[ 18.021446][ T307] GACT probability NOT on [ 18.262075][ T310] [ 18.262309][ T310] ============================= [ 18.262464][ T310] WARNING: suspicious RCU usage [ 18.262623][ T310] 6.14.0-rc6-virtme #1 Not tainted [ 18.262775][ T310] ----------------------------- [ 18.263060][ T310] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 18.263357][ T310] [ 18.263357][ T310] other info that might help us debug this: [ 18.263357][ T310] [ 18.263647][ T310] [ 18.263647][ T310] rcu_scheduler_active = 2, debug_locks = 1 [ 18.263868][ T310] 1 lock held by mausezahn/310: [ 18.264034][ T310] #0: ffffffffb675b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 18.264318][ T310] [ 18.264318][ T310] stack backtrace: [ 18.264503][ T310] CPU: 0 UID: 0 PID: 310 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 18.264508][ T310] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.264510][ T310] Call Trace: [ 18.264511][ T310] [ 18.264514][ T310] dump_stack_lvl+0xb0/0xd0 [ 18.264521][ T310] lockdep_rcu_suspicious+0x1ea/0x280 [ 18.264532][ T310] dev_hard_start_xmit+0x2fc/0x3f0 [ 18.264542][ T310] __dev_queue_xmit+0xfaf/0x18d0 [ 18.264556][ T310] ? __pfx___dev_queue_xmit+0x10/0x10 [ 18.264560][ T310] ? packet_parse_headers+0x231/0x9c0 [ 18.264569][ T310] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 18.264574][ T310] ? __pfx_packet_parse_headers+0x10/0x10 [ 18.264579][ T310] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 18.264584][ T310] ? dev_get_by_index+0xb2/0x190 [ 18.264595][ T310] packet_snd+0xd0c/0x19d0 [ 18.264606][ T310] ? __lock_release+0x103/0x460 [ 18.264610][ T310] ? __might_fault+0x11b/0x170 [ 18.264616][ T310] ? __pfx_packet_snd+0x10/0x10 [ 18.264619][ T310] ? trace_lock_acquire+0x14c/0x1f0 [ 18.264621][ T310] ? __might_fault+0x11b/0x170 [ 18.264628][ T310] ? lock_acquire+0x32/0xc0 [ 18.264634][ T310] ? __might_fault+0x11b/0x170 [ 18.264645][ T310] __sys_sendto+0x3c3/0x450 [ 18.264650][ T310] ? __pfx___sys_sendto+0x10/0x10 [ 18.264665][ T310] ? sock_ioctl+0x3b6/0x590 [ 18.264675][ T310] ? __pfx___up_read+0x10/0x10 [ 18.264683][ T310] ? do_user_addr_fault+0x374/0xe30 [ 18.264693][ T310] ? do_user_addr_fault+0x374/0xe30 [ 18.264701][ T310] __x64_sys_sendto+0xe0/0x1c0 [ 18.264704][ T310] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 18.264710][ T310] do_syscall_64+0xc1/0x1d0 [ 18.264717][ T310] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 18.264721][ T310] RIP: 0033:0x7f9537cdea4a [ 18.264726][ T310] 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 [ 18.264729][ T310] RSP: 002b:00007ffdd3b48a08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 18.264732][ T310] RAX: ffffffffffffffda RBX: 000000000588b9d0 RCX: 00007f9537cdea4a [ 18.264734][ T310] RDX: 0000000000000062 RSI: 000000000588b5c2 RDI: 0000000000000005 [ 18.264736][ T310] RBP: 000000000588b5c2 R08: 00007ffdd3b48a10 R09: 0000000000000014 [ 18.264738][ T310] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 18.264740][ T310] R13: 0000000000000062 R14: 00007ffdd3b48a10 R15: 0000000000000000 [ 18.264756][ T310] [ 34.209901][ T711] 8021q: 802.1Q VLAN Support v1.8 [ 34.230678][ T710] ip (710) used greatest stack depth: 24072 bytes left