability NOT on [ 24.733074][ T400] lag2: Port device veth5 removed [ 28.842450][ T410] lag2: Port device veth3 removed [ 34.299142][ T441] lag2: Mode changed to "loadbalance" [ 34.467929][ T444] lag2: Port device veth3 added [ 34.777219][ T449] lag2: Port device veth5 added [ 34.940149][ T451] 8021q: adding VLAN 0 to HW filter on device lag2 [ 35.036731][ T452] 8021q: adding VLAN 0 to HW filter on device lag2 [ 41.533647][ T486] lag2: Port device veth3 removed [ 45.655971][ T496] lag2: Port device veth5 removed [ 51.106088][ T526] lag2: Mode changed to "loadbalance" [ 51.290480][ T529] lag2: Port device veth3 added [ 51.595914][ T534] lag2: Port device veth5 added [ 51.760919][ T536] 8021q: adding VLAN 0 to HW filter on device lag2 [ 51.852672][ T537] 8021q: adding VLAN 0 to HW filter on device lag2 [ 58.310834][ T362] lag1: Port device veth4 removed [ 58.318810][ T362] lag1: Port device veth2 removed [ 58.726699][ T362] teamd (362) used greatest stack depth: 23424 bytes left [ 60.292327][ T526] lag2: Port device veth5 removed [ 60.297780][ T526] lag2: Port device veth3 removed