[ 12.221560][ T286] veth0: entered allmulticast mode [ 12.223036][ T286] veth1: entered allmulticast mode [ 12.223674][ T286] veth2: entered allmulticast mode [ 12.225135][ T286] veth3: entered allmulticast mode [ 12.225810][ T286] veth4: entered allmulticast mode [ 12.226754][ T286] veth5: entered allmulticast mode [ 23.412194][ T372] GACT probability NOT on [ 23.767668][ T376] [ 23.768153][ T376] ============================= [ 23.768731][ T376] WARNING: suspicious RCU usage [ 23.769002][ T376] 6.14.0-rc6-virtme #1 Not tainted [ 23.769300][ T376] ----------------------------- [ 23.769567][ T376] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.769999][ T376] [ 23.769999][ T376] other info that might help us debug this: [ 23.769999][ T376] [ 23.770519][ T376] [ 23.770519][ T376] rcu_scheduler_active = 2, debug_locks = 1 [ 23.770887][ T376] 1 lock held by mausezahn/376: [ 23.771154][ T376] #0: ffffffff97f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.771646][ T376] [ 23.771646][ T376] stack backtrace: [ 23.771977][ T376] CPU: 2 UID: 0 PID: 376 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.771985][ T376] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.771988][ T376] Call Trace: [ 23.771991][ T376] [ 23.771995][ T376] dump_stack_lvl+0xb0/0xd0 [ 23.772008][ T376] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.772027][ T376] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.772047][ T376] __dev_queue_xmit+0xfaf/0x18d0 [ 23.772073][ T376] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.772080][ T376] ? packet_parse_headers+0x231/0x9c0 [ 23.772101][ T376] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.772111][ T376] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.772120][ T376] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.772130][ T376] ? dev_get_by_index+0xb2/0x190 [ 23.772151][ T376] packet_snd+0xd0c/0x19d0 [ 23.772173][ T376] ? __lock_release+0x103/0x460 [ 23.772180][ T376] ? __might_fault+0x11b/0x170 [ 23.772192][ T376] ? __pfx_packet_snd+0x10/0x10 [ 23.772196][ T376] ? trace_lock_acquire+0x14c/0x1f0 [ 23.772201][ T376] ? __might_fault+0x11b/0x170 [ 23.772214][ T376] ? lock_acquire+0x32/0xc0 [ 23.772226][ T376] ? __might_fault+0x11b/0x170 [ 23.772247][ T376] __sys_sendto+0x3c3/0x450 [ 23.772257][ T376] ? __pfx___sys_sendto+0x10/0x10 [ 23.772286][ T376] ? sock_ioctl+0x3b6/0x590 [ 23.772304][ T376] ? __pfx___up_read+0x10/0x10 [ 23.772319][ T376] ? do_user_addr_fault+0x374/0xe30 [ 23.772338][ T376] ? do_user_addr_fault+0x374/0xe30 [ 23.772351][ T376] __x64_sys_sendto+0xe0/0x1c0 [ 23.772358][ T376] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.772368][ T376] do_syscall_64+0xc1/0x1d0 [ 23.772380][ T376] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.772389][ T376] RIP: 0033:0x7fb1fee39a4a [ 23.772397][ T376] 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 [ 23.772402][ T376] RSP: 002b:00007ffd2d8673c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.772409][ T376] RAX: ffffffffffffffda RBX: 00000000070099d0 RCX: 00007fb1fee39a4a [ 23.772412][ T376] RDX: 00000000000000aa RSI: 0000000007009d02 RDI: 0000000000000005 [ 23.772415][ T376] RBP: 0000000007009d02 R08: 00007ffd2d8673d0 R09: 0000000000000014 [ 23.772418][ T376] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.772421][ T376] R13: 00000000000000aa R14: 00007ffd2d8673d0 R15: 0000000000000000 [ 23.772452][ T376] [ 39.584828][ T286] veth0: left allmulticast mode [ 39.585202][ T286] veth1: left allmulticast mode [ 39.585453][ T286] veth2: left allmulticast mode [ 39.585698][ T286] veth3: left allmulticast mode [ 39.585935][ T286] veth4: left allmulticast mode [ 39.586198][ T286] veth5: left allmulticast mode