[ 49.094093][ T570] GACT probability NOT on [ 49.266966][ T572] [ 49.267309][ T572] ============================= [ 49.267481][ T572] WARNING: suspicious RCU usage [ 49.267637][ T572] 6.14.0-rc6-virtme #1 Not tainted [ 49.267804][ T572] ----------------------------- [ 49.267957][ T572] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 49.268288][ T572] [ 49.268288][ T572] other info that might help us debug this: [ 49.268288][ T572] [ 49.268609][ T572] [ 49.268609][ T572] rcu_scheduler_active = 2, debug_locks = 1 [ 49.268836][ T572] 1 lock held by mausezahn/572: [ 49.269010][ T572] #0: ffffffff98f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 49.269344][ T572] [ 49.269344][ T572] stack backtrace: [ 49.269541][ T572] CPU: 0 UID: 0 PID: 572 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 49.269546][ T572] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 49.269548][ T572] Call Trace: [ 49.269551][ T572] [ 49.269554][ T572] dump_stack_lvl+0xb0/0xd0 [ 49.269562][ T572] lockdep_rcu_suspicious+0x1ea/0x280 [ 49.269575][ T572] dev_hard_start_xmit+0x2fc/0x3f0 [ 49.269585][ T572] __dev_queue_xmit+0xfaf/0x18d0 [ 49.269600][ T572] ? __pfx___dev_queue_xmit+0x10/0x10 [ 49.269604][ T572] ? packet_parse_headers+0x231/0x9c0 [ 49.269613][ T572] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 49.269620][ T572] ? __pfx_packet_parse_headers+0x10/0x10 [ 49.269625][ T572] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 49.269631][ T572] ? dev_get_by_index+0xb2/0x190 [ 49.269643][ T572] packet_snd+0xd0c/0x19d0 [ 49.269655][ T572] ? __lock_release+0x103/0x460 [ 49.269659][ T572] ? __might_fault+0x11b/0x170 [ 49.269667][ T572] ? __pfx_packet_snd+0x10/0x10 [ 49.269669][ T572] ? trace_lock_acquire+0x14c/0x1f0 [ 49.269671][ T572] ? __might_fault+0x11b/0x170 [ 49.269678][ T572] ? lock_acquire+0x32/0xc0 [ 49.269684][ T572] ? __might_fault+0x11b/0x170 [ 49.269696][ T572] __sys_sendto+0x3c3/0x450 [ 49.269702][ T572] ? __pfx___sys_sendto+0x10/0x10 [ 49.269716][ T572] ? sock_ioctl+0x3b6/0x590 [ 49.269727][ T572] ? __pfx___up_read+0x10/0x10 [ 49.269736][ T572] ? do_user_addr_fault+0x374/0xe30 [ 49.269747][ T572] ? do_user_addr_fault+0x374/0xe30 [ 49.269754][ T572] __x64_sys_sendto+0xe0/0x1c0 [ 49.269758][ T572] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 49.269764][ T572] do_syscall_64+0xc1/0x1d0 [ 49.269773][ T572] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.269779][ T572] RIP: 0033:0x7f23c1ad2a4a [ 49.269784][ T572] 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 [ 49.269788][ T572] RSP: 002b:00007fff3c8d43b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 49.269792][ T572] RAX: ffffffffffffffda RBX: 0000000022e859d0 RCX: 00007f23c1ad2a4a [ 49.269794][ T572] RDX: 0000000000000062 RSI: 0000000022e855c2 RDI: 0000000000000005 [ 49.269796][ T572] RBP: 0000000022e855c2 R08: 00007fff3c8d43c0 R09: 0000000000000014 [ 49.269798][ T572] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 49.269800][ T572] R13: 0000000000000062 R14: 00007fff3c8d43c0 R15: 0000000000000000 [ 49.269816][ T572]