[ 15.660931][ T312] GACT probability NOT on [ 17.370513][ T362] br1: port 1(veth1) entered blocking state [ 17.371060][ T362] br1: port 1(veth1) entered disabled state [ 17.371500][ T362] veth1: entered allmulticast mode [ 17.373558][ T362] veth1: entered promiscuous mode [ 17.655196][ T148] br1: port 1(veth1) entered blocking state [ 17.655678][ T148] br1: port 1(veth1) entered forwarding state [ 24.403520][ T404] ip (404) used greatest stack depth: 24112 bytes left [ 24.563118][ T413] br1: port 2(vx1) entered blocking state [ 24.563436][ T413] br1: port 2(vx1) entered disabled state [ 24.563808][ T413] vx1: entered allmulticast mode [ 24.566145][ T413] vx1: entered promiscuous mode [ 24.567564][ T413] br1: port 2(vx1) entered blocking state [ 24.567940][ T413] br1: port 2(vx1) entered forwarding state [ 25.755394][ T469] [ 25.755748][ T469] ============================= [ 25.755940][ T469] WARNING: suspicious RCU usage [ 25.756429][ T469] 6.14.0-rc6-virtme #1 Not tainted [ 25.756621][ T469] ----------------------------- [ 25.756792][ T469] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 25.757115][ T469] [ 25.757115][ T469] other info that might help us debug this: [ 25.757115][ T469] [ 25.757455][ T469] [ 25.757455][ T469] rcu_scheduler_active = 2, debug_locks = 1 [ 25.757720][ T469] 1 lock held by mausezahn/469: [ 25.757901][ T469] #0: ffffffffb5b5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 25.758270][ T469] [ 25.758270][ T469] stack backtrace: [ 25.758495][ T469] CPU: 0 UID: 0 PID: 469 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 25.758500][ T469] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.758503][ T469] Call Trace: [ 25.758505][ T469] [ 25.758508][ T469] dump_stack_lvl+0xb0/0xd0 [ 25.758517][ T469] lockdep_rcu_suspicious+0x1ea/0x280 [ 25.758529][ T469] dev_hard_start_xmit+0x2fc/0x3f0 [ 25.758540][ T469] __dev_queue_xmit+0xfaf/0x18d0 [ 25.758555][ T469] ? __pfx___dev_queue_xmit+0x10/0x10 [ 25.758559][ T469] ? packet_parse_headers+0x231/0x9c0 [ 25.758569][ T469] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 25.758576][ T469] ? __pfx_packet_parse_headers+0x10/0x10 [ 25.758580][ T469] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 25.758586][ T469] ? dev_get_by_index+0xb2/0x190 [ 25.758598][ T469] packet_snd+0xd0c/0x19d0 [ 25.758610][ T469] ? __lock_release+0x103/0x460 [ 25.758614][ T469] ? __might_fault+0x11b/0x170 [ 25.758622][ T469] ? __pfx_packet_snd+0x10/0x10 [ 25.758625][ T469] ? trace_lock_acquire+0x14c/0x1f0 [ 25.758627][ T469] ? __might_fault+0x11b/0x170 [ 25.758634][ T469] ? lock_acquire+0x32/0xc0 [ 25.758640][ T469] ? __might_fault+0x11b/0x170 [ 25.758651][ T469] __sys_sendto+0x3c3/0x450 [ 25.758658][ T469] ? __pfx___sys_sendto+0x10/0x10 [ 25.758672][ T469] ? sock_ioctl+0x3b6/0x590 [ 25.758683][ T469] ? __pfx___up_read+0x10/0x10 [ 25.758693][ T469] ? do_user_addr_fault+0x374/0xe30 [ 25.758704][ T469] ? do_user_addr_fault+0x374/0xe30 [ 25.758711][ T469] __x64_sys_sendto+0xe0/0x1c0 [ 25.758715][ T469] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 25.758720][ T469] do_syscall_64+0xc1/0x1d0 [ 25.758730][ T469] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 25.758736][ T469] RIP: 0033:0x7f630b22ea4a [ 25.758742][ T469] 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 [ 25.758745][ T469] RSP: 002b:00007ffcb9030c98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 25.758749][ T469] RAX: ffffffffffffffda RBX: 000000003ad9d9d0 RCX: 00007f630b22ea4a [ 25.758752][ T469] RDX: 0000000000000094 RSI: 000000003ad9dcf2 RDI: 0000000000000005 [ 25.758754][ T469] RBP: 000000003ad9dcf2 R08: 00007ffcb9030ca0 R09: 0000000000000014 [ 25.758757][ T469] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 25.758759][ T469] R13: 0000000000000094 R14: 00007ffcb9030ca0 R15: 0000000000000000 [ 25.758787][ T469] [ 67.009264][ T2366] vx1: left allmulticast mode [ 67.009510][ T2366] vx1: left promiscuous mode [ 67.009875][ T2366] br1: port 2(vx1) entered disabled state [ 67.038457][ T2366] ip (2366) used greatest stack depth: 23808 bytes left [ 67.176646][ T2368] ip (2368) used greatest stack depth: 23552 bytes left [ 67.541500][ T2389] br1: port 2(vx1) entered blocking state [ 67.542191][ T2389] br1: port 2(vx1) entered disabled state [ 67.542489][ T2389] vx1: entered allmulticast mode [ 67.544766][ T2389] vx1: entered promiscuous mode [ 67.545647][ T2389] br1: port 2(vx1) entered blocking state [ 67.545931][ T2389] br1: port 2(vx1) entered forwarding state [ 109.210036][ T4341] vx1: left allmulticast mode [ 109.210489][ T4341] vx1: left promiscuous mode [ 109.211028][ T4341] br1: port 2(vx1) entered disabled state [ 109.830845][ T4374] br1: port 2(vx1) entered blocking state [ 109.831078][ T4374] br1: port 2(vx1) entered disabled state [ 109.831646][ T4374] vx1: entered allmulticast mode [ 109.833502][ T4374] vx1: entered promiscuous mode [ 109.834245][ T4374] br1: port 2(vx1) entered blocking state [ 109.834446][ T4374] br1: port 2(vx1) entered forwarding state [ 150.569622][ T6326] vx1: left allmulticast mode [ 150.569954][ T6326] vx1: left promiscuous mode [ 150.570314][ T6326] br1: port 2(vx1) entered disabled state [ 151.155348][ T6359] br1: port 2(vx1) entered blocking state [ 151.155581][ T6359] br1: port 2(vx1) entered disabled state [ 151.155828][ T6359] vx1: entered allmulticast mode [ 151.157813][ T6359] vx1: entered promiscuous mode [ 151.158612][ T6359] br1: port 2(vx1) entered blocking state [ 151.158879][ T6359] br1: port 2(vx1) entered forwarding state [ 191.521673][ T8311] vx1: left allmulticast mode [ 191.522001][ T8311] vx1: left promiscuous mode [ 191.522397][ T8311] br1: port 2(vx1) entered disabled state [ 192.102918][ T8344] br1: port 2(vx1) entered blocking state [ 192.103226][ T8344] br1: port 2(vx1) entered disabled state [ 192.103516][ T8344] vx1: entered allmulticast mode [ 192.105983][ T8344] vx1: entered promiscuous mode [ 192.106843][ T8344] br1: port 2(vx1) entered blocking state [ 192.107073][ T8344] br1: port 2(vx1) entered forwarding state [ 233.662492][T10296] vx1: left allmulticast mode [ 233.662915][T10296] vx1: left promiscuous mode [ 233.663490][T10296] br1: port 2(vx1) entered disabled state [ 234.298184][T10329] br1: port 2(vx1) entered blocking state [ 234.298535][T10329] br1: port 2(vx1) entered disabled state [ 234.298784][T10329] vx1: entered allmulticast mode [ 234.301685][T10329] vx1: entered promiscuous mode [ 234.302606][T10329] br1: port 2(vx1) entered blocking state [ 234.302810][T10329] br1: port 2(vx1) entered forwarding state [ 275.763968][T12281] vx1: left allmulticast mode [ 275.764217][T12281] vx1: left promiscuous mode [ 275.764531][T12281] br1: port 2(vx1) entered disabled state [ 276.365768][T12314] br1: port 2(vx1) entered blocking state [ 276.366011][T12314] br1: port 2(vx1) entered disabled state [ 276.366468][T12314] vx1: entered allmulticast mode [ 276.368450][T12314] vx1: entered promiscuous mode [ 276.369335][T12314] br1: port 2(vx1) entered blocking state [ 276.369541][T12314] br1: port 2(vx1) entered forwarding state [ 317.430810][T14266] vx1: left allmulticast mode [ 317.431083][T14266] vx1: left promiscuous mode [ 317.431428][T14266] br1: port 2(vx1) entered disabled state [ 318.313906][T14291] br1: port 1(veth1) entered disabled state [ 318.409196][T14293] veth1: left allmulticast mode [ 318.409508][T14293] veth1: left promiscuous mode [ 318.409864][T14293] br1: port 1(veth1) entered disabled state