[ 11.007367][ T251] ip (251) used greatest stack depth: 24656 bytes left [ 12.762415][ T288] ip (288) used greatest stack depth: 24552 bytes left [ 19.132982][ T311] GACT probability NOT on [ 19.151750][ T308] tc (308) used greatest stack depth: 24384 bytes left [ 19.303432][ T313] [ 19.303695][ T313] ============================= [ 19.304035][ T313] WARNING: suspicious RCU usage [ 19.304201][ T313] 6.14.0-rc6-virtme #1 Not tainted [ 19.304361][ T313] ----------------------------- [ 19.304515][ T313] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 19.304823][ T313] [ 19.304823][ T313] other info that might help us debug this: [ 19.304823][ T313] [ 19.305149][ T313] [ 19.305149][ T313] rcu_scheduler_active = 2, debug_locks = 1 [ 19.305428][ T313] 1 lock held by mausezahn/313: [ 19.305601][ T313] #0: ffffffff8c75b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 19.305916][ T313] [ 19.305916][ T313] stack backtrace: [ 19.306128][ T313] CPU: 0 UID: 0 PID: 313 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 19.306132][ T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.306134][ T313] Call Trace: [ 19.306136][ T313] [ 19.306139][ T313] dump_stack_lvl+0xb0/0xd0 [ 19.306147][ T313] lockdep_rcu_suspicious+0x1ea/0x280 [ 19.306157][ T313] dev_hard_start_xmit+0x2fc/0x3f0 [ 19.306171][ T313] __dev_queue_xmit+0xfaf/0x18d0 [ 19.306185][ T313] ? __pfx___dev_queue_xmit+0x10/0x10 [ 19.306189][ T313] ? packet_parse_headers+0x231/0x9c0 [ 19.306198][ T313] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 19.306204][ T313] ? __pfx_packet_parse_headers+0x10/0x10 [ 19.306208][ T313] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 19.306213][ T313] ? dev_get_by_index+0xb2/0x190 [ 19.306225][ T313] packet_snd+0xd0c/0x19d0 [ 19.306236][ T313] ? __lock_release+0x103/0x460 [ 19.306239][ T313] ? __might_fault+0x11b/0x170 [ 19.306246][ T313] ? __pfx_packet_snd+0x10/0x10 [ 19.306249][ T313] ? trace_lock_acquire+0x14c/0x1f0 [ 19.306251][ T313] ? __might_fault+0x11b/0x170 [ 19.306258][ T313] ? lock_acquire+0x32/0xc0 [ 19.306264][ T313] ? __might_fault+0x11b/0x170 [ 19.306275][ T313] __sys_sendto+0x3c3/0x450 [ 19.306281][ T313] ? __pfx___sys_sendto+0x10/0x10 [ 19.306295][ T313] ? sock_ioctl+0x3b6/0x590 [ 19.306305][ T313] ? __pfx___up_read+0x10/0x10 [ 19.306313][ T313] ? do_user_addr_fault+0x374/0xe30 [ 19.306323][ T313] ? do_user_addr_fault+0x374/0xe30 [ 19.306330][ T313] __x64_sys_sendto+0xe0/0x1c0 [ 19.306334][ T313] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 19.306339][ T313] do_syscall_64+0xc1/0x1d0 [ 19.306347][ T313] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 19.306351][ T313] RIP: 0033:0x7f83cc9efa4a [ 19.306356][ T313] 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 [ 19.306359][ T313] RSP: 002b:00007fff700ccdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 19.306362][ T313] RAX: ffffffffffffffda RBX: 0000000012c459d0 RCX: 00007f83cc9efa4a [ 19.306365][ T313] RDX: 0000000000000062 RSI: 0000000012c455c2 RDI: 0000000000000005 [ 19.306366][ T313] RBP: 0000000012c455c2 R08: 00007fff700ccdc0 R09: 0000000000000014 [ 19.306368][ T313] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 19.306370][ T313] R13: 0000000000000062 R14: 00007fff700ccdc0 R15: 0000000000000000 [ 19.306386][ T313]