[ 18.396834][ T300] veth1: entered promiscuous mode [ 18.600458][ T304] veth1: left promiscuous mode [ 19.240657][ T311] ip (311) used greatest stack depth: 24104 bytes left [ 19.923419][ T320] ip (320) used greatest stack depth: 24000 bytes left [ 20.459185][ T327] veth1: entered promiscuous mode [ 43.395898][ T409] veth1: entered allmulticast mode [ 49.440444][ T424] veth1: left allmulticast mode [ 50.338522][ T439] [ 50.338803][ T439] ============================= [ 50.339006][ T439] WARNING: suspicious RCU usage [ 50.339229][ T439] 6.14.0-rc6-virtme #1 Not tainted [ 50.339441][ T439] ----------------------------- [ 50.339604][ T439] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 50.339906][ T439] [ 50.339906][ T439] other info that might help us debug this: [ 50.339906][ T439] [ 50.340242][ T439] [ 50.340242][ T439] rcu_scheduler_active = 2, debug_locks = 1 [ 50.340482][ T439] 1 lock held by mausezahn/439: [ 50.340654][ T439] #0: ffffffff9bb5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 50.341032][ T439] [ 50.341032][ T439] stack backtrace: [ 50.341355][ T439] CPU: 2 UID: 0 PID: 439 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 50.341362][ T439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 50.341365][ T439] Call Trace: [ 50.341368][ T439] [ 50.341372][ T439] dump_stack_lvl+0xb0/0xd0 [ 50.341383][ T439] lockdep_rcu_suspicious+0x1ea/0x280 [ 50.341401][ T439] dev_hard_start_xmit+0x2fc/0x3f0 [ 50.341423][ T439] __dev_queue_xmit+0xfaf/0x18d0 [ 50.341446][ T439] ? __pfx___dev_queue_xmit+0x10/0x10 [ 50.341452][ T439] ? packet_parse_headers+0x231/0x9c0 [ 50.341464][ T439] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 50.341471][ T439] ? __pfx_packet_parse_headers+0x10/0x10 [ 50.341477][ T439] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 50.341484][ T439] ? dev_get_by_index+0xb2/0x190 [ 50.341498][ T439] packet_snd+0xd0c/0x19d0 [ 50.341513][ T439] ? __lock_release+0x103/0x460 [ 50.341517][ T439] ? __might_fault+0x11b/0x170 [ 50.341525][ T439] ? __pfx_packet_snd+0x10/0x10 [ 50.341528][ T439] ? trace_lock_acquire+0x14c/0x1f0 [ 50.341531][ T439] ? __might_fault+0x11b/0x170 [ 50.341539][ T439] ? lock_acquire+0x32/0xc0 [ 50.341548][ T439] ? __might_fault+0x11b/0x170 [ 50.341562][ T439] __sys_sendto+0x3c3/0x450 [ 50.341570][ T439] ? __pfx___sys_sendto+0x10/0x10 [ 50.341588][ T439] ? sock_ioctl+0x3b6/0x590 [ 50.341594][ T439] ? _copy_to_user+0x5c/0x80 [ 50.341604][ T439] ? __pfx_put_timespec64+0x10/0x10 [ 50.341614][ T439] ? posix_cpu_clock_get+0xe1/0x240 [ 50.341624][ T439] ? __x64_sys_clock_gettime+0x17a/0x200 [ 50.341630][ T439] ? __pfx___x64_sys_clock_gettime+0x10/0x10 [ 50.341639][ T439] __x64_sys_sendto+0xe0/0x1c0 [ 50.341644][ T439] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 50.341651][ T439] do_syscall_64+0xc1/0x1d0 [ 50.341661][ T439] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.341667][ T439] RIP: 0033:0x7f4d4417ca4a [ 50.341672][ 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 [ 50.341676][ T439] RSP: 002b:00007ffcfdec2fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 50.341680][ T439] RAX: ffffffffffffffda RBX: 000000000e5229d0 RCX: 00007f4d4417ca4a [ 50.341683][ T439] RDX: 000000000000003a RSI: 000000000e522c02 RDI: 0000000000000005 [ 50.341686][ T439] RBP: 000000000e522c02 R08: 00007ffcfdec2fb0 R09: 0000000000000014 [ 50.341688][ T439] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 50.341690][ T439] R13: 000000000000003a R14: 00007ffcfdec2fb0 R15: 0000000000000000 [ 50.341713][ T439] [ 64.825731][ T588] veth1: left promiscuous mode [ 67.769981][ T628] br0: port 1(veth1) entered blocking state [ 67.770578][ T628] br0: port 1(veth1) entered disabled state [ 67.770855][ T628] veth1: entered allmulticast mode [ 67.772883][ T628] veth1: entered promiscuous mode [ 67.872896][ T56] br0: port 1(veth1) entered blocking state [ 67.873388][ T56] br0: port 1(veth1) entered forwarding state [ 68.382389][ T636] br0: port 1(veth1) entered disabled state [ 68.384872][ T636] br0: port 1(veth1) entered blocking state [ 68.385183][ T636] br0: port 1(veth1) entered forwarding state [ 68.947390][ T643] br0: entered promiscuous mode [ 91.960436][ T725] br0: entered allmulticast mode [ 98.039912][ T740] br0: left allmulticast mode [ 103.448505][ T808] br0: left promiscuous mode [ 103.755436][ T813] br0: port 1(veth1) entered disabled state [ 104.282222][ T818] veth1: left allmulticast mode [ 104.282486][ T818] veth1: left promiscuous mode [ 104.282821][ T818] br0: port 1(veth1) entered disabled state [ 109.461839][ T847] br0: port 1(veth1) entered blocking state [ 109.462390][ T847] br0: port 1(veth1) entered disabled state [ 109.462818][ T847] veth1: entered allmulticast mode [ 109.466499][ T847] veth1: entered promiscuous mode [ 109.468635][ T847] br0: port 1(veth1) entered blocking state [ 109.469201][ T847] br0: port 1(veth1) entered forwarding state [ 110.432501][ T854] br0: port 1(veth1) entered disabled state [ 110.435025][ T854] br0: port 1(veth1) entered blocking state [ 110.435566][ T854] br0: port 1(veth1) entered forwarding state [ 111.184375][ T861] br0: entered promiscuous mode [ 135.185278][ T943] br0: entered allmulticast mode [ 141.331106][ T958] br0: left allmulticast mode [ 147.152249][ T1026] br0: left promiscuous mode [ 147.468485][ T1031] br0: port 1(veth1) entered disabled state [ 148.001333][ T1036] veth1: left allmulticast mode [ 148.001625][ T1036] veth1: left promiscuous mode [ 148.002012][ T1036] br0: port 1(veth1) entered disabled state [ 149.328244][ T1062] veth1: entered promiscuous mode [ 149.605916][ T1066] veth1: left promiscuous mode [ 150.469190][ T1075] 8021q: 802.1Q VLAN Support v1.8 [ 152.303110][ T1097] veth1: entered promiscuous mode [ 165.732995][ T1138] veth1.100: entered promiscuous mode [ 171.797785][ T1153] veth1.100: left promiscuous mode [ 175.346231][ T1180] veth1.100: entered allmulticast mode [ 175.346552][ T1180] veth1: entered allmulticast mode [ 181.415095][ T1195] veth1.100: left allmulticast mode [ 181.415340][ T1195] veth1: left allmulticast mode [ 197.087493][ T1359] veth1: left promiscuous mode [ 199.096105][ T1392] veth1: entered promiscuous mode [ 199.341816][ T1396] veth1: left promiscuous mode [ 201.955466][ T1427] br0: port 1(veth1) entered blocking state [ 201.955819][ T1427] br0: port 1(veth1) entered disabled state [ 201.956142][ T1427] veth1: entered allmulticast mode [ 201.958060][ T1427] veth1: entered promiscuous mode [ 201.959199][ T1427] br0: port 1(veth1) entered blocking state [ 201.959515][ T1427] br0: port 1(veth1) entered forwarding state [ 201.969839][ T1427] ip (1427) used greatest stack depth: 23488 bytes left [ 215.899025][ T1472] veth1.100: entered promiscuous mode [ 222.119484][ T1487] veth1.100: left promiscuous mode [ 225.654847][ T1514] veth1.100: entered allmulticast mode [ 231.715837][ T1529] veth1.100: left allmulticast mode [ 247.400676][ T1694] veth1: left allmulticast mode [ 247.401025][ T1694] veth1: left promiscuous mode [ 247.401391][ T1694] br0: port 1(veth1) entered disabled state [ 249.504708][ T1727] veth1: entered promiscuous mode [ 249.693264][ T1731] veth1: left promiscuous mode [ 252.500754][ T1762] br0: port 1(veth1) entered blocking state [ 252.501122][ T1762] br0: port 1(veth1) entered disabled state [ 252.501404][ T1762] veth1: entered allmulticast mode [ 252.503432][ T1762] veth1: entered promiscuous mode [ 252.504591][ T1762] br0: port 1(veth1) entered blocking state [ 252.504856][ T1762] br0: port 1(veth1) entered forwarding state [ 266.563916][ T1807] veth1.100: entered promiscuous mode [ 272.700920][ T1822] veth1.100: left promiscuous mode [ 276.156782][ T1849] veth1.100: entered allmulticast mode [ 282.279193][ T1864] veth1.100: left allmulticast mode [ 297.835425][ T2029] veth1: left allmulticast mode [ 297.835656][ T2029] veth1: left promiscuous mode [ 297.835977][ T2029] br0: port 1(veth1) entered disabled state [ 300.724327][ T2069] br0: port 1(veth1) entered blocking state [ 300.724650][ T2069] br0: port 1(veth1) entered disabled state [ 300.724926][ T2069] veth1: entered allmulticast mode [ 300.727707][ T2069] veth1: entered promiscuous mode [ 300.802586][ T59] br0: port 1(veth1) entered blocking state [ 300.802900][ T59] br0: port 1(veth1) entered forwarding state [ 301.280544][ T2076] br0: port 1(veth1) entered disabled state [ 301.283023][ T2076] br0: port 1(veth1) entered blocking state [ 301.283565][ T2076] br0: port 1(veth1) entered forwarding state [ 302.157729][ T2087] br0: entered promiscuous mode [ 315.798278][ T2127] br0.100: entered promiscuous mode [ 321.933642][ T2142] br0.100: left promiscuous mode [ 325.500602][ T2169] br0.100: entered allmulticast mode [ 325.500910][ T2169] br0: entered allmulticast mode [ 331.694299][ T2184] br0.100: left allmulticast mode [ 331.694609][ T2184] br0: left allmulticast mode [ 337.423428][ T2252] br0: left promiscuous mode [ 337.732439][ T2256] br0: port 1(veth1) entered disabled state [ 338.281677][ T2261] veth1: left allmulticast mode [ 338.282017][ T2261] veth1: left promiscuous mode [ 338.282526][ T2261] br0: port 1(veth1) entered disabled state [ 340.641944][ T2293] br0: port 1(veth1) entered blocking state [ 340.642689][ T2293] br0: port 1(veth1) entered disabled state [ 340.643003][ T2293] veth1: entered allmulticast mode [ 340.645145][ T2293] veth1: entered promiscuous mode [ 340.646332][ T2293] br0: port 1(veth1) entered blocking state [ 340.646653][ T2293] br0: port 1(veth1) entered forwarding state [ 341.307336][ T2300] br0: port 1(veth1) entered disabled state [ 341.308816][ T2300] br0: port 1(veth1) entered blocking state [ 341.309166][ T2300] br0: port 1(veth1) entered forwarding state [ 342.218637][ T2311] br0: entered promiscuous mode [ 355.985244][ T2354] br0.100: entered promiscuous mode [ 362.127539][ T2369] br0.100: left promiscuous mode [ 365.682269][ T2396] br0.100: entered allmulticast mode [ 365.682518][ T2396] br0: entered allmulticast mode [ 371.872869][ T2411] br0.100: left allmulticast mode [ 371.873151][ T2411] br0: left allmulticast mode [ 377.714339][ T2481] br0: left promiscuous mode [ 377.970190][ T2485] br0: port 1(veth1) entered disabled state [ 378.499895][ T2490] veth1: left allmulticast mode [ 378.500161][ T2490] veth1: left promiscuous mode [ 378.500481][ T2490] br0: port 1(veth1) entered disabled state