[ 13.955833][ T309] GACT probability NOT on [ 15.519748][ T358] br1: port 1(veth1) entered blocking state [ 15.520547][ T358] br1: port 1(veth1) entered disabled state [ 15.520949][ T358] veth1: entered allmulticast mode [ 15.522952][ T358] veth1: entered promiscuous mode [ 15.747631][ T46] br1: port 1(veth1) entered blocking state [ 15.748035][ T46] br1: port 1(veth1) entered forwarding state [ 22.498455][ T410] br1: port 2(vx1) entered blocking state [ 22.498702][ T410] br1: port 2(vx1) entered disabled state [ 22.498935][ T410] vx1: entered allmulticast mode [ 22.501151][ T410] vx1: entered promiscuous mode [ 22.502447][ T410] br1: port 2(vx1) entered blocking state [ 22.502758][ T410] br1: port 2(vx1) entered forwarding state [ 23.582453][ T465] [ 23.582808][ T465] ============================= [ 23.583021][ T465] WARNING: suspicious RCU usage [ 23.583248][ T465] 6.14.0-rc6-virtme #1 Not tainted [ 23.583457][ T465] ----------------------------- [ 23.583928][ T465] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.584287][ T465] [ 23.584287][ T465] other info that might help us debug this: [ 23.584287][ T465] [ 23.584661][ T465] [ 23.584661][ T465] rcu_scheduler_active = 2, debug_locks = 1 [ 23.584941][ T465] 1 lock held by mausezahn/465: [ 23.585166][ T465] #0: ffffffffa315b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.585501][ T465] [ 23.585501][ T465] stack backtrace: [ 23.585709][ T465] CPU: 0 UID: 0 PID: 465 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.585713][ T465] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.585715][ T465] Call Trace: [ 23.585717][ T465] [ 23.585720][ T465] dump_stack_lvl+0xb0/0xd0 [ 23.585732][ T465] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.585749][ T465] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.585760][ T465] __dev_queue_xmit+0xfaf/0x18d0 [ 23.585775][ T465] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.585779][ T465] ? packet_parse_headers+0x231/0x9c0 [ 23.585788][ T465] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.585795][ T465] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.585800][ T465] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.585806][ T465] ? dev_get_by_index+0xb2/0x190 [ 23.585819][ T465] packet_snd+0xd0c/0x19d0 [ 23.585830][ T465] ? __lock_release+0x103/0x460 [ 23.585836][ T465] ? __might_fault+0x11b/0x170 [ 23.585848][ T465] ? __pfx_packet_snd+0x10/0x10 [ 23.585852][ T465] ? trace_lock_acquire+0x14c/0x1f0 [ 23.585856][ T465] ? __might_fault+0x11b/0x170 [ 23.585864][ T465] ? lock_acquire+0x32/0xc0 [ 23.585870][ T465] ? __might_fault+0x11b/0x170 [ 23.585881][ T465] __sys_sendto+0x3c3/0x450 [ 23.585888][ T465] ? __pfx___sys_sendto+0x10/0x10 [ 23.585902][ T465] ? sock_ioctl+0x3b6/0x590 [ 23.585912][ T465] ? __pfx___up_read+0x10/0x10 [ 23.585922][ T465] ? do_user_addr_fault+0x374/0xe30 [ 23.585938][ T465] ? do_user_addr_fault+0x374/0xe30 [ 23.585951][ T465] __x64_sys_sendto+0xe0/0x1c0 [ 23.585955][ T465] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.585960][ T465] do_syscall_64+0xc1/0x1d0 [ 23.585969][ T465] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.585975][ T465] RIP: 0033:0x7fa933927a4a [ 23.585981][ T465] 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 [ 23.585984][ T465] RSP: 002b:00007ffc10647238 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.585988][ T465] RAX: ffffffffffffffda RBX: 00000000396139d0 RCX: 00007fa933927a4a [ 23.585990][ T465] RDX: 0000000000000094 RSI: 0000000039613cf2 RDI: 0000000000000005 [ 23.585992][ T465] RBP: 0000000039613cf2 R08: 00007ffc10647240 R09: 0000000000000014 [ 23.585994][ T465] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.585996][ T465] R13: 0000000000000094 R14: 00007ffc10647240 R15: 0000000000000000 [ 23.586012][ T465] [ 61.151314][ T2362] vx1: left allmulticast mode [ 61.151545][ T2362] vx1: left promiscuous mode [ 61.151889][ T2362] br1: port 2(vx1) entered disabled state [ 61.167976][ T2362] ip (2362) used greatest stack depth: 23800 bytes left [ 61.674717][ T2385] br1: port 2(vx1) entered blocking state [ 61.674971][ T2385] br1: port 2(vx1) entered disabled state [ 61.675220][ T2385] vx1: entered allmulticast mode [ 61.677655][ T2385] vx1: entered promiscuous mode [ 61.683855][ T2385] br1: port 2(vx1) entered blocking state [ 61.684068][ T2385] br1: port 2(vx1) entered forwarding state [ 101.016666][ T4337] vx1: left allmulticast mode [ 101.016955][ T4337] vx1: left promiscuous mode [ 101.017339][ T4337] br1: port 2(vx1) entered disabled state [ 101.600761][ T4370] br1: port 2(vx1) entered blocking state [ 101.601011][ T4370] br1: port 2(vx1) entered disabled state [ 101.601326][ T4370] vx1: entered allmulticast mode [ 101.603789][ T4370] vx1: entered promiscuous mode [ 101.604622][ T4370] br1: port 2(vx1) entered blocking state [ 101.604838][ T4370] br1: port 2(vx1) entered forwarding state [ 139.326409][ T6322] vx1: left allmulticast mode [ 139.326768][ T6322] vx1: left promiscuous mode [ 139.327308][ T6322] br1: port 2(vx1) entered disabled state [ 139.892416][ T6355] br1: port 2(vx1) entered blocking state [ 139.892806][ T6355] br1: port 2(vx1) entered disabled state [ 139.893197][ T6355] vx1: entered allmulticast mode [ 139.896445][ T6355] vx1: entered promiscuous mode [ 139.897748][ T6355] br1: port 2(vx1) entered blocking state [ 139.898136][ T6355] br1: port 2(vx1) entered forwarding state [ 178.345013][ T8307] vx1: left allmulticast mode [ 178.345577][ T8307] vx1: left promiscuous mode [ 178.345919][ T8307] br1: port 2(vx1) entered disabled state [ 178.963959][ T8340] br1: port 2(vx1) entered blocking state [ 178.964263][ T8340] br1: port 2(vx1) entered disabled state [ 178.964575][ T8340] vx1: entered allmulticast mode [ 178.967714][ T8340] vx1: entered promiscuous mode [ 178.968720][ T8340] br1: port 2(vx1) entered blocking state [ 178.968929][ T8340] br1: port 2(vx1) entered forwarding state [ 217.920216][T10292] vx1: left allmulticast mode [ 217.920472][T10292] vx1: left promiscuous mode [ 217.920793][T10292] br1: port 2(vx1) entered disabled state [ 218.554144][T10325] br1: port 2(vx1) entered blocking state [ 218.554498][T10325] br1: port 2(vx1) entered disabled state [ 218.554857][T10325] vx1: entered allmulticast mode [ 218.558648][T10325] vx1: entered promiscuous mode [ 218.559862][T10325] br1: port 2(vx1) entered blocking state [ 218.560220][T10325] br1: port 2(vx1) entered forwarding state [ 257.666084][T12277] vx1: left allmulticast mode [ 257.666332][T12277] vx1: left promiscuous mode [ 257.666674][T12277] br1: port 2(vx1) entered disabled state [ 258.231965][T12310] br1: port 2(vx1) entered blocking state [ 258.232211][T12310] br1: port 2(vx1) entered disabled state [ 258.232433][T12310] vx1: entered allmulticast mode [ 258.234384][T12310] vx1: entered promiscuous mode [ 258.235443][T12310] br1: port 2(vx1) entered blocking state [ 258.235641][T12310] br1: port 2(vx1) entered forwarding state [ 297.221617][T14262] vx1: left allmulticast mode [ 297.221869][T14262] vx1: left promiscuous mode [ 297.222521][T14262] br1: port 2(vx1) entered disabled state [ 298.123550][T14287] br1: port 1(veth1) entered disabled state [ 298.236755][T14289] veth1: left allmulticast mode [ 298.237043][T14289] veth1: left promiscuous mode [ 298.238058][T14289] br1: port 1(veth1) entered disabled state