[ 14.409857][ T319] br0: port 1(veth1) entered blocking state [ 14.410671][ T319] br0: port 1(veth1) entered disabled state [ 14.411076][ T319] veth1: entered allmulticast mode [ 14.421077][ T319] veth1: entered promiscuous mode [ 14.511761][ T321] br0: port 2(veth2) entered blocking state [ 14.512064][ T321] br0: port 2(veth2) entered disabled state [ 14.512373][ T321] veth2: entered allmulticast mode [ 14.514427][ T321] veth2: entered promiscuous mode [ 14.591936][ T322] br0: port 3(veth4) entered blocking state [ 14.592344][ T322] br0: port 3(veth4) entered disabled state [ 14.592974][ T322] veth4: entered allmulticast mode [ 14.595836][ T322] veth4: entered promiscuous mode [ 15.204709][ T41] br0: port 1(veth1) entered blocking state [ 15.205244][ T41] br0: port 1(veth1) entered forwarding state [ 15.277115][ T46] br0: port 2(veth2) entered blocking state [ 15.277472][ T46] br0: port 2(veth2) entered forwarding state [ 15.364890][ T46] br0: port 3(veth4) entered blocking state [ 15.365263][ T46] br0: port 3(veth4) entered forwarding state [ 30.641920][ T389] veth3: entered promiscuous mode [ 31.117936][ T395] GACT probability NOT on [ 31.274826][ T396] [ 31.275349][ T396] ============================= [ 31.275677][ T396] WARNING: suspicious RCU usage [ 31.275984][ T396] 6.14.0-rc6-virtme #1 Not tainted [ 31.276304][ T396] ----------------------------- [ 31.276592][ T396] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 31.277059][ T396] [ 31.277059][ T396] other info that might help us debug this: [ 31.277059][ T396] [ 31.277621][ T396] [ 31.277621][ T396] rcu_scheduler_active = 2, debug_locks = 1 [ 31.278044][ T396] 1 lock held by mausezahn/396: [ 31.278355][ T396] #0: ffffffffa2b5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 31.278865][ T396] [ 31.278865][ T396] stack backtrace: [ 31.279240][ T396] CPU: 2 UID: 0 PID: 396 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 31.279247][ T396] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.279250][ T396] Call Trace: [ 31.279253][ T396] [ 31.279257][ T396] dump_stack_lvl+0xb0/0xd0 [ 31.279269][ T396] lockdep_rcu_suspicious+0x1ea/0x280 [ 31.279287][ T396] dev_hard_start_xmit+0x2fc/0x3f0 [ 31.279308][ T396] __dev_queue_xmit+0xfaf/0x18d0 [ 31.279337][ T396] ? __pfx___dev_queue_xmit+0x10/0x10 [ 31.279345][ T396] ? packet_parse_headers+0x231/0x9c0 [ 31.279361][ T396] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 31.279371][ T396] ? __pfx_packet_parse_headers+0x10/0x10 [ 31.279380][ T396] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 31.279390][ T396] ? dev_get_by_index+0xb2/0x190 [ 31.279411][ T396] packet_snd+0xd0c/0x19d0 [ 31.279433][ T396] ? __lock_release+0x103/0x460 [ 31.279439][ T396] ? __might_fault+0x11b/0x170 [ 31.279450][ T396] ? __pfx_packet_snd+0x10/0x10 [ 31.279455][ T396] ? trace_lock_acquire+0x14c/0x1f0 [ 31.279459][ T396] ? __might_fault+0x11b/0x170 [ 31.279473][ T396] ? lock_acquire+0x32/0xc0 [ 31.279486][ T396] ? __might_fault+0x11b/0x170 [ 31.279508][ T396] __sys_sendto+0x3c3/0x450 [ 31.279518][ T396] ? __pfx___sys_sendto+0x10/0x10 [ 31.279547][ T396] ? sock_ioctl+0x3b6/0x590 [ 31.279565][ T396] ? __pfx___up_read+0x10/0x10 [ 31.279579][ T396] ? do_user_addr_fault+0x374/0xe30 [ 31.279595][ T396] ? do_user_addr_fault+0x374/0xe30 [ 31.279608][ T396] __x64_sys_sendto+0xe0/0x1c0 [ 31.279616][ T396] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 31.279626][ T396] do_syscall_64+0xc1/0x1d0 [ 31.279638][ T396] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.279645][ T396] RIP: 0033:0x7fe124bcda4a [ 31.279651][ T396] 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 [ 31.279655][ T396] RSP: 002b:00007fffe2b07918 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 31.279660][ T396] RAX: ffffffffffffffda RBX: 00000000323ea9d0 RCX: 00007fe124bcda4a [ 31.279663][ T396] RDX: 0000000000000062 RSI: 00000000323ea5c2 RDI: 0000000000000005 [ 31.279666][ T396] RBP: 00000000323ea5c2 R08: 00007fffe2b07920 R09: 0000000000000014 [ 31.279669][ T396] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 31.279672][ T396] R13: 0000000000000062 R14: 00007fffe2b07920 R15: 0000000000000000 [ 31.279704][ T396] [ 32.795578][ T402] veth3: left promiscuous mode [ 32.876383][ T403] veth3: entered promiscuous mode [ 34.716851][ T412] veth3: left promiscuous mode [ 34.871934][ T420] br0: port 3(veth4) entered disabled state [ 34.881880][ T420] ip (420) used greatest stack depth: 23840 bytes left [ 34.978855][ T421] br0: port 2(veth2) entered disabled state [ 35.072819][ T422] br0: port 1(veth1) entered disabled state [ 35.158667][ T423] veth4: left allmulticast mode [ 35.158952][ T423] veth4: left promiscuous mode [ 35.159319][ T423] br0: port 3(veth4) entered disabled state [ 35.161038][ T423] veth2: left allmulticast mode [ 35.161287][ T423] veth2: left promiscuous mode [ 35.161618][ T423] br0: port 2(veth2) entered disabled state [ 35.163235][ T423] veth1: left allmulticast mode [ 35.163463][ T423] veth1: left promiscuous mode [ 35.163812][ T423] br0: port 1(veth1) entered disabled state