[ 10.472119][ T248] modprobe (248) used greatest stack depth: 23792 bytes left [ 15.930329][ T339] 8021q: 802.1Q VLAN Support v1.8 [ 16.277701][ T344] gre: GRE over IPv4 demultiplexor driver [ 16.332674][ T344] ip6_gre: GRE over IPv6 tunneling driver [ 25.601706][ T421] GACT probability NOT on [ 25.983011][ T424] [ 25.983311][ T424] ============================= [ 25.983485][ T424] WARNING: suspicious RCU usage [ 25.983796][ T424] 6.14.0-rc6-virtme #1 Not tainted [ 25.983967][ T424] ----------------------------- [ 25.984161][ T424] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 25.984442][ T424] [ 25.984442][ T424] other info that might help us debug this: [ 25.984442][ T424] [ 25.984760][ T424] [ 25.984760][ T424] rcu_scheduler_active = 2, debug_locks = 1 [ 25.984999][ T424] 1 lock held by mausezahn/424: [ 25.985199][ T424] #0: ffffffffa635b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 25.985503][ T424] [ 25.985503][ T424] stack backtrace: [ 25.985703][ T424] CPU: 3 UID: 0 PID: 424 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 25.985708][ T424] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.985710][ T424] Call Trace: [ 25.985711][ T424] [ 25.985714][ T424] dump_stack_lvl+0xb0/0xd0 [ 25.985721][ T424] lockdep_rcu_suspicious+0x1ea/0x280 [ 25.985732][ T424] dev_hard_start_xmit+0x2fc/0x3f0 [ 25.985742][ T424] __dev_queue_xmit+0xfaf/0x18d0 [ 25.985756][ T424] ? __pfx___dev_queue_xmit+0x10/0x10 [ 25.985760][ T424] ? packet_parse_headers+0x231/0x9c0 [ 25.985769][ T424] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 25.985775][ T424] ? __pfx_packet_parse_headers+0x10/0x10 [ 25.985779][ T424] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 25.985784][ T424] ? dev_get_by_index+0xb2/0x190 [ 25.985795][ T424] packet_snd+0xd0c/0x19d0 [ 25.985807][ T424] ? __lock_release+0x103/0x460 [ 25.985810][ T424] ? __might_fault+0x11b/0x170 [ 25.985817][ T424] ? __pfx_packet_snd+0x10/0x10 [ 25.985819][ T424] ? trace_lock_acquire+0x14c/0x1f0 [ 25.985821][ T424] ? __might_fault+0x11b/0x170 [ 25.985828][ T424] ? lock_acquire+0x32/0xc0 [ 25.985834][ T424] ? __might_fault+0x11b/0x170 [ 25.985845][ T424] __sys_sendto+0x3c3/0x450 [ 25.985851][ T424] ? __pfx___sys_sendto+0x10/0x10 [ 25.985866][ T424] ? sock_ioctl+0x3b6/0x590 [ 25.985875][ T424] ? __pfx___up_read+0x10/0x10 [ 25.985883][ T424] ? do_user_addr_fault+0x374/0xe30 [ 25.985893][ T424] ? do_user_addr_fault+0x374/0xe30 [ 25.985900][ T424] __x64_sys_sendto+0xe0/0x1c0 [ 25.985904][ T424] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 25.985909][ T424] do_syscall_64+0xc1/0x1d0 [ 25.985917][ T424] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 25.985921][ T424] RIP: 0033:0x7f3be0fe5a4a [ 25.985926][ T424] 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 [ 25.985929][ T424] RSP: 002b:00007fff18d42348 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 25.985932][ T424] RAX: ffffffffffffffda RBX: 0000000031a0b9d0 RCX: 00007f3be0fe5a4a [ 25.985934][ T424] RDX: 0000000000000062 RSI: 0000000031a0b5c2 RDI: 0000000000000005 [ 25.985936][ T424] RBP: 0000000031a0b5c2 R08: 00007fff18d42350 R09: 0000000000000014 [ 25.985938][ T424] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 25.985940][ T424] R13: 0000000000000062 R14: 00007fff18d42350 R15: 0000000000000000 [ 25.985956][ T424]