[ 83.222405][ T1051] GACT probability NOT on [ 83.261940][ T1049] tc (1049) used greatest stack depth: 23976 bytes left [ 83.409097][ T1053] [ 83.409471][ T1053] ============================= [ 83.409659][ T1053] WARNING: suspicious RCU usage [ 83.409844][ T1053] 6.14.0-rc6-virtme #1 Not tainted [ 83.410011][ T1053] ----------------------------- [ 83.410175][ T1053] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 83.410497][ T1053] [ 83.410497][ T1053] other info that might help us debug this: [ 83.410497][ T1053] [ 83.410817][ T1053] [ 83.410817][ T1053] rcu_scheduler_active = 2, debug_locks = 1 [ 83.411102][ T1053] 1 lock held by mausezahn/1053: [ 83.411295][ T1053] #0: ffffffff95f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 83.411608][ T1053] [ 83.411608][ T1053] stack backtrace: [ 83.411810][ T1053] CPU: 2 UID: 0 PID: 1053 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 83.411815][ T1053] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 83.411817][ T1053] Call Trace: [ 83.411820][ T1053] [ 83.411822][ T1053] dump_stack_lvl+0xb0/0xd0 [ 83.411831][ T1053] lockdep_rcu_suspicious+0x1ea/0x280 [ 83.411844][ T1053] dev_hard_start_xmit+0x2fc/0x3f0 [ 83.411855][ T1053] __dev_queue_xmit+0xfaf/0x18d0 [ 83.411869][ T1053] ? __pfx___dev_queue_xmit+0x10/0x10 [ 83.411873][ T1053] ? packet_parse_headers+0x231/0x9c0 [ 83.411883][ T1053] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 83.411890][ T1053] ? __pfx_packet_parse_headers+0x10/0x10 [ 83.411894][ T1053] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 83.411901][ T1053] ? dev_get_by_index+0xb2/0x190 [ 83.411912][ T1053] packet_snd+0xd0c/0x19d0 [ 83.411924][ T1053] ? __lock_release+0x103/0x460 [ 83.411929][ T1053] ? __might_fault+0x11b/0x170 [ 83.411937][ T1053] ? __pfx_packet_snd+0x10/0x10 [ 83.411940][ T1053] ? trace_lock_acquire+0x14c/0x1f0 [ 83.411942][ T1053] ? __might_fault+0x11b/0x170 [ 83.411949][ T1053] ? lock_acquire+0x32/0xc0 [ 83.411956][ T1053] ? __might_fault+0x11b/0x170 [ 83.411967][ T1053] __sys_sendto+0x3c3/0x450 [ 83.411974][ T1053] ? __pfx___sys_sendto+0x10/0x10 [ 83.411988][ T1053] ? sock_ioctl+0x3b6/0x590 [ 83.411999][ T1053] ? __pfx___up_read+0x10/0x10 [ 83.412008][ T1053] ? do_user_addr_fault+0x374/0xe30 [ 83.412019][ T1053] ? do_user_addr_fault+0x374/0xe30 [ 83.412026][ T1053] __x64_sys_sendto+0xe0/0x1c0 [ 83.412030][ T1053] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 83.412035][ T1053] do_syscall_64+0xc1/0x1d0 [ 83.412043][ T1053] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 83.412050][ T1053] RIP: 0033:0x7f3f484a4a4a [ 83.412055][ T1053] 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 [ 83.412059][ T1053] RSP: 002b:00007fff4813ffb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 83.412062][ T1053] RAX: ffffffffffffffda RBX: 0000000016d569d0 RCX: 00007f3f484a4a4a [ 83.412065][ T1053] RDX: 0000000000000062 RSI: 0000000016d565c2 RDI: 0000000000000005 [ 83.412067][ T1053] RBP: 0000000016d565c2 R08: 00007fff4813ffc0 R09: 0000000000000014 [ 83.412069][ T1053] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.412071][ T1053] R13: 0000000000000062 R14: 00007fff4813ffc0 R15: 0000000000000000 [ 83.412100][ T1053]