[ 18.940437][ T299] veth1: entered promiscuous mode [ 18.948525][ T299] ip (299) used greatest stack depth: 23864 bytes left [ 19.145429][ T303] veth1: left promiscuous mode [ 21.225771][ T327] veth1: entered promiscuous mode [ 44.315111][ T409] veth1: entered allmulticast mode [ 50.452765][ T424] veth1: left allmulticast mode [ 51.373751][ T439] [ 51.374073][ T439] ============================= [ 51.374276][ T439] WARNING: suspicious RCU usage [ 51.374457][ T439] 6.14.0-rc6-virtme #1 Not tainted [ 51.374632][ T439] ----------------------------- [ 51.374807][ T439] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 51.375157][ T439] [ 51.375157][ T439] other info that might help us debug this: [ 51.375157][ T439] [ 51.375519][ T439] [ 51.375519][ T439] rcu_scheduler_active = 2, debug_locks = 1 [ 51.375793][ T439] 1 lock held by mausezahn/439: [ 51.375982][ T439] #0: ffffffff98f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 51.376329][ T439] [ 51.376329][ T439] stack backtrace: [ 51.376596][ T439] CPU: 0 UID: 0 PID: 439 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 51.376601][ T439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 51.376603][ T439] Call Trace: [ 51.376605][ T439] [ 51.376608][ T439] dump_stack_lvl+0xb0/0xd0 [ 51.376620][ T439] lockdep_rcu_suspicious+0x1ea/0x280 [ 51.376639][ T439] dev_hard_start_xmit+0x2fc/0x3f0 [ 51.376652][ T439] __dev_queue_xmit+0xfaf/0x18d0 [ 51.376667][ T439] ? __pfx___dev_queue_xmit+0x10/0x10 [ 51.376671][ T439] ? packet_parse_headers+0x231/0x9c0 [ 51.376681][ T439] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 51.376689][ T439] ? __pfx_packet_parse_headers+0x10/0x10 [ 51.376697][ T439] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 51.376703][ T439] ? dev_get_by_index+0xb2/0x190 [ 51.376715][ T439] packet_snd+0xd0c/0x19d0 [ 51.376727][ T439] ? __lock_release+0x103/0x460 [ 51.376731][ T439] ? __might_fault+0x11b/0x170 [ 51.376741][ T439] ? __pfx_packet_snd+0x10/0x10 [ 51.376745][ T439] ? trace_lock_acquire+0x14c/0x1f0 [ 51.376749][ T439] ? __might_fault+0x11b/0x170 [ 51.376756][ T439] ? lock_acquire+0x32/0xc0 [ 51.376763][ T439] ? __might_fault+0x11b/0x170 [ 51.376774][ T439] __sys_sendto+0x3c3/0x450 [ 51.376781][ T439] ? __pfx___sys_sendto+0x10/0x10 [ 51.376802][ T439] ? sock_ioctl+0x3b6/0x590 [ 51.376808][ T439] ? _copy_to_user+0x5c/0x80 [ 51.376818][ T439] ? __pfx_put_timespec64+0x10/0x10 [ 51.376827][ T439] ? posix_cpu_clock_get+0xe1/0x240 [ 51.376837][ T439] ? __x64_sys_clock_gettime+0x17a/0x200 [ 51.376842][ T439] ? __pfx___x64_sys_clock_gettime+0x10/0x10 [ 51.376849][ T439] __x64_sys_sendto+0xe0/0x1c0 [ 51.376853][ T439] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 51.376858][ T439] do_syscall_64+0xc1/0x1d0 [ 51.376867][ T439] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.376873][ T439] RIP: 0033:0x7f812e294a4a [ 51.376879][ T439] 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 [ 51.376882][ T439] RSP: 002b:00007ffeaf6a6768 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 51.376887][ T439] RAX: ffffffffffffffda RBX: 00000000098d49d0 RCX: 00007f812e294a4a [ 51.376889][ T439] RDX: 000000000000003a RSI: 00000000098d4c02 RDI: 0000000000000005 [ 51.376891][ T439] RBP: 00000000098d4c02 R08: 00007ffeaf6a6770 R09: 0000000000000014 [ 51.376893][ T439] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 51.376895][ T439] R13: 000000000000003a R14: 00007ffeaf6a6770 R15: 0000000000000000 [ 51.376911][ T439] [ 66.166214][ T588] veth1: left promiscuous mode [ 68.998125][ T627] br0: port 1(veth1) entered blocking state [ 68.998447][ T627] br0: port 1(veth1) entered disabled state [ 68.998720][ T627] veth1: entered allmulticast mode [ 69.001342][ T627] veth1: entered promiscuous mode [ 69.120516][ T40] br0: port 1(veth1) entered blocking state [ 69.121189][ T40] br0: port 1(veth1) entered forwarding state [ 69.598062][ T634] br0: port 1(veth1) entered disabled state [ 69.600778][ T634] br0: port 1(veth1) entered blocking state [ 69.601066][ T634] br0: port 1(veth1) entered forwarding state [ 70.127311][ T641] br0: entered promiscuous mode [ 93.256974][ T723] br0: entered allmulticast mode [ 99.319412][ T738] br0: left allmulticast mode [ 104.956277][ T806] br0: left promiscuous mode [ 105.292590][ T811] br0: port 1(veth1) entered disabled state [ 105.802374][ T816] veth1: left allmulticast mode [ 105.802657][ T816] veth1: left promiscuous mode [ 105.803003][ T816] br0: port 1(veth1) entered disabled state [ 107.774320][ T845] br0: port 1(veth1) entered blocking state [ 107.774827][ T845] br0: port 1(veth1) entered disabled state [ 107.775328][ T845] veth1: entered allmulticast mode [ 107.777884][ T845] veth1: entered promiscuous mode [ 107.778969][ T845] br0: port 1(veth1) entered blocking state [ 107.779282][ T845] br0: port 1(veth1) entered forwarding state [ 108.335448][ T852] br0: port 1(veth1) entered disabled state [ 108.336614][ T852] br0: port 1(veth1) entered blocking state [ 108.337087][ T852] br0: port 1(veth1) entered forwarding state [ 108.904669][ T859] br0: entered promiscuous mode [ 132.071923][ T941] br0: entered allmulticast mode [ 138.154258][ T956] br0: left allmulticast mode [ 143.782974][ T1024] br0: left promiscuous mode [ 144.084627][ T1029] br0: port 1(veth1) entered disabled state [ 144.608802][ T1034] veth1: left allmulticast mode [ 144.609200][ T1034] veth1: left promiscuous mode [ 144.609714][ T1034] br0: port 1(veth1) entered disabled state [ 146.130562][ T1060] veth1: entered promiscuous mode [ 146.349071][ T1064] veth1: left promiscuous mode [ 147.139879][ T1073] 8021q: 802.1Q VLAN Support v1.8 [ 148.964659][ T1096] veth1: entered promiscuous mode [ 162.566365][ T1136] veth1.100: entered promiscuous mode [ 168.701870][ T1151] veth1.100: left promiscuous mode [ 172.213003][ T1178] veth1.100: entered allmulticast mode [ 172.213550][ T1178] veth1: entered allmulticast mode [ 178.415737][ T1193] veth1.100: left allmulticast mode [ 178.416009][ T1193] veth1: left allmulticast mode [ 193.655894][ T1357] veth1: left promiscuous mode [ 195.552551][ T1390] veth1: entered promiscuous mode [ 195.747815][ T1394] veth1: left promiscuous mode [ 198.328123][ T1425] br0: port 1(veth1) entered blocking state [ 198.328605][ T1425] br0: port 1(veth1) entered disabled state [ 198.328911][ T1425] veth1: entered allmulticast mode [ 198.331566][ T1425] veth1: entered promiscuous mode [ 198.333495][ T1425] br0: port 1(veth1) entered blocking state [ 198.333886][ T1425] br0: port 1(veth1) entered forwarding state [ 198.345089][ T1425] ip (1425) used greatest stack depth: 23840 bytes left [ 212.267692][ T1470] veth1.100: entered promiscuous mode [ 218.492931][ T1485] veth1.100: left promiscuous mode [ 222.003501][ T1512] veth1.100: entered allmulticast mode [ 228.130039][ T1528] veth1.100: left allmulticast mode [ 243.069594][ T1693] veth1: left allmulticast mode [ 243.069831][ T1693] veth1: left promiscuous mode [ 243.070161][ T1693] br0: port 1(veth1) entered disabled state [ 245.096101][ T1726] veth1: entered promiscuous mode [ 245.304315][ T1730] veth1: left promiscuous mode [ 247.994980][ T1761] br0: port 1(veth1) entered blocking state [ 247.995569][ T1761] br0: port 1(veth1) entered disabled state [ 247.995993][ T1761] veth1: entered allmulticast mode [ 247.999172][ T1761] veth1: entered promiscuous mode [ 248.000827][ T1761] br0: port 1(veth1) entered blocking state [ 248.001291][ T1761] br0: port 1(veth1) entered forwarding state [ 261.828475][ T1806] veth1.100: entered promiscuous mode [ 267.985927][ T1821] veth1.100: left promiscuous mode [ 271.577090][ T1848] veth1.100: entered allmulticast mode [ 277.666709][ T1863] veth1.100: left allmulticast mode [ 292.866915][ T2028] veth1: left allmulticast mode [ 292.867207][ T2028] veth1: left promiscuous mode [ 292.867532][ T2028] br0: port 1(veth1) entered disabled state [ 295.733757][ T2068] br0: port 1(veth1) entered blocking state [ 295.734086][ T2068] br0: port 1(veth1) entered disabled state [ 295.734390][ T2068] veth1: entered allmulticast mode [ 295.736557][ T2068] veth1: entered promiscuous mode [ 295.819174][ T56] br0: port 1(veth1) entered blocking state [ 295.819635][ T56] br0: port 1(veth1) entered forwarding state [ 296.350956][ T2075] br0: port 1(veth1) entered disabled state [ 296.353256][ T2075] br0: port 1(veth1) entered blocking state [ 296.353547][ T2075] br0: port 1(veth1) entered forwarding state [ 297.206376][ T2086] br0: entered promiscuous mode [ 310.724398][ T2127] br0.100: entered promiscuous mode [ 316.885284][ T2142] br0.100: left promiscuous mode [ 320.344173][ T2169] br0.100: entered allmulticast mode [ 320.344399][ T2169] br0: entered allmulticast mode [ 326.366412][ T2184] br0.100: left allmulticast mode [ 326.366693][ T2184] br0: left allmulticast mode [ 332.143235][ T2252] br0: left promiscuous mode [ 332.363225][ T2256] br0: port 1(veth1) entered disabled state [ 332.847304][ T2261] veth1: left allmulticast mode [ 332.847610][ T2261] veth1: left promiscuous mode [ 332.847961][ T2261] br0: port 1(veth1) entered disabled state [ 335.229377][ T2293] br0: port 1(veth1) entered blocking state [ 335.229719][ T2293] br0: port 1(veth1) entered disabled state [ 335.230016][ T2293] veth1: entered allmulticast mode [ 335.233249][ T2293] veth1: entered promiscuous mode [ 335.234524][ T2293] br0: port 1(veth1) entered blocking state [ 335.234817][ T2293] br0: port 1(veth1) entered forwarding state [ 335.800710][ T2300] br0: port 1(veth1) entered disabled state [ 335.801934][ T2300] br0: port 1(veth1) entered blocking state [ 335.802214][ T2300] br0: port 1(veth1) entered forwarding state [ 336.625962][ T2312] br0: entered promiscuous mode [ 350.235955][ T2354] br0.100: entered promiscuous mode [ 356.250046][ T2369] br0.100: left promiscuous mode [ 359.747608][ T2396] br0.100: entered allmulticast mode [ 359.747838][ T2396] br0: entered allmulticast mode [ 365.860340][ T2411] br0.100: left allmulticast mode [ 365.860631][ T2411] br0: left allmulticast mode [ 371.728241][ T2481] br0: left promiscuous mode [ 372.023706][ T2485] br0: port 1(veth1) entered disabled state [ 372.564888][ T2490] veth1: left allmulticast mode [ 372.565237][ T2490] veth1: left promiscuous mode [ 372.565698][ T2490] br0: port 1(veth1) entered disabled state