[ 10.581897][ T252] ip (252) used greatest stack depth: 23888 bytes left [ 21.037854][ T349] GACT probability NOT on [ 21.182427][ T352] [ 21.182761][ T352] ============================= [ 21.183142][ T352] WARNING: suspicious RCU usage [ 21.183301][ T352] 6.14.0-rc6-virtme #1 Not tainted [ 21.183468][ T352] ----------------------------- [ 21.183628][ T352] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 21.183894][ T352] [ 21.183894][ T352] other info that might help us debug this: [ 21.183894][ T352] [ 21.184210][ T352] [ 21.184210][ T352] rcu_scheduler_active = 2, debug_locks = 1 [ 21.184440][ T352] 1 lock held by mausezahn/352: [ 21.184598][ T352] #0: ffffffffa5f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 21.184904][ T352] [ 21.184904][ T352] stack backtrace: [ 21.185110][ T352] CPU: 0 UID: 0 PID: 352 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 21.185115][ T352] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.185118][ T352] Call Trace: [ 21.185120][ T352] [ 21.185123][ T352] dump_stack_lvl+0xb0/0xd0 [ 21.185132][ T352] lockdep_rcu_suspicious+0x1ea/0x280 [ 21.185144][ T352] dev_hard_start_xmit+0x2fc/0x3f0 [ 21.185155][ T352] __dev_queue_xmit+0xfaf/0x18d0 [ 21.185169][ T352] ? __pfx___dev_queue_xmit+0x10/0x10 [ 21.185173][ T352] ? packet_parse_headers+0x231/0x9c0 [ 21.185182][ T352] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 21.185189][ T352] ? __pfx_packet_parse_headers+0x10/0x10 [ 21.185194][ T352] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 21.185201][ T352] ? dev_get_by_index+0xb2/0x190 [ 21.185213][ T352] packet_snd+0xd0c/0x19d0 [ 21.185224][ T352] ? __lock_release+0x103/0x460 [ 21.185228][ T352] ? __might_fault+0x11b/0x170 [ 21.185236][ T352] ? __pfx_packet_snd+0x10/0x10 [ 21.185239][ T352] ? trace_lock_acquire+0x14c/0x1f0 [ 21.185241][ T352] ? __might_fault+0x11b/0x170 [ 21.185248][ T352] ? lock_acquire+0x32/0xc0 [ 21.185254][ T352] ? __might_fault+0x11b/0x170 [ 21.185266][ T352] __sys_sendto+0x3c3/0x450 [ 21.185273][ T352] ? __pfx___sys_sendto+0x10/0x10 [ 21.185287][ T352] ? sock_ioctl+0x3b6/0x590 [ 21.185298][ T352] ? __pfx___up_read+0x10/0x10 [ 21.185308][ T352] ? do_user_addr_fault+0x374/0xe30 [ 21.185319][ T352] ? do_user_addr_fault+0x374/0xe30 [ 21.185326][ T352] __x64_sys_sendto+0xe0/0x1c0 [ 21.185331][ T352] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 21.185336][ T352] do_syscall_64+0xc1/0x1d0 [ 21.185345][ T352] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 21.185351][ T352] RIP: 0033:0x7f83b0da7a4a [ 21.185357][ T352] 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 [ 21.185360][ T352] RSP: 002b:00007ffd2d0ee728 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 21.185364][ T352] RAX: ffffffffffffffda RBX: 0000000034d619d0 RCX: 00007f83b0da7a4a [ 21.185366][ T352] RDX: 0000000000000062 RSI: 0000000034d615c2 RDI: 0000000000000005 [ 21.185368][ T352] RBP: 0000000034d615c2 R08: 00007ffd2d0ee730 R09: 0000000000000014 [ 21.185370][ T352] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 21.185372][ T352] R13: 0000000000000062 R14: 00007ffd2d0ee730 R15: 0000000000000000 [ 21.185398][ T352] [ 24.985965][ T441] Mirror/redirect action on [ 35.714182][ T678] tc (678) used greatest stack depth: 23440 bytes left