[ 42.612403][ T256] ip (256) used greatest stack depth: 23744 bytes left [ 49.508944][ T299] veth1: entered promiscuous mode [ 49.754459][ T303] veth1: left promiscuous mode [ 51.868534][ T326] veth1: entered promiscuous mode [ 74.687013][ T408] veth1: entered allmulticast mode [ 80.702713][ T423] veth1: left allmulticast mode [ 81.575438][ T438] [ 81.575744][ T438] ============================= [ 81.575924][ T438] WARNING: suspicious RCU usage [ 81.576106][ T438] 6.14.0-rc6-virtme #1 Not tainted [ 81.576293][ T438] ----------------------------- [ 81.576467][ T438] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 81.576740][ T438] [ 81.576740][ T438] other info that might help us debug this: [ 81.576740][ T438] [ 81.577068][ T438] [ 81.577068][ T438] rcu_scheduler_active = 2, debug_locks = 1 [ 81.577331][ T438] 1 lock held by mausezahn/438: [ 81.577510][ T438] #0: ffffffffa055b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 81.577809][ T438] [ 81.577809][ T438] stack backtrace: [ 81.578016][ T438] CPU: 2 UID: 0 PID: 438 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 81.578020][ T438] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 81.578022][ T438] Call Trace: [ 81.578025][ T438] [ 81.578027][ T438] dump_stack_lvl+0xb0/0xd0 [ 81.578036][ T438] lockdep_rcu_suspicious+0x1ea/0x280 [ 81.578047][ T438] dev_hard_start_xmit+0x2fc/0x3f0 [ 81.578058][ T438] __dev_queue_xmit+0xfaf/0x18d0 [ 81.578072][ T438] ? __pfx___dev_queue_xmit+0x10/0x10 [ 81.578076][ T438] ? packet_parse_headers+0x231/0x9c0 [ 81.578086][ T438] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 81.578093][ T438] ? __pfx_packet_parse_headers+0x10/0x10 [ 81.578098][ T438] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 81.578104][ T438] ? dev_get_by_index+0xb2/0x190 [ 81.578116][ T438] packet_snd+0xd0c/0x19d0 [ 81.578128][ T438] ? __lock_release+0x103/0x460 [ 81.578132][ T438] ? __might_fault+0x11b/0x170 [ 81.578140][ T438] ? __pfx_packet_snd+0x10/0x10 [ 81.578142][ T438] ? trace_lock_acquire+0x14c/0x1f0 [ 81.578145][ T438] ? __might_fault+0x11b/0x170 [ 81.578152][ T438] ? lock_acquire+0x32/0xc0 [ 81.578158][ T438] ? __might_fault+0x11b/0x170 [ 81.578169][ T438] __sys_sendto+0x3c3/0x450 [ 81.578176][ T438] ? __pfx___sys_sendto+0x10/0x10 [ 81.578190][ T438] ? sock_ioctl+0x3b6/0x590 [ 81.578195][ T438] ? _copy_to_user+0x5c/0x80 [ 81.578205][ T438] ? __pfx_put_timespec64+0x10/0x10 [ 81.578217][ T438] ? posix_cpu_clock_get+0xe1/0x240 [ 81.578227][ T438] ? __x64_sys_clock_gettime+0x17a/0x200 [ 81.578232][ T438] ? __pfx___x64_sys_clock_gettime+0x10/0x10 [ 81.578239][ T438] __x64_sys_sendto+0xe0/0x1c0 [ 81.578244][ T438] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 81.578249][ T438] do_syscall_64+0xc1/0x1d0 [ 81.578258][ T438] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 81.578265][ T438] RIP: 0033:0x7f81e04efa4a [ 81.578269][ T438] 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 [ 81.578272][ T438] RSP: 002b:00007ffec1a28188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 81.578276][ T438] RAX: ffffffffffffffda RBX: 000000000de149d0 RCX: 00007f81e04efa4a [ 81.578278][ T438] RDX: 000000000000003a RSI: 000000000de14c02 RDI: 0000000000000005 [ 81.578280][ T438] RBP: 000000000de14c02 R08: 00007ffec1a28190 R09: 0000000000000014 [ 81.578282][ T438] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 81.578284][ T438] R13: 000000000000003a R14: 00007ffec1a28190 R15: 0000000000000000 [ 81.578300][ T438] [ 95.105769][ T587] veth1: left promiscuous mode [ 97.873175][ T626] br0: port 1(veth1) entered blocking state [ 97.873624][ T626] br0: port 1(veth1) entered disabled state [ 97.874004][ T626] veth1: entered allmulticast mode [ 97.876140][ T626] veth1: entered promiscuous mode [ 97.975550][ T151] br0: port 1(veth1) entered blocking state [ 97.976342][ T151] br0: port 1(veth1) entered forwarding state [ 98.439723][ T633] br0: port 1(veth1) entered disabled state [ 98.442341][ T633] br0: port 1(veth1) entered blocking state [ 98.442619][ T633] br0: port 1(veth1) entered forwarding state [ 98.991840][ T640] br0: entered promiscuous mode [ 121.921478][ T722] br0: entered allmulticast mode [ 128.006261][ T737] br0: left allmulticast mode [ 133.519177][ T805] br0: left promiscuous mode [ 133.832862][ T810] br0: port 1(veth1) entered disabled state [ 134.335772][ T815] veth1: left allmulticast mode [ 134.336164][ T815] veth1: left promiscuous mode [ 134.337245][ T815] br0: port 1(veth1) entered disabled state [ 136.437467][ T844] br0: port 1(veth1) entered blocking state [ 136.437807][ T844] br0: port 1(veth1) entered disabled state [ 136.438132][ T844] veth1: entered allmulticast mode [ 136.441377][ T844] veth1: entered promiscuous mode [ 136.442633][ T844] br0: port 1(veth1) entered blocking state [ 136.443004][ T844] br0: port 1(veth1) entered forwarding state [ 137.068297][ T851] br0: port 1(veth1) entered disabled state [ 137.083694][ T851] br0: port 1(veth1) entered blocking state [ 137.084251][ T851] br0: port 1(veth1) entered forwarding state [ 137.732890][ T858] br0: entered promiscuous mode [ 160.892727][ T941] br0: entered allmulticast mode [ 166.960482][ T956] br0: left allmulticast mode [ 172.663493][ T1024] br0: left promiscuous mode [ 172.988735][ T1029] br0: port 1(veth1) entered disabled state [ 173.513144][ T1034] veth1: left allmulticast mode [ 173.513508][ T1034] veth1: left promiscuous mode [ 173.513888][ T1034] br0: port 1(veth1) entered disabled state [ 174.989315][ T1060] veth1: entered promiscuous mode [ 175.214476][ T1064] veth1: left promiscuous mode [ 175.962568][ T1073] 8021q: 802.1Q VLAN Support v1.8 [ 177.826551][ T1096] veth1: entered promiscuous mode [ 191.397032][ T1136] veth1.100: entered promiscuous mode [ 197.429092][ T1151] veth1.100: left promiscuous mode [ 200.887161][ T1178] veth1.100: entered allmulticast mode [ 200.887855][ T1178] veth1: entered allmulticast mode [ 206.822426][ T1193] veth1.100: left allmulticast mode [ 206.822689][ T1193] veth1: left allmulticast mode [ 221.563160][ T1357] veth1: left promiscuous mode [ 223.507393][ T1390] veth1: entered promiscuous mode [ 223.751593][ T1394] veth1: left promiscuous mode [ 226.212667][ T1425] br0: port 1(veth1) entered blocking state [ 226.213041][ T1425] br0: port 1(veth1) entered disabled state [ 226.213372][ T1425] veth1: entered allmulticast mode [ 226.215301][ T1425] veth1: entered promiscuous mode [ 226.216751][ T1425] br0: port 1(veth1) entered blocking state [ 226.217064][ T1425] br0: port 1(veth1) entered forwarding state [ 240.139543][ T1471] veth1.100: entered promiscuous mode [ 246.238989][ T1486] veth1.100: left promiscuous mode [ 249.638520][ T1513] veth1.100: entered allmulticast mode [ 255.739963][ T1528] veth1.100: left allmulticast mode [ 271.178425][ T1693] veth1: left allmulticast mode [ 271.178716][ T1693] veth1: left promiscuous mode [ 271.179057][ T1693] br0: port 1(veth1) entered disabled state [ 273.134515][ T1726] veth1: entered promiscuous mode [ 273.333328][ T1730] veth1: left promiscuous mode [ 275.929102][ T1761] br0: port 1(veth1) entered blocking state [ 275.929477][ T1761] br0: port 1(veth1) entered disabled state [ 275.929764][ T1761] veth1: entered allmulticast mode [ 275.931722][ T1761] veth1: entered promiscuous mode [ 275.932980][ T1761] br0: port 1(veth1) entered blocking state [ 275.933316][ T1761] br0: port 1(veth1) entered forwarding state [ 289.964108][ T1806] veth1.100: entered promiscuous mode [ 296.010041][ T1821] veth1.100: left promiscuous mode [ 299.487929][ T1848] veth1.100: entered allmulticast mode [ 305.572473][ T1863] veth1.100: left allmulticast mode [ 321.077493][ T2028] veth1: left allmulticast mode [ 321.077731][ T2028] veth1: left promiscuous mode [ 321.078045][ T2028] br0: port 1(veth1) entered disabled state [ 323.849689][ T2068] br0: port 1(veth1) entered blocking state [ 323.850614][ T2068] br0: port 1(veth1) entered disabled state [ 323.851121][ T2068] veth1: entered allmulticast mode [ 323.854591][ T2068] veth1: entered promiscuous mode [ 323.957904][ T151] br0: port 1(veth1) entered blocking state [ 323.958521][ T151] br0: port 1(veth1) entered forwarding state [ 324.464494][ T2075] br0: port 1(veth1) entered disabled state [ 324.466039][ T2075] br0: port 1(veth1) entered blocking state [ 324.466333][ T2075] br0: port 1(veth1) entered forwarding state [ 325.402684][ T2086] br0: entered promiscuous mode [ 338.995584][ T2126] br0.100: entered promiscuous mode [ 345.161032][ T2141] br0.100: left promiscuous mode [ 348.721802][ T2168] br0.100: entered allmulticast mode [ 348.722056][ T2168] br0: entered allmulticast mode [ 354.829300][ T2183] br0.100: left allmulticast mode [ 354.829544][ T2183] br0: left allmulticast mode [ 360.418262][ T2251] br0: left promiscuous mode [ 360.668398][ T2255] br0: port 1(veth1) entered disabled state [ 362.980490][ T2260] veth1: left allmulticast mode [ 362.981623][ T2260] veth1: left promiscuous mode [ 362.982510][ T2260] br0: port 1(veth1) entered disabled state [ 367.114809][ T2293] br0: port 1(veth1) entered blocking state [ 367.115157][ T2293] br0: port 1(veth1) entered disabled state [ 367.115465][ T2293] veth1: entered allmulticast mode [ 367.117390][ T2293] veth1: entered promiscuous mode [ 367.118777][ T2293] br0: port 1(veth1) entered blocking state [ 367.119153][ T2293] br0: port 1(veth1) entered forwarding state [ 367.878580][ T2300] br0: port 1(veth1) entered disabled state [ 367.880106][ T2300] br0: port 1(veth1) entered blocking state [ 367.880453][ T2300] br0: port 1(veth1) entered forwarding state [ 369.047306][ T2311] br0: entered promiscuous mode [ 383.236960][ T2353] br0.100: entered promiscuous mode [ 389.351394][ T2368] br0.100: left promiscuous mode [ 392.953632][ T2395] br0.100: entered allmulticast mode [ 392.953857][ T2395] br0: entered allmulticast mode [ 399.021766][ T2410] br0.100: left allmulticast mode [ 399.022092][ T2410] br0: left allmulticast mode [ 404.990042][ T2480] br0: left promiscuous mode [ 405.247724][ T2484] br0: port 1(veth1) entered disabled state [ 405.873244][ T2489] veth1: left allmulticast mode [ 405.873564][ T2489] veth1: left promiscuous mode [ 405.873981][ T2489] br0: port 1(veth1) entered disabled state