[ 11.853043][ T275] ip (275) used greatest stack depth: 24464 bytes left [ 13.419026][ T296] 8021q: 802.1Q VLAN Support v1.8 [ 14.234569][ T307] ip (307) used greatest stack depth: 24224 bytes left [ 15.165020][ T321] lag2: Mode changed to "loadbalance" [ 15.340302][ T324] lag2: Port device veth3 added [ 15.616379][ T327] lag2: Port device veth5 added [ 15.769308][ T329] 8021q: adding VLAN 0 to HW filter on device lag2 [ 15.850387][ T330] 8021q: adding VLAN 0 to HW filter on device lag2 [ 16.273500][ T335] gre: GRE over IPv4 demultiplexor driver [ 16.288863][ T335] ip_gre: GRE over IPv4 tunneling driver [ 18.045736][ T363] lag1: Mode changed to "loadbalance" [ 18.235136][ T366] lag1: Port device veth2 added [ 18.255346][ T321] [ 18.255610][ T321] ============================= [ 18.255773][ T321] WARNING: suspicious RCU usage [ 18.255953][ T321] 6.14.0-rc6-virtme #1 Not tainted [ 18.256110][ T321] ----------------------------- [ 18.256262][ T321] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 18.256529][ T321] [ 18.256529][ T321] other info that might help us debug this: [ 18.256529][ T321] [ 18.256829][ T321] [ 18.256829][ T321] rcu_scheduler_active = 2, debug_locks = 1 [ 18.257074][ T321] 1 lock held by teamd/321: [ 18.257237][ T321] #0: ffffffffb935b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 18.257553][ T321] [ 18.257553][ T321] stack backtrace: [ 18.257765][ T321] CPU: 0 UID: 0 PID: 321 Comm: teamd Not tainted 6.14.0-rc6-virtme #1 [ 18.257770][ T321] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.257772][ T321] Call Trace: [ 18.257774][ T321] [ 18.257776][ T321] dump_stack_lvl+0xb0/0xd0 [ 18.257783][ T321] lockdep_rcu_suspicious+0x1ea/0x280 [ 18.257794][ T321] dev_hard_start_xmit+0x2fc/0x3f0 [ 18.257804][ T321] __dev_queue_xmit+0xfaf/0x18d0 [ 18.257819][ T321] ? __pfx___dev_queue_xmit+0x10/0x10 [ 18.257823][ T321] ? packet_parse_headers+0x231/0x9c0 [ 18.257831][ T321] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 18.257837][ T321] ? __pfx_packet_parse_headers+0x10/0x10 [ 18.257842][ T321] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 18.257848][ T321] ? packet_cached_dev_get+0xd5/0x210 [ 18.257857][ T321] packet_snd+0xd0c/0x19d0 [ 18.257872][ T321] ? __pfx_packet_snd+0x10/0x10 [ 18.257878][ T321] ? build_sched_domains+0x14d0/0x1690 [ 18.257886][ T321] ? __lock_release+0x103/0x460 [ 18.257890][ T321] ? __might_fault+0x11b/0x170 [ 18.257896][ T321] ? __pfx___lock_release+0x10/0x10 [ 18.257905][ T321] __sys_sendto+0x3c3/0x450 [ 18.257911][ T321] ? __pfx___sys_sendto+0x10/0x10 [ 18.257913][ T321] ? __might_fault+0x11b/0x170 [ 18.257928][ T321] ? __sys_getsockname+0x150/0x1f0 [ 18.257932][ T321] ? __pfx___sys_getsockname+0x10/0x10 [ 18.257937][ T321] ? __virt_addr_valid+0x22b/0x430 [ 18.257945][ T321] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 18.257950][ T321] ? trace_rcu_segcb_stats+0x36/0x1e0 [ 18.257959][ T321] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 18.257963][ T321] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 18.257971][ T321] __x64_sys_sendto+0xe0/0x1c0 [ 18.257975][ T321] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 18.257980][ T321] do_syscall_64+0xc1/0x1d0 [ 18.257988][ T321] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 18.257992][ T321] RIP: 0033:0x7fa5a4c618f0 [ 18.257997][ 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 [ 18.258000][ T321] RSP: 002b:00007fff6c253f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 18.258004][ T321] RAX: ffffffffffffffda RBX: 000000000b0092d0 RCX: 00007fa5a4c618f0 [ 18.258006][ T321] RDX: 000000000000007c RSI: 00007fff6c253f80 RDI: 0000000000000006 [ 18.258008][ T321] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 18.258009][ T321] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000007c [ 18.258011][ T321] R13: 00007fff6c253f80 R14: 0000000000000006 R15: 000000000affc650 [ 18.258027][ T321] [ 18.553852][ T369] lag1: Port device veth4 added [ 18.702194][ T371] 8021q: adding VLAN 0 to HW filter on device lag1 [ 25.121268][ T397] Mirror/redirect action on [ 25.316796][ T400] GACT probability NOT on [ 25.431533][ T401] lag2: Port device veth5 removed [ 29.516213][ T411] lag2: Port device veth3 removed [ 29.529108][ T411] ip (411) used greatest stack depth: 23920 bytes left [ 35.065507][ T441] lag2: Mode changed to "loadbalance" [ 35.252112][ T444] lag2: Port device veth3 added [ 35.544099][ T449] lag2: Port device veth5 added [ 35.699223][ T451] 8021q: adding VLAN 0 to HW filter on device lag2 [ 35.798035][ T452] 8021q: adding VLAN 0 to HW filter on device lag2 [ 42.403910][ T486] lag2: Port device veth3 removed [ 46.556813][ T496] lag2: Port device veth5 removed [ 52.079428][ T527] lag2: Mode changed to "loadbalance" [ 52.251547][ T530] lag2: Port device veth3 added [ 52.565497][ T535] lag2: Port device veth5 added [ 52.768304][ T537] 8021q: adding VLAN 0 to HW filter on device lag2 [ 52.871210][ T538] 8021q: adding VLAN 0 to HW filter on device lag2 [ 59.493382][ T363] lag1: Port device veth4 removed [ 59.500976][ T363] lag1: Port device veth2 removed [ 61.575872][ T527] lag2: Port device veth5 removed [ 61.586334][ T527] lag2: Port device veth3 removed