[ 52.009111][ T626] GACT probability NOT on [ 52.672126][ T633] [ 52.672491][ T633] ============================= [ 52.672881][ T633] WARNING: suspicious RCU usage [ 52.673064][ T633] 6.14.0-rc6-virtme #1 Not tainted [ 52.673281][ T633] ----------------------------- [ 52.673477][ T633] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 52.673770][ T633] [ 52.673770][ T633] other info that might help us debug this: [ 52.673770][ T633] [ 52.674103][ T633] [ 52.674103][ T633] rcu_scheduler_active = 2, debug_locks = 1 [ 52.674374][ T633] 1 lock held by mausezahn/633: [ 52.674558][ T633] #0: ffffffffab55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 52.674893][ T633] [ 52.674893][ T633] stack backtrace: [ 52.675112][ T633] CPU: 2 UID: 0 PID: 633 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 52.675116][ T633] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 52.675118][ T633] Call Trace: [ 52.675120][ T633] [ 52.675123][ T633] dump_stack_lvl+0xb0/0xd0 [ 52.675132][ T633] lockdep_rcu_suspicious+0x1ea/0x280 [ 52.675147][ T633] dev_hard_start_xmit+0x2fc/0x3f0 [ 52.675157][ T633] __dev_queue_xmit+0xfaf/0x18d0 [ 52.675172][ T633] ? __pfx___dev_queue_xmit+0x10/0x10 [ 52.675176][ T633] ? packet_parse_headers+0x231/0x9c0 [ 52.675186][ T633] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 52.675192][ T633] ? __pfx_packet_parse_headers+0x10/0x10 [ 52.675197][ T633] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 52.675203][ T633] ? dev_get_by_index+0xb2/0x190 [ 52.675215][ T633] packet_snd+0xd0c/0x19d0 [ 52.675227][ T633] ? __lock_release+0x103/0x460 [ 52.675230][ T633] ? __might_fault+0x11b/0x170 [ 52.675239][ T633] ? __pfx_packet_snd+0x10/0x10 [ 52.675241][ T633] ? trace_lock_acquire+0x14c/0x1f0 [ 52.675244][ T633] ? __might_fault+0x11b/0x170 [ 52.675251][ T633] ? lock_acquire+0x32/0xc0 [ 52.675257][ T633] ? __might_fault+0x11b/0x170 [ 52.675268][ T633] __sys_sendto+0x3c3/0x450 [ 52.675276][ T633] ? __pfx___sys_sendto+0x10/0x10 [ 52.675290][ T633] ? sock_ioctl+0x3b6/0x590 [ 52.675295][ T633] ? __pfx___lock_release+0x10/0x10 [ 52.675303][ T633] ? __pfx___up_read+0x10/0x10 [ 52.675314][ T633] ? do_user_addr_fault+0x972/0xe30 [ 52.675324][ T633] ? do_user_addr_fault+0x97c/0xe30 [ 52.675331][ T633] __x64_sys_sendto+0xe0/0x1c0 [ 52.675335][ T633] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 52.675341][ T633] do_syscall_64+0xc1/0x1d0 [ 52.675349][ T633] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 52.675355][ T633] RIP: 0033:0x7f8dc4dcda4a [ 52.675361][ T633] 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 [ 52.675363][ T633] RSP: 002b:00007fff35ee04e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 52.675367][ T633] RAX: ffffffffffffffda RBX: 000000003febc9d0 RCX: 00007f8dc4dcda4a [ 52.675370][ T633] RDX: 00000000000003c4 RSI: 000000003febd022 RDI: 0000000000000005 [ 52.675372][ T633] RBP: 000000003febd022 R08: 00007fff35ee04f0 R09: 0000000000000014 [ 52.675374][ T633] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 52.675376][ T633] R13: 00000000000003c4 R14: 00007fff35ee04f0 R15: 0000000000000000 [ 52.675392][ T633]