[ 10.257172][ T251] ip (251) used greatest stack depth: 23888 bytes left [ 12.360371][ T307] 8021q: 802.1Q VLAN Support v1.8 [ 15.248678][ T378] GACT probability NOT on [ 16.413676][ T414] br10: port 1(veth1.10) entered blocking state [ 16.414114][ T414] br10: port 1(veth1.10) entered disabled state [ 16.414474][ T414] veth1.10: entered allmulticast mode [ 16.414667][ T414] veth1: entered allmulticast mode [ 16.416660][ T414] veth1.10: entered promiscuous mode [ 16.416851][ T414] veth1: entered promiscuous mode [ 16.819551][ T431] br11: port 1(veth1.11) entered blocking state [ 16.819861][ T431] br11: port 1(veth1.11) entered disabled state [ 16.820609][ T431] veth1.11: entered allmulticast mode [ 16.822505][ T431] veth1.11: entered promiscuous mode [ 17.525206][ T462] br10: port 2(veth2.10) entered blocking state [ 17.525477][ T462] br10: port 2(veth2.10) entered disabled state [ 17.525971][ T462] veth2.10: entered allmulticast mode [ 17.526941][ T462] veth2: entered allmulticast mode [ 17.528868][ T462] veth2.10: entered promiscuous mode [ 17.529071][ T462] veth2: entered promiscuous mode [ 18.004602][ T479] br11: port 2(veth2.11) entered blocking state [ 18.004934][ T479] br11: port 2(veth2.11) entered disabled state [ 18.005791][ T479] veth2.11: entered allmulticast mode [ 18.007715][ T479] veth2.11: entered promiscuous mode [ 18.385913][ T491] br10: port 2(veth2.10) entered blocking state [ 18.386428][ T491] br10: port 2(veth2.10) entered forwarding state [ 18.387195][ T491] br10: port 1(veth1.10) entered blocking state [ 18.387457][ T491] br10: port 1(veth1.10) entered forwarding state [ 18.508501][ T496] br11: port 2(veth2.11) entered blocking state [ 18.508811][ T496] br11: port 2(veth2.11) entered forwarding state [ 18.509289][ T496] br11: port 1(veth1.11) entered blocking state [ 18.509621][ T496] br11: port 1(veth1.11) entered forwarding state [ 27.431070][ T551] [ 27.431380][ T551] ============================= [ 27.431600][ T551] WARNING: suspicious RCU usage [ 27.431804][ T551] 6.14.0-rc6-virtme #1 Not tainted [ 27.432052][ T551] ----------------------------- [ 27.432260][ T551] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 27.432647][ T551] [ 27.432647][ T551] other info that might help us debug this: [ 27.432647][ T551] [ 27.433038][ T551] [ 27.433038][ T551] rcu_scheduler_active = 2, debug_locks = 1 [ 27.433355][ T551] 1 lock held by mausezahn/551: [ 27.433561][ T551] #0: ffffffffad75b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 27.433919][ T551] [ 27.433919][ T551] stack backtrace: [ 27.434188][ T551] CPU: 2 UID: 0 PID: 551 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 27.434192][ T551] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.434194][ T551] Call Trace: [ 27.434196][ T551] [ 27.434198][ T551] dump_stack_lvl+0xb0/0xd0 [ 27.434206][ T551] lockdep_rcu_suspicious+0x1ea/0x280 [ 27.434217][ T551] dev_hard_start_xmit+0x2fc/0x3f0 [ 27.434227][ T551] __dev_queue_xmit+0xfaf/0x18d0 [ 27.434232][ T551] ? __pfx__copy_from_iter+0x10/0x10 [ 27.434241][ T551] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 27.434254][ T551] ? __pfx___dev_queue_xmit+0x10/0x10 [ 27.434258][ T551] ? packet_parse_headers+0x231/0x9c0 [ 27.434266][ T551] ? copy_page_from_iter+0xbd/0x120 [ 27.434271][ T551] ? __pfx_packet_parse_headers+0x10/0x10 [ 27.434275][ T551] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 27.434289][ T551] packet_snd+0xd0c/0x19d0 [ 27.434300][ T551] ? __lock_release+0x103/0x460 [ 27.434304][ T551] ? __might_fault+0x11b/0x170 [ 27.434310][ T551] ? __pfx_packet_snd+0x10/0x10 [ 27.434313][ T551] ? trace_lock_acquire+0x14c/0x1f0 [ 27.434315][ T551] ? __might_fault+0x11b/0x170 [ 27.434322][ T551] ? lock_acquire+0x32/0xc0 [ 27.434328][ T551] ? __might_fault+0x11b/0x170 [ 27.434339][ T551] __sys_sendto+0x3c3/0x450 [ 27.434344][ T551] ? __pfx___sys_sendto+0x10/0x10 [ 27.434358][ T551] ? sock_ioctl+0x3b6/0x590 [ 27.434362][ T551] ? __pfx___lock_release+0x10/0x10 [ 27.434370][ T551] ? __pfx___up_read+0x10/0x10 [ 27.434378][ T551] ? do_user_addr_fault+0x972/0xe30 [ 27.434387][ T551] ? do_user_addr_fault+0x97c/0xe30 [ 27.434394][ T551] __x64_sys_sendto+0xe0/0x1c0 [ 27.434397][ T551] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 27.434402][ T551] do_syscall_64+0xc1/0x1d0 [ 27.434410][ T551] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 27.434414][ T551] RIP: 0033:0x7efdcf67ba4a [ 27.434418][ T551] 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 [ 27.434421][ T551] RSP: 002b:00007ffdde0cca98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 27.434425][ T551] RAX: ffffffffffffffda RBX: 000000001b9da9d0 RCX: 00007efdcf67ba4a [ 27.434427][ T551] RDX: 0000000000001f6a RSI: 000000001b9dd8e2 RDI: 0000000000000005 [ 27.434428][ T551] RBP: 000000001b9dd8e2 R08: 00007ffdde0ccaa0 R09: 0000000000000014 [ 27.434430][ T551] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 27.434432][ T551] R13: 0000000000001f6a R14: 00007ffdde0ccaa0 R15: 0000000000000000 [ 27.434448][ T551] [ 98.716940][ T840] br11: port 2(veth2.11) entered disabled state [ 98.718259][ T840] br11: port 1(veth1.11) entered disabled state [ 98.815569][ T842] br10: port 2(veth2.10) entered disabled state [ 98.816198][ T842] br10: port 1(veth1.10) entered disabled state [ 99.007398][ T846] veth2.11: left allmulticast mode [ 99.007721][ T846] veth2.11: left promiscuous mode [ 99.008274][ T846] br11: port 2(veth2.11) entered disabled state [ 99.342316][ T854] veth2.10: left allmulticast mode [ 99.342550][ T854] veth2: left allmulticast mode [ 99.342755][ T854] veth2.10: left promiscuous mode [ 99.342942][ T854] veth2: left promiscuous mode [ 99.344921][ T854] br10: port 2(veth2.10) entered disabled state [ 99.865909][ T864] veth1.11: left allmulticast mode [ 99.866159][ T864] veth1.11: left promiscuous mode [ 99.866655][ T864] br11: port 1(veth1.11) entered disabled state [ 100.184181][ T870] veth1.10: left allmulticast mode [ 100.184425][ T870] veth1: left allmulticast mode [ 100.184626][ T870] veth1.10: left promiscuous mode [ 100.184807][ T870] veth1: left promiscuous mode [ 100.185311][ T870] br10: port 1(veth1.10) entered disabled state