[ 14.509009][ T300] br0: port 1(veth1) entered blocking state [ 14.510173][ T300] br0: port 1(veth1) entered disabled state [ 14.510851][ T300] veth1: entered allmulticast mode [ 14.514273][ T300] veth1: entered promiscuous mode [ 14.596217][ T301] br0: port 2(veth2) entered blocking state [ 14.596560][ T301] br0: port 2(veth2) entered disabled state [ 14.596855][ T301] veth2: entered allmulticast mode [ 14.598868][ T301] veth2: entered promiscuous mode [ 14.788504][ T39] br0: port 1(veth1) entered blocking state [ 14.789163][ T39] br0: port 1(veth1) entered forwarding state [ 14.911999][ T39] br0: port 2(veth2) entered blocking state [ 14.912327][ T39] br0: port 2(veth2) entered forwarding state [ 23.582477][ T349] veth0: entered promiscuous mode [ 24.076466][ T355] GACT probability NOT on [ 24.206500][ T356] [ 24.206856][ T356] ============================= [ 24.207020][ T356] WARNING: suspicious RCU usage [ 24.207172][ T356] 6.14.0-rc6-virtme #1 Not tainted [ 24.207353][ T356] ----------------------------- [ 24.207516][ T356] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 24.207775][ T356] [ 24.207775][ T356] other info that might help us debug this: [ 24.207775][ T356] [ 24.208065][ T356] [ 24.208065][ T356] rcu_scheduler_active = 2, debug_locks = 1 [ 24.208287][ T356] 1 lock held by mausezahn/356: [ 24.208471][ T356] #0: ffffffffa3b5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 24.208756][ T356] [ 24.208756][ T356] stack backtrace: [ 24.208946][ T356] CPU: 3 UID: 0 PID: 356 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 24.208950][ T356] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.208952][ T356] Call Trace: [ 24.208955][ T356] [ 24.208957][ T356] dump_stack_lvl+0xb0/0xd0 [ 24.208965][ T356] lockdep_rcu_suspicious+0x1ea/0x280 [ 24.208977][ T356] dev_hard_start_xmit+0x2fc/0x3f0 [ 24.208987][ T356] __dev_queue_xmit+0xfaf/0x18d0 [ 24.209002][ T356] ? __pfx___dev_queue_xmit+0x10/0x10 [ 24.209006][ T356] ? packet_parse_headers+0x231/0x9c0 [ 24.209015][ T356] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 24.209022][ T356] ? __pfx_packet_parse_headers+0x10/0x10 [ 24.209027][ T356] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 24.209033][ T356] ? dev_get_by_index+0xb2/0x190 [ 24.209045][ T356] packet_snd+0xd0c/0x19d0 [ 24.209056][ T356] ? __lock_release+0x103/0x460 [ 24.209060][ T356] ? __might_fault+0x11b/0x170 [ 24.209068][ T356] ? __pfx_packet_snd+0x10/0x10 [ 24.209071][ T356] ? trace_lock_acquire+0x14c/0x1f0 [ 24.209073][ T356] ? __might_fault+0x11b/0x170 [ 24.209080][ T356] ? lock_acquire+0x32/0xc0 [ 24.209086][ T356] ? __might_fault+0x11b/0x170 [ 24.209097][ T356] __sys_sendto+0x3c3/0x450 [ 24.209104][ T356] ? __pfx___sys_sendto+0x10/0x10 [ 24.209118][ T356] ? sock_ioctl+0x3b6/0x590 [ 24.209129][ T356] ? __pfx___up_read+0x10/0x10 [ 24.209138][ T356] ? do_user_addr_fault+0x374/0xe30 [ 24.209149][ T356] ? do_user_addr_fault+0x374/0xe30 [ 24.209156][ T356] __x64_sys_sendto+0xe0/0x1c0 [ 24.209160][ T356] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 24.209166][ T356] do_syscall_64+0xc1/0x1d0 [ 24.209175][ T356] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 24.209182][ T356] RIP: 0033:0x7fb906279a4a [ 24.209187][ T356] 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 [ 24.209190][ T356] RSP: 002b:00007ffe5337e1b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 24.209194][ T356] RAX: ffffffffffffffda RBX: 0000000001c699d0 RCX: 00007fb906279a4a [ 24.209196][ T356] RDX: 0000000000000062 RSI: 0000000001c695c2 RDI: 0000000000000005 [ 24.209198][ T356] RBP: 0000000001c695c2 R08: 00007ffe5337e1c0 R09: 0000000000000014 [ 24.209200][ T356] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 24.209202][ T356] R13: 0000000000000062 R14: 00007ffe5337e1c0 R15: 0000000000000000 [ 24.209218][ T356] [ 50.180130][ T383] veth0: left promiscuous mode [ 50.516044][ T395] veth3: entered promiscuous mode [ 52.480525][ T404] veth3: left promiscuous mode [ 52.644514][ T406] veth3: entered promiscuous mode [ 54.530713][ T415] veth3: left promiscuous mode [ 54.713836][ T418] veth3: entered promiscuous mode [ 56.651367][ T427] veth3: left promiscuous mode [ 56.805247][ T429] veth3: entered promiscuous mode [ 58.715680][ T438] veth3: left promiscuous mode [ 64.098008][ T476] br0: port 2(veth2) entered disabled state [ 64.107875][ T476] ip (476) used greatest stack depth: 24256 bytes left [ 64.204304][ T477] br0: port 1(veth1) entered disabled state [ 64.305043][ T478] veth2: left allmulticast mode [ 64.305399][ T478] veth2: left promiscuous mode [ 64.305895][ T478] br0: port 2(veth2) entered disabled state [ 64.309129][ T478] veth1: left allmulticast mode [ 64.309497][ T478] veth1: left promiscuous mode [ 64.310039][ T478] br0: port 1(veth1) entered disabled state