[ 11.203052][ T251] ip (251) used greatest stack depth: 23464 bytes left [ 13.391283][ T305] 8021q: 802.1Q VLAN Support v1.8 [ 18.333395][ T435] br10: port 1(veth1.10) entered blocking state [ 18.333879][ T435] br10: port 1(veth1.10) entered disabled state [ 18.335205][ T435] veth1.10: entered allmulticast mode [ 18.335425][ T435] veth1: entered allmulticast mode [ 18.337417][ T435] veth1.10: entered promiscuous mode [ 18.337632][ T435] veth1: entered promiscuous mode [ 18.460191][ T440] br10: port 2(veth2.10) entered blocking state [ 18.460464][ T440] br10: port 2(veth2.10) entered disabled state [ 18.460722][ T440] veth2.10: entered allmulticast mode [ 18.460896][ T440] veth2: entered allmulticast mode [ 18.462854][ T440] veth2.10: entered promiscuous mode [ 18.463044][ T440] veth2: entered promiscuous mode [ 18.588821][ T445] br10: port 2(veth2.10) entered blocking state [ 18.589290][ T445] br10: port 2(veth2.10) entered forwarding state [ 18.590000][ T445] br10: port 1(veth1.10) entered blocking state [ 18.590281][ T445] br10: port 1(veth1.10) entered forwarding state [ 19.640084][ T481] br11: port 1(veth1.11) entered blocking state [ 19.640613][ T481] br11: port 1(veth1.11) entered disabled state [ 19.640903][ T481] veth1.11: entered allmulticast mode [ 19.642835][ T481] veth1.11: entered promiscuous mode [ 19.786621][ T486] br11: port 2(veth2.11) entered blocking state [ 19.787018][ T486] br11: port 2(veth2.11) entered disabled state [ 19.787320][ T486] veth2.11: entered allmulticast mode [ 19.789277][ T486] veth2.11: entered promiscuous mode [ 19.893977][ T491] br11: port 2(veth2.11) entered blocking state [ 19.894358][ T491] br11: port 2(veth2.11) entered forwarding state [ 19.895153][ T491] br11: port 1(veth1.11) entered blocking state [ 19.895411][ T491] br11: port 1(veth1.11) entered forwarding state [ 20.986276][ T527] br12: port 1(veth1.12) entered blocking state [ 20.986575][ T527] br12: port 1(veth1.12) entered disabled state [ 20.986862][ T527] veth1.12: entered allmulticast mode [ 20.989126][ T527] veth1.12: entered promiscuous mode [ 21.101937][ T532] br12: port 2(veth2.12) entered blocking state [ 21.102912][ T532] br12: port 2(veth2.12) entered disabled state [ 21.103271][ T532] veth2.12: entered allmulticast mode [ 21.105179][ T532] veth2.12: entered promiscuous mode [ 21.248319][ T537] br12: port 2(veth2.12) entered blocking state [ 21.248796][ T537] br12: port 2(veth2.12) entered forwarding state [ 21.249596][ T537] br12: port 1(veth1.12) entered blocking state [ 21.250038][ T537] br12: port 1(veth1.12) entered forwarding state [ 32.096483][ T628] [ 32.096808][ T628] ============================= [ 32.097008][ T628] WARNING: suspicious RCU usage [ 32.097232][ T628] 6.14.0-rc6-virtme #1 Not tainted [ 32.097474][ T628] ----------------------------- [ 32.097648][ T628] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 32.097911][ T628] [ 32.097911][ T628] other info that might help us debug this: [ 32.097911][ T628] [ 32.098243][ T628] [ 32.098243][ T628] rcu_scheduler_active = 2, debug_locks = 1 [ 32.098480][ T628] 1 lock held by mausezahn/628: [ 32.098637][ T628] #0: ffffffffac95b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 32.098924][ T628] [ 32.098924][ T628] stack backtrace: [ 32.099218][ T628] CPU: 3 UID: 0 PID: 628 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 32.099223][ T628] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 32.099225][ T628] Call Trace: [ 32.099227][ T628] [ 32.099230][ T628] dump_stack_lvl+0xb0/0xd0 [ 32.099239][ T628] lockdep_rcu_suspicious+0x1ea/0x280 [ 32.099251][ T628] dev_hard_start_xmit+0x2fc/0x3f0 [ 32.099262][ T628] __dev_queue_xmit+0xfaf/0x18d0 [ 32.099267][ T628] ? __pfx__copy_from_iter+0x10/0x10 [ 32.099277][ T628] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 32.099290][ T628] ? __pfx___dev_queue_xmit+0x10/0x10 [ 32.099295][ T628] ? packet_parse_headers+0x231/0x9c0 [ 32.099303][ T628] ? copy_page_from_iter+0xbd/0x120 [ 32.099308][ T628] ? __pfx_packet_parse_headers+0x10/0x10 [ 32.099313][ T628] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 32.099329][ T628] packet_snd+0xd0c/0x19d0 [ 32.099340][ T628] ? __lock_release+0x103/0x460 [ 32.099345][ T628] ? __might_fault+0x11b/0x170 [ 32.099353][ T628] ? __pfx_packet_snd+0x10/0x10 [ 32.099355][ T628] ? trace_lock_acquire+0x14c/0x1f0 [ 32.099357][ T628] ? __might_fault+0x11b/0x170 [ 32.099364][ T628] ? lock_acquire+0x32/0xc0 [ 32.099371][ T628] ? __might_fault+0x11b/0x170 [ 32.099382][ T628] __sys_sendto+0x3c3/0x450 [ 32.099388][ T628] ? __pfx___sys_sendto+0x10/0x10 [ 32.099402][ T628] ? sock_ioctl+0x3b6/0x590 [ 32.099406][ T628] ? __pfx___lock_release+0x10/0x10 [ 32.099413][ T628] ? __pfx___up_read+0x10/0x10 [ 32.099422][ T628] ? do_user_addr_fault+0x972/0xe30 [ 32.099432][ T628] ? do_user_addr_fault+0x97c/0xe30 [ 32.099439][ T628] __x64_sys_sendto+0xe0/0x1c0 [ 32.099443][ T628] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 32.099448][ T628] do_syscall_64+0xc1/0x1d0 [ 32.099456][ T628] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 32.099462][ T628] RIP: 0033:0x7fb05a20da4a [ 32.099467][ T628] 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 [ 32.099469][ T628] RSP: 002b:00007ffd23759b98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 32.099473][ T628] RAX: ffffffffffffffda RBX: 0000000010cd99d0 RCX: 00007fb05a20da4a [ 32.099475][ T628] RDX: 0000000000001f6a RSI: 0000000010cdc8e2 RDI: 0000000000000005 [ 32.099477][ T628] RBP: 0000000010cdc8e2 R08: 00007ffd23759ba0 R09: 0000000000000014 [ 32.099479][ T628] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 32.099481][ T628] R13: 0000000000001f6a R14: 00007ffd23759ba0 R15: 0000000000000000 [ 32.099496][ T628] [ 428.783429][ T1967] br12: port 2(veth2.12) entered disabled state [ 428.868837][ T1969] br12: port 1(veth1.12) entered disabled state [ 429.065531][ T1973] veth2.12: left allmulticast mode [ 429.065770][ T1973] veth2.12: left promiscuous mode [ 429.066320][ T1973] br12: port 2(veth2.12) entered disabled state [ 429.157463][ T1975] veth1.12: left allmulticast mode [ 429.157718][ T1975] veth1.12: left promiscuous mode [ 429.158638][ T1975] br12: port 1(veth1.12) entered disabled state [ 429.660857][ T1985] br11: port 2(veth2.11) entered disabled state [ 429.750760][ T1987] br11: port 1(veth1.11) entered disabled state [ 429.923565][ T1991] veth2.11: left allmulticast mode [ 429.923792][ T1991] veth2.11: left promiscuous mode [ 429.924293][ T1991] br11: port 2(veth2.11) entered disabled state [ 430.012862][ T1993] veth1.11: left allmulticast mode [ 430.013146][ T1993] veth1.11: left promiscuous mode [ 430.013646][ T1993] br11: port 1(veth1.11) entered disabled state [ 430.509367][ T2001] br10: port 2(veth2.10) entered disabled state [ 430.605819][ T2003] br10: port 1(veth1.10) entered disabled state [ 430.787051][ T2007] veth2.10: left allmulticast mode [ 430.787357][ T2007] veth2: left allmulticast mode [ 430.787589][ T2007] veth2.10: left promiscuous mode [ 430.787823][ T2007] veth2: left promiscuous mode [ 430.788360][ T2007] br10: port 2(veth2.10) entered disabled state [ 430.872651][ T2009] veth1.10: left allmulticast mode [ 430.872873][ T2009] veth1: left allmulticast mode [ 430.873067][ T2009] veth1.10: left promiscuous mode [ 430.873254][ T2009] veth1: left promiscuous mode [ 430.873742][ T2009] br10: port 1(veth1.10) entered disabled state