[ 66.006979][ T863] gre: GRE over IPv4 demultiplexor driver [ 66.053023][ T863] ip6_gre: GRE over IPv6 tunneling driver [ 76.106921][ T947] GACT probability NOT on [ 76.517130][ T950] [ 76.517437][ T950] ============================= [ 76.517611][ T950] WARNING: suspicious RCU usage [ 76.517811][ T950] 6.14.0-rc6-virtme #1 Not tainted [ 76.517974][ T950] ----------------------------- [ 76.518360][ T950] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 76.518657][ T950] [ 76.518657][ T950] other info that might help us debug this: [ 76.518657][ T950] [ 76.519005][ T950] [ 76.519005][ T950] rcu_scheduler_active = 2, debug_locks = 1 [ 76.519282][ T950] 1 lock held by mausezahn/950: [ 76.519455][ T950] #0: ffffffff96f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 76.519764][ T950] [ 76.519764][ T950] stack backtrace: [ 76.519980][ T950] CPU: 2 UID: 0 PID: 950 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 76.519984][ T950] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 76.519986][ T950] Call Trace: [ 76.519988][ T950] [ 76.519991][ T950] dump_stack_lvl+0xb0/0xd0 [ 76.519998][ T950] lockdep_rcu_suspicious+0x1ea/0x280 [ 76.520009][ T950] dev_hard_start_xmit+0x2fc/0x3f0 [ 76.520019][ T950] __dev_queue_xmit+0xfaf/0x18d0 [ 76.520033][ T950] ? __pfx___dev_queue_xmit+0x10/0x10 [ 76.520038][ T950] ? packet_parse_headers+0x231/0x9c0 [ 76.520050][ T950] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 76.520057][ T950] ? __pfx_packet_parse_headers+0x10/0x10 [ 76.520064][ T950] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 76.520069][ T950] ? dev_get_by_index+0xb2/0x190 [ 76.520080][ T950] packet_snd+0xd0c/0x19d0 [ 76.520092][ T950] ? __lock_release+0x103/0x460 [ 76.520095][ T950] ? __might_fault+0x11b/0x170 [ 76.520103][ T950] ? __pfx_packet_snd+0x10/0x10 [ 76.520105][ T950] ? trace_lock_acquire+0x14c/0x1f0 [ 76.520107][ T950] ? __might_fault+0x11b/0x170 [ 76.520114][ T950] ? lock_acquire+0x32/0xc0 [ 76.520120][ T950] ? __might_fault+0x11b/0x170 [ 76.520131][ T950] __sys_sendto+0x3c3/0x450 [ 76.520137][ T950] ? __pfx___sys_sendto+0x10/0x10 [ 76.520151][ T950] ? sock_ioctl+0x3b6/0x590 [ 76.520161][ T950] ? __pfx___up_read+0x10/0x10 [ 76.520169][ T950] ? do_user_addr_fault+0x374/0xe30 [ 76.520183][ T950] ? do_user_addr_fault+0x374/0xe30 [ 76.520190][ T950] __x64_sys_sendto+0xe0/0x1c0 [ 76.520194][ T950] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 76.520199][ T950] do_syscall_64+0xc1/0x1d0 [ 76.520207][ T950] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.520211][ T950] RIP: 0033:0x7f5eaabfea4a [ 76.520215][ T950] 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 [ 76.520218][ T950] RSP: 002b:00007ffc22190f48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 76.520222][ T950] RAX: ffffffffffffffda RBX: 00000000291559d0 RCX: 00007f5eaabfea4a [ 76.520224][ T950] RDX: 0000000000000062 RSI: 00000000291555c2 RDI: 0000000000000005 [ 76.520226][ T950] RBP: 00000000291555c2 R08: 00007ffc22190f50 R09: 0000000000000014 [ 76.520228][ T950] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.520230][ T950] R13: 0000000000000062 R14: 00007ffc22190f50 R15: 0000000000000000 [ 76.520246][ T950]