[ 11.951165][ T250] ip (250) used greatest stack depth: 23296 bytes left [ 14.231728][ T304] 8021q: 802.1Q VLAN Support v1.8 [ 19.496364][ T433] br10: port 1(veth1.10) entered blocking state [ 19.496883][ T433] br10: port 1(veth1.10) entered disabled state [ 19.497790][ T433] veth1.10: entered allmulticast mode [ 19.497993][ T433] veth1: entered allmulticast mode [ 19.500106][ T433] veth1.10: entered promiscuous mode [ 19.500338][ T433] veth1: entered promiscuous mode [ 19.653733][ T438] br10: port 2(veth2.10) entered blocking state [ 19.654059][ T438] br10: port 2(veth2.10) entered disabled state [ 19.654409][ T438] veth2.10: entered allmulticast mode [ 19.654683][ T438] veth2: entered allmulticast mode [ 19.656861][ T438] veth2.10: entered promiscuous mode [ 19.657095][ T438] veth2: entered promiscuous mode [ 19.806727][ T443] br10: port 2(veth2.10) entered blocking state [ 19.807227][ T443] br10: port 2(veth2.10) entered forwarding state [ 19.808235][ T443] br10: port 1(veth1.10) entered blocking state [ 19.808606][ T443] br10: port 1(veth1.10) entered forwarding state [ 21.023611][ T479] br11: port 1(veth1.11) entered blocking state [ 21.023960][ T479] br11: port 1(veth1.11) entered disabled state [ 21.024292][ T479] veth1.11: entered allmulticast mode [ 21.026277][ T479] veth1.11: entered promiscuous mode [ 21.166266][ T484] br11: port 2(veth2.11) entered blocking state [ 21.166610][ T484] br11: port 2(veth2.11) entered disabled state [ 21.166929][ T484] veth2.11: entered allmulticast mode [ 21.169529][ T484] veth2.11: entered promiscuous mode [ 21.292093][ T489] br11: port 2(veth2.11) entered blocking state [ 21.292426][ T489] br11: port 2(veth2.11) entered forwarding state [ 21.292900][ T489] br11: port 1(veth1.11) entered blocking state [ 21.293166][ T489] br11: port 1(veth1.11) entered forwarding state [ 22.420047][ T525] br12: port 1(veth1.12) entered blocking state [ 22.420410][ T525] br12: port 1(veth1.12) entered disabled state [ 22.420759][ T525] veth1.12: entered allmulticast mode [ 22.423265][ T525] veth1.12: entered promiscuous mode [ 22.563073][ T530] br12: port 2(veth2.12) entered blocking state [ 22.563402][ T530] br12: port 2(veth2.12) entered disabled state [ 22.563683][ T530] veth2.12: entered allmulticast mode [ 22.565662][ T530] veth2.12: entered promiscuous mode [ 22.715926][ T535] br12: port 2(veth2.12) entered blocking state [ 22.716338][ T535] br12: port 2(veth2.12) entered forwarding state [ 22.716870][ T535] br12: port 1(veth1.12) entered blocking state [ 22.717171][ T535] br12: port 1(veth1.12) entered forwarding state [ 33.488348][ T626] [ 33.488619][ T626] ============================= [ 33.488777][ T626] WARNING: suspicious RCU usage [ 33.488928][ T626] 6.14.0-rc6-virtme #1 Not tainted [ 33.489086][ T626] ----------------------------- [ 33.489269][ T626] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 33.489540][ T626] [ 33.489540][ T626] other info that might help us debug this: [ 33.489540][ T626] [ 33.489839][ T626] [ 33.489839][ T626] rcu_scheduler_active = 2, debug_locks = 1 [ 33.490065][ T626] 1 lock held by mausezahn/626: [ 33.490245][ T626] #0: ffffffffb895b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 33.490530][ T626] [ 33.490530][ T626] stack backtrace: [ 33.490715][ T626] CPU: 0 UID: 0 PID: 626 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 33.490719][ T626] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 33.490721][ T626] Call Trace: [ 33.490723][ T626] [ 33.490726][ T626] dump_stack_lvl+0xb0/0xd0 [ 33.490733][ T626] lockdep_rcu_suspicious+0x1ea/0x280 [ 33.490743][ T626] dev_hard_start_xmit+0x2fc/0x3f0 [ 33.490753][ T626] __dev_queue_xmit+0xfaf/0x18d0 [ 33.490758][ T626] ? __pfx__copy_from_iter+0x10/0x10 [ 33.490767][ T626] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 33.490779][ T626] ? __pfx___dev_queue_xmit+0x10/0x10 [ 33.490783][ T626] ? packet_parse_headers+0x231/0x9c0 [ 33.490791][ T626] ? copy_page_from_iter+0xbd/0x120 [ 33.490796][ T626] ? __pfx_packet_parse_headers+0x10/0x10 [ 33.490800][ T626] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 33.490814][ T626] packet_snd+0xd0c/0x19d0 [ 33.490826][ T626] ? __lock_release+0x103/0x460 [ 33.490830][ T626] ? __might_fault+0x11b/0x170 [ 33.490836][ T626] ? __pfx_packet_snd+0x10/0x10 [ 33.490838][ T626] ? trace_lock_acquire+0x14c/0x1f0 [ 33.490841][ T626] ? __might_fault+0x11b/0x170 [ 33.490847][ T626] ? lock_acquire+0x32/0xc0 [ 33.490853][ T626] ? __might_fault+0x11b/0x170 [ 33.490864][ T626] __sys_sendto+0x3c3/0x450 [ 33.490870][ T626] ? __pfx___sys_sendto+0x10/0x10 [ 33.490884][ T626] ? sock_ioctl+0x3b6/0x590 [ 33.490887][ T626] ? __pfx___lock_release+0x10/0x10 [ 33.490895][ T626] ? __pfx___up_read+0x10/0x10 [ 33.490903][ T626] ? do_user_addr_fault+0x972/0xe30 [ 33.490912][ T626] ? do_user_addr_fault+0x97c/0xe30 [ 33.490919][ T626] __x64_sys_sendto+0xe0/0x1c0 [ 33.490922][ T626] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 33.490928][ T626] do_syscall_64+0xc1/0x1d0 [ 33.490935][ T626] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 33.490940][ T626] RIP: 0033:0x7f2d90d7da4a [ 33.490944][ T626] 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 [ 33.490946][ T626] RSP: 002b:00007fff7ff4a1c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 33.490950][ T626] RAX: ffffffffffffffda RBX: 00000000184549d0 RCX: 00007f2d90d7da4a [ 33.490952][ T626] RDX: 0000000000001f6a RSI: 00000000184578e2 RDI: 0000000000000005 [ 33.490954][ T626] RBP: 00000000184578e2 R08: 00007fff7ff4a1d0 R09: 0000000000000014 [ 33.490956][ T626] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 33.490957][ T626] R13: 0000000000001f6a R14: 00007fff7ff4a1d0 R15: 0000000000000000 [ 33.490973][ T626] [ 437.113619][ T1965] br12: port 2(veth2.12) entered disabled state [ 437.209926][ T1967] br12: port 1(veth1.12) entered disabled state [ 437.436958][ T1971] veth2.12: left allmulticast mode [ 437.437246][ T1971] veth2.12: left promiscuous mode [ 437.437922][ T1971] br12: port 2(veth2.12) entered disabled state [ 437.544989][ T1973] veth1.12: left allmulticast mode [ 437.545311][ T1973] veth1.12: left promiscuous mode [ 437.546231][ T1973] br12: port 1(veth1.12) entered disabled state [ 438.044556][ T1983] br11: port 2(veth2.11) entered disabled state [ 438.134352][ T1985] br11: port 1(veth1.11) entered disabled state [ 438.358833][ T1989] veth2.11: left allmulticast mode [ 438.359120][ T1989] veth2.11: left promiscuous mode [ 438.359750][ T1989] br11: port 2(veth2.11) entered disabled state [ 438.445868][ T1991] veth1.11: left allmulticast mode [ 438.447422][ T1991] veth1.11: left promiscuous mode [ 438.448031][ T1991] br11: port 1(veth1.11) entered disabled state [ 439.060781][ T1999] br10: port 2(veth2.10) entered disabled state [ 439.164206][ T2001] br10: port 1(veth1.10) entered disabled state [ 439.396957][ T2005] veth2.10: left allmulticast mode [ 439.397236][ T2005] veth2: left allmulticast mode [ 439.397450][ T2005] veth2.10: left promiscuous mode [ 439.397638][ T2005] veth2: left promiscuous mode [ 439.398177][ T2005] br10: port 2(veth2.10) entered disabled state [ 439.487680][ T2007] veth1.10: left allmulticast mode [ 439.487956][ T2007] veth1: left allmulticast mode [ 439.488198][ T2007] veth1.10: left promiscuous mode [ 439.488410][ T2007] veth1: left promiscuous mode [ 439.488932][ T2007] br10: port 1(veth1.10) entered disabled state