[ 12.155668][ T252] ip (252) used greatest stack depth: 24088 bytes left [ 14.522557][ T305] 8021q: 802.1Q VLAN Support v1.8 [ 19.996994][ T435] br10: port 1(veth1.10) entered blocking state [ 19.997719][ T435] br10: port 1(veth1.10) entered disabled state [ 19.998927][ T435] veth1.10: entered allmulticast mode [ 19.999286][ T435] veth1: entered allmulticast mode [ 20.002709][ T435] veth1.10: entered promiscuous mode [ 20.003028][ T435] veth1: entered promiscuous mode [ 20.140740][ T440] br10: port 2(veth2.10) entered blocking state [ 20.141108][ T440] br10: port 2(veth2.10) entered disabled state [ 20.141397][ T440] veth2.10: entered allmulticast mode [ 20.141579][ T440] veth2: entered allmulticast mode [ 20.143623][ T440] veth2.10: entered promiscuous mode [ 20.143819][ T440] veth2: entered promiscuous mode [ 20.272904][ T445] br10: port 2(veth2.10) entered blocking state [ 20.273355][ T445] br10: port 2(veth2.10) entered forwarding state [ 20.274112][ T445] br10: port 1(veth1.10) entered blocking state [ 20.274377][ T445] br10: port 1(veth1.10) entered forwarding state [ 21.445797][ T481] br11: port 1(veth1.11) entered blocking state [ 21.446098][ T481] br11: port 1(veth1.11) entered disabled state [ 21.446412][ T481] veth1.11: entered allmulticast mode [ 21.448608][ T481] veth1.11: entered promiscuous mode [ 21.596964][ T486] br11: port 2(veth2.11) entered blocking state [ 21.597388][ T486] br11: port 2(veth2.11) entered disabled state [ 21.597757][ T486] veth2.11: entered allmulticast mode [ 21.600206][ T486] veth2.11: entered promiscuous mode [ 21.735935][ T491] br11: port 2(veth2.11) entered blocking state [ 21.736411][ T491] br11: port 2(veth2.11) entered forwarding state [ 21.737036][ T491] br11: port 1(veth1.11) entered blocking state [ 21.737455][ T491] br11: port 1(veth1.11) entered forwarding state [ 22.941023][ T527] br12: port 1(veth1.12) entered blocking state [ 22.941775][ T527] br12: port 1(veth1.12) entered disabled state [ 22.942072][ T527] veth1.12: entered allmulticast mode [ 22.944015][ T527] veth1.12: entered promiscuous mode [ 23.097453][ T532] br12: port 2(veth2.12) entered blocking state [ 23.097770][ T532] br12: port 2(veth2.12) entered disabled state [ 23.098051][ T532] veth2.12: entered allmulticast mode [ 23.100297][ T532] veth2.12: entered promiscuous mode [ 23.223836][ T537] br12: port 2(veth2.12) entered blocking state [ 23.224452][ T537] br12: port 2(veth2.12) entered forwarding state [ 23.224977][ T537] br12: port 1(veth1.12) entered blocking state [ 23.225286][ T537] br12: port 1(veth1.12) entered forwarding state [ 34.160278][ T628] [ 34.160601][ T628] ============================= [ 34.160781][ T628] WARNING: suspicious RCU usage [ 34.160957][ T628] 6.14.0-rc6-virtme #1 Not tainted [ 34.161133][ T628] ----------------------------- [ 34.161312][ T628] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 34.161617][ T628] [ 34.161617][ T628] other info that might help us debug this: [ 34.161617][ T628] [ 34.161932][ T628] [ 34.161932][ T628] rcu_scheduler_active = 2, debug_locks = 1 [ 34.162174][ T628] 1 lock held by mausezahn/628: [ 34.162370][ T628] #0: ffffffffb0b5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 34.162695][ T628] [ 34.162695][ T628] stack backtrace: [ 34.162909][ T628] CPU: 3 UID: 0 PID: 628 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 34.162914][ T628] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 34.162916][ T628] Call Trace: [ 34.162918][ T628] [ 34.162921][ T628] dump_stack_lvl+0xb0/0xd0 [ 34.162928][ T628] lockdep_rcu_suspicious+0x1ea/0x280 [ 34.162939][ T628] dev_hard_start_xmit+0x2fc/0x3f0 [ 34.162949][ T628] __dev_queue_xmit+0xfaf/0x18d0 [ 34.162955][ T628] ? __pfx__copy_from_iter+0x10/0x10 [ 34.162964][ T628] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 34.162977][ T628] ? __pfx___dev_queue_xmit+0x10/0x10 [ 34.162981][ T628] ? packet_parse_headers+0x231/0x9c0 [ 34.162989][ T628] ? copy_page_from_iter+0xbd/0x120 [ 34.162994][ T628] ? __pfx_packet_parse_headers+0x10/0x10 [ 34.162998][ T628] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 34.163012][ T628] packet_snd+0xd0c/0x19d0 [ 34.163024][ T628] ? __lock_release+0x103/0x460 [ 34.163027][ T628] ? __might_fault+0x11b/0x170 [ 34.163034][ T628] ? __pfx_packet_snd+0x10/0x10 [ 34.163036][ T628] ? trace_lock_acquire+0x14c/0x1f0 [ 34.163038][ T628] ? __might_fault+0x11b/0x170 [ 34.163045][ T628] ? lock_acquire+0x32/0xc0 [ 34.163051][ T628] ? __might_fault+0x11b/0x170 [ 34.163062][ T628] __sys_sendto+0x3c3/0x450 [ 34.163068][ T628] ? __pfx___sys_sendto+0x10/0x10 [ 34.163082][ T628] ? sock_ioctl+0x3b6/0x590 [ 34.163086][ T628] ? __pfx___lock_release+0x10/0x10 [ 34.163094][ T628] ? __pfx___up_read+0x10/0x10 [ 34.163102][ T628] ? do_user_addr_fault+0x972/0xe30 [ 34.163110][ T628] ? do_user_addr_fault+0x97c/0xe30 [ 34.163117][ T628] __x64_sys_sendto+0xe0/0x1c0 [ 34.163121][ T628] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 34.163126][ T628] do_syscall_64+0xc1/0x1d0 [ 34.163133][ T628] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.163138][ T628] RIP: 0033:0x7f94b59d9a4a [ 34.163142][ 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 [ 34.163145][ T628] RSP: 002b:00007ffff7c601b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 34.163148][ T628] RAX: ffffffffffffffda RBX: 00000000196de9d0 RCX: 00007f94b59d9a4a [ 34.163150][ T628] RDX: 0000000000001f6a RSI: 00000000196e18e2 RDI: 0000000000000005 [ 34.163152][ T628] RBP: 00000000196e18e2 R08: 00007ffff7c601c0 R09: 0000000000000014 [ 34.163154][ T628] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 34.163155][ T628] R13: 0000000000001f6a R14: 00007ffff7c601c0 R15: 0000000000000000 [ 34.163171][ T628] [ 439.577900][ T1969] br12: port 2(veth2.12) entered disabled state [ 439.672801][ T1971] br12: port 1(veth1.12) entered disabled state [ 439.889705][ T1975] veth2.12: left allmulticast mode [ 439.890069][ T1975] veth2.12: left promiscuous mode [ 439.891105][ T1975] br12: port 2(veth2.12) entered disabled state [ 440.025253][ T1977] veth1.12: left allmulticast mode [ 440.025596][ T1977] veth1.12: left promiscuous mode [ 440.026381][ T1977] br12: port 1(veth1.12) entered disabled state [ 440.599757][ T1987] br11: port 2(veth2.11) entered disabled state [ 440.705320][ T1989] br11: port 1(veth1.11) entered disabled state [ 440.918951][ T1993] veth2.11: left allmulticast mode [ 440.919182][ T1993] veth2.11: left promiscuous mode [ 440.919688][ T1993] br11: port 2(veth2.11) entered disabled state [ 441.021010][ T1995] veth1.11: left allmulticast mode [ 441.021285][ T1995] veth1.11: left promiscuous mode [ 441.021887][ T1995] br11: port 1(veth1.11) entered disabled state [ 441.542713][ T2003] br10: port 2(veth2.10) entered disabled state [ 441.637402][ T2005] br10: port 1(veth1.10) entered disabled state [ 441.826807][ T2009] veth2.10: left allmulticast mode [ 441.827099][ T2009] veth2: left allmulticast mode [ 441.827341][ T2009] veth2.10: left promiscuous mode [ 441.827530][ T2009] veth2: left promiscuous mode [ 441.828452][ T2009] br10: port 2(veth2.10) entered disabled state [ 441.941814][ T2011] veth1.10: left allmulticast mode [ 441.942096][ T2011] veth1: left allmulticast mode [ 441.942338][ T2011] veth1.10: left promiscuous mode [ 441.942538][ T2011] veth1: left promiscuous mode [ 441.943084][ T2011] br10: port 1(veth1.10) entered disabled state [ 442.937528][ T2027] ip (2027) used greatest stack depth: 23552 bytes left