[ 11.861387][ T249] ip (249) used greatest stack depth: 23928 bytes left [ 14.371474][ T294] 8021q: 802.1Q VLAN Support v1.8 [ 17.302898][ T330] br0: port 1(veth1) entered blocking state [ 17.303370][ T330] br0: port 1(veth1) entered disabled state [ 17.303771][ T330] veth1: entered allmulticast mode [ 17.306012][ T330] veth1: entered promiscuous mode [ 17.416959][ T40] br0: port 1(veth1) entered blocking state [ 17.417370][ T40] br0: port 1(veth1) entered forwarding state [ 17.610142][ T334] br0: port 2(veth2) entered blocking state [ 17.610518][ T334] br0: port 2(veth2) entered disabled state [ 17.610970][ T334] veth2: entered allmulticast mode [ 17.613354][ T334] veth2: entered promiscuous mode [ 17.706996][ T46] br0: port 2(veth2) entered blocking state [ 17.707476][ T46] br0: port 2(veth2) entered forwarding state [ 25.747060][ T426] [ 25.747390][ T426] ============================= [ 25.747582][ T426] WARNING: suspicious RCU usage [ 25.748056][ T426] 6.14.0-rc6-virtme #1 Not tainted [ 25.748231][ T426] ----------------------------- [ 25.748403][ T426] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 25.748717][ T426] [ 25.748717][ T426] other info that might help us debug this: [ 25.748717][ T426] [ 25.749093][ T426] [ 25.749093][ T426] rcu_scheduler_active = 2, debug_locks = 1 [ 25.749393][ T426] 1 lock held by mausezahn/426: [ 25.749565][ T426] #0: ffffffff8f15b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 25.749907][ T426] [ 25.749907][ T426] stack backtrace: [ 25.750120][ T426] CPU: 3 UID: 0 PID: 426 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 25.750125][ T426] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.750127][ T426] Call Trace: [ 25.750130][ T426] [ 25.750132][ T426] dump_stack_lvl+0xb0/0xd0 [ 25.750144][ T426] lockdep_rcu_suspicious+0x1ea/0x280 [ 25.750161][ T426] dev_hard_start_xmit+0x2fc/0x3f0 [ 25.750171][ T426] __dev_queue_xmit+0xfaf/0x18d0 [ 25.750181][ T426] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 25.750195][ T426] ? __pfx___dev_queue_xmit+0x10/0x10 [ 25.750199][ T426] ? packet_parse_headers+0x231/0x9c0 [ 25.750209][ T426] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 25.750215][ T426] ? __pfx_packet_parse_headers+0x10/0x10 [ 25.750219][ T426] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 25.750226][ T426] ? dev_get_by_index+0xb2/0x190 [ 25.750238][ T426] packet_snd+0xd0c/0x19d0 [ 25.750249][ T426] ? __lock_release+0x103/0x460 [ 25.750254][ T426] ? __might_fault+0x11b/0x170 [ 25.750261][ T426] ? __pfx_packet_snd+0x10/0x10 [ 25.750263][ T426] ? trace_lock_acquire+0x14c/0x1f0 [ 25.750266][ T426] ? __might_fault+0x11b/0x170 [ 25.750273][ T426] ? lock_acquire+0x32/0xc0 [ 25.750279][ T426] ? __might_fault+0x11b/0x170 [ 25.750290][ T426] __sys_sendto+0x3c3/0x450 [ 25.750296][ T426] ? __pfx___sys_sendto+0x10/0x10 [ 25.750311][ T426] ? sock_ioctl+0x3b6/0x590 [ 25.750321][ T426] ? __pfx___up_read+0x10/0x10 [ 25.750330][ T426] ? do_user_addr_fault+0x374/0xe30 [ 25.750341][ T426] ? do_user_addr_fault+0x374/0xe30 [ 25.750348][ T426] __x64_sys_sendto+0xe0/0x1c0 [ 25.750352][ T426] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 25.750357][ T426] do_syscall_64+0xc1/0x1d0 [ 25.750366][ T426] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 25.750372][ T426] RIP: 0033:0x7f57939cba4a [ 25.750376][ T426] 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 [ 25.750380][ T426] RSP: 002b:00007ffcf7b2f948 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 25.750384][ T426] RAX: ffffffffffffffda RBX: 00000000034969d0 RCX: 00007f57939cba4a [ 25.750386][ T426] RDX: 0000000000000042 RSI: 0000000003496ca2 RDI: 0000000000000005 [ 25.750388][ T426] RBP: 0000000003496ca2 R08: 00007ffcf7b2f950 R09: 0000000000000014 [ 25.750390][ T426] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 25.750392][ T426] R13: 0000000000000042 R14: 00007ffcf7b2f950 R15: 0000000000000000 [ 25.750409][ T426] [ 91.954675][ T2117] br0: port 2(veth2) entered disabled state [ 92.033700][ T2118] veth2: left allmulticast mode [ 92.033978][ T2118] veth2: left promiscuous mode [ 92.034339][ T2118] br0: port 2(veth2) entered disabled state [ 92.128520][ T2119] br0: port 1(veth1) entered disabled state [ 92.206453][ T2120] veth1: left allmulticast mode [ 92.206717][ T2120] veth1: left promiscuous mode [ 92.207046][ T2120] br0: port 1(veth1) entered disabled state [ 93.012899][ T2138] br0: port 1(veth1) entered blocking state [ 93.013305][ T2138] br0: port 1(veth1) entered disabled state [ 93.013589][ T2138] veth1: entered allmulticast mode [ 93.015467][ T2138] veth1: entered promiscuous mode [ 93.115900][ T46] br0: port 1(veth1) entered blocking state [ 93.116287][ T46] br0: port 1(veth1) entered forwarding state [ 93.465965][ T2143] br0: port 2(veth2) entered blocking state [ 93.466435][ T2143] br0: port 2(veth2) entered disabled state [ 93.467231][ T2143] veth2: entered allmulticast mode [ 93.469202][ T2143] veth2: entered promiscuous mode [ 93.581013][ T46] br0: port 2(veth2) entered blocking state [ 93.581319][ T46] br0: port 2(veth2) entered forwarding state [ 168.509811][ T3935] br0: port 2(veth2) entered disabled state [ 168.629807][ T3936] veth2: left allmulticast mode [ 168.630208][ T3936] veth2: left promiscuous mode [ 168.631065][ T3936] br0: port 2(veth2) entered disabled state [ 168.740305][ T3937] br0: port 1(veth1) entered disabled state [ 168.841821][ T3938] veth1: left allmulticast mode [ 168.842128][ T3938] veth1: left promiscuous mode [ 168.842624][ T3938] br0: port 1(veth1) entered disabled state [ 169.727491][ T3956] br0: port 1(veth1) entered blocking state [ 169.728011][ T3956] br0: port 1(veth1) entered disabled state [ 169.728311][ T3956] veth1: entered allmulticast mode [ 169.730255][ T3956] veth1: entered promiscuous mode [ 169.816737][ T41] br0: port 1(veth1) entered blocking state [ 169.817263][ T41] br0: port 1(veth1) entered forwarding state [ 170.178341][ T3961] br0: port 2(veth2) entered blocking state [ 170.178653][ T3961] br0: port 2(veth2) entered disabled state [ 170.178931][ T3961] veth2: entered allmulticast mode [ 170.181190][ T3961] veth2: entered promiscuous mode [ 170.269712][ T46] br0: port 2(veth2) entered blocking state [ 170.270031][ T46] br0: port 2(veth2) entered forwarding state [ 326.888776][ T7810] br0: port 2(veth2) entered disabled state [ 326.980407][ T7811] veth2: left allmulticast mode [ 326.980717][ T7811] veth2: left promiscuous mode [ 326.981054][ T7811] br0: port 2(veth2) entered disabled state [ 327.066794][ T7812] br0: port 1(veth1) entered disabled state [ 327.156336][ T7813] veth1: left allmulticast mode [ 327.156719][ T7813] veth1: left promiscuous mode [ 327.157139][ T7813] br0: port 1(veth1) entered disabled state [ 329.488100][ T7842] ip (7842) used greatest stack depth: 23728 bytes left