[ 11.117202][ T252] ip (252) used greatest stack depth: 23744 bytes left [ 13.586837][ T311] 8021q: 802.1Q VLAN Support v1.8 [ 16.860944][ T381] GACT probability NOT on [ 18.223206][ T417] br10: port 1(veth1.10) entered blocking state [ 18.224246][ T417] br10: port 1(veth1.10) entered disabled state [ 18.224680][ T417] veth1.10: entered allmulticast mode [ 18.224897][ T417] veth1: entered allmulticast mode [ 18.227221][ T417] veth1.10: entered promiscuous mode [ 18.227958][ T417] veth1: entered promiscuous mode [ 18.726116][ T434] br11: port 1(veth1.11) entered blocking state [ 18.726428][ T434] br11: port 1(veth1.11) entered disabled state [ 18.726723][ T434] veth1.11: entered allmulticast mode [ 18.736874][ T434] veth1.11: entered promiscuous mode [ 19.571667][ T464] br10: port 2(veth2.10) entered blocking state [ 19.571984][ T464] br10: port 2(veth2.10) entered disabled state [ 19.572292][ T464] veth2.10: entered allmulticast mode [ 19.572487][ T464] veth2: entered allmulticast mode [ 19.574416][ T464] veth2.10: entered promiscuous mode [ 19.574623][ T464] veth2: entered promiscuous mode [ 20.055823][ T481] br11: port 2(veth2.11) entered blocking state [ 20.056273][ T481] br11: port 2(veth2.11) entered disabled state [ 20.056563][ T481] veth2.11: entered allmulticast mode [ 20.058560][ T481] veth2.11: entered promiscuous mode [ 20.501423][ T493] br10: port 2(veth2.10) entered blocking state [ 20.501863][ T493] br10: port 2(veth2.10) entered forwarding state [ 20.502605][ T493] br10: port 1(veth1.10) entered blocking state [ 20.502868][ T493] br10: port 1(veth1.10) entered forwarding state [ 20.620526][ T498] br11: port 2(veth2.11) entered blocking state [ 20.620830][ T498] br11: port 2(veth2.11) entered forwarding state [ 20.621314][ T498] br11: port 1(veth1.11) entered blocking state [ 20.621561][ T498] br11: port 1(veth1.11) entered forwarding state [ 29.653321][ T552] [ 29.653614][ T552] ============================= [ 29.653793][ T552] WARNING: suspicious RCU usage [ 29.653956][ T552] 6.14.0-rc6-virtme #1 Not tainted [ 29.654112][ T552] ----------------------------- [ 29.654293][ T552] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 29.654593][ T552] [ 29.654593][ T552] other info that might help us debug this: [ 29.654593][ T552] [ 29.654895][ T552] [ 29.654895][ T552] rcu_scheduler_active = 2, debug_locks = 1 [ 29.655138][ T552] 1 lock held by mausezahn/552: [ 29.655309][ T552] #0: ffffffffa2f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 29.655626][ T552] [ 29.655626][ T552] stack backtrace: [ 29.655819][ T552] CPU: 0 UID: 0 PID: 552 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 29.655823][ T552] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.655825][ T552] Call Trace: [ 29.655828][ T552] [ 29.655830][ T552] dump_stack_lvl+0xb0/0xd0 [ 29.655839][ T552] lockdep_rcu_suspicious+0x1ea/0x280 [ 29.655851][ T552] dev_hard_start_xmit+0x2fc/0x3f0 [ 29.655861][ T552] __dev_queue_xmit+0xfaf/0x18d0 [ 29.655867][ T552] ? __pfx__copy_from_iter+0x10/0x10 [ 29.655877][ T552] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 29.655889][ T552] ? __pfx___dev_queue_xmit+0x10/0x10 [ 29.655894][ T552] ? packet_parse_headers+0x231/0x9c0 [ 29.655902][ T552] ? copy_page_from_iter+0xbd/0x120 [ 29.655907][ T552] ? __pfx_packet_parse_headers+0x10/0x10 [ 29.655912][ T552] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 29.655927][ T552] packet_snd+0xd0c/0x19d0 [ 29.655938][ T552] ? __lock_release+0x103/0x460 [ 29.655942][ T552] ? __might_fault+0x11b/0x170 [ 29.655951][ T552] ? __pfx_packet_snd+0x10/0x10 [ 29.655953][ T552] ? trace_lock_acquire+0x14c/0x1f0 [ 29.655956][ T552] ? __might_fault+0x11b/0x170 [ 29.655963][ T552] ? lock_acquire+0x32/0xc0 [ 29.655969][ T552] ? __might_fault+0x11b/0x170 [ 29.655980][ T552] __sys_sendto+0x3c3/0x450 [ 29.655986][ T552] ? __pfx___sys_sendto+0x10/0x10 [ 29.656000][ T552] ? sock_ioctl+0x3b6/0x590 [ 29.656004][ T552] ? __pfx___lock_release+0x10/0x10 [ 29.656012][ T552] ? __pfx___up_read+0x10/0x10 [ 29.656021][ T552] ? do_user_addr_fault+0x972/0xe30 [ 29.656030][ T552] ? do_user_addr_fault+0x97c/0xe30 [ 29.656037][ T552] __x64_sys_sendto+0xe0/0x1c0 [ 29.656040][ T552] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 29.656046][ T552] do_syscall_64+0xc1/0x1d0 [ 29.656054][ T552] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.656060][ T552] RIP: 0033:0x7f7b022eca4a [ 29.656064][ T552] 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 [ 29.656068][ T552] RSP: 002b:00007ffe240eb728 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 29.656072][ T552] RAX: ffffffffffffffda RBX: 0000000018c6c9d0 RCX: 00007f7b022eca4a [ 29.656074][ T552] RDX: 0000000000001f6a RSI: 0000000018c6f8e2 RDI: 0000000000000005 [ 29.656075][ T552] RBP: 0000000018c6f8e2 R08: 00007ffe240eb730 R09: 0000000000000014 [ 29.656078][ T552] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 29.656079][ T552] R13: 0000000000001f6a R14: 00007ffe240eb730 R15: 0000000000000000 [ 29.656095][ T552] [ 101.487285][ T841] br11: port 2(veth2.11) entered disabled state [ 101.488490][ T841] br11: port 1(veth1.11) entered disabled state [ 101.590182][ T843] br10: port 2(veth2.10) entered disabled state [ 101.591101][ T843] br10: port 1(veth1.10) entered disabled state [ 101.790981][ T847] veth2.11: left allmulticast mode [ 101.791226][ T847] veth2.11: left promiscuous mode [ 101.791768][ T847] br11: port 2(veth2.11) entered disabled state [ 102.120711][ T855] veth2.10: left allmulticast mode [ 102.121059][ T855] veth2: left allmulticast mode [ 102.121446][ T855] veth2.10: left promiscuous mode [ 102.121757][ T855] veth2: left promiscuous mode [ 102.122576][ T855] br10: port 2(veth2.10) entered disabled state [ 102.628968][ T865] veth1.11: left allmulticast mode [ 102.629235][ T865] veth1.11: left promiscuous mode [ 102.630955][ T865] br11: port 1(veth1.11) entered disabled state [ 102.936393][ T871] veth1.10: left allmulticast mode [ 102.936622][ T871] veth1: left allmulticast mode [ 102.936819][ T871] veth1.10: left promiscuous mode [ 102.936997][ T871] veth1: left promiscuous mode [ 102.937498][ T871] br10: port 1(veth1.10) entered disabled state