[ 10.410154][ T251] ip (251) used greatest stack depth: 24056 bytes left [ 17.064482][ T357] 8021q: 802.1Q VLAN Support v1.8 [ 17.498184][ T363] gre: GRE over IPv4 demultiplexor driver [ 17.556424][ T363] ip6_gre: GRE over IPv6 tunneling driver [ 19.351552][ T389] ip (389) used greatest stack depth: 24000 bytes left [ 27.419799][ T446] GACT probability NOT on [ 27.788257][ T449] [ 27.788624][ T449] ============================= [ 27.789089][ T449] WARNING: suspicious RCU usage [ 27.789332][ T449] 6.14.0-rc6-virtme #1 Not tainted [ 27.789533][ T449] ----------------------------- [ 27.789756][ T449] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 27.790175][ T449] [ 27.790175][ T449] other info that might help us debug this: [ 27.790175][ T449] [ 27.790542][ T449] [ 27.790542][ T449] rcu_scheduler_active = 2, debug_locks = 1 [ 27.790841][ T449] 1 lock held by mausezahn/449: [ 27.791012][ T449] #0: ffffffffadb5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 27.791340][ T449] [ 27.791340][ T449] stack backtrace: [ 27.791606][ T449] CPU: 2 UID: 0 PID: 449 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 27.791611][ T449] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.791613][ T449] Call Trace: [ 27.791615][ T449] [ 27.791618][ T449] dump_stack_lvl+0xb0/0xd0 [ 27.791627][ T449] lockdep_rcu_suspicious+0x1ea/0x280 [ 27.791639][ T449] dev_hard_start_xmit+0x2fc/0x3f0 [ 27.791651][ T449] __dev_queue_xmit+0xfaf/0x18d0 [ 27.791666][ T449] ? __pfx___dev_queue_xmit+0x10/0x10 [ 27.791670][ T449] ? packet_parse_headers+0x231/0x9c0 [ 27.791680][ T449] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 27.791686][ T449] ? __pfx_packet_parse_headers+0x10/0x10 [ 27.791691][ T449] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 27.791700][ T449] ? dev_get_by_index+0xb2/0x190 [ 27.791717][ T449] packet_snd+0xd0c/0x19d0 [ 27.791738][ T449] ? __lock_release+0x103/0x460 [ 27.791744][ T449] ? __might_fault+0x11b/0x170 [ 27.791755][ T449] ? __pfx_packet_snd+0x10/0x10 [ 27.791759][ T449] ? trace_lock_acquire+0x14c/0x1f0 [ 27.791764][ T449] ? __might_fault+0x11b/0x170 [ 27.791776][ T449] ? lock_acquire+0x32/0xc0 [ 27.791788][ T449] ? __might_fault+0x11b/0x170 [ 27.791808][ T449] __sys_sendto+0x3c3/0x450 [ 27.791818][ T449] ? __pfx___sys_sendto+0x10/0x10 [ 27.791832][ T449] ? sock_ioctl+0x3b6/0x590 [ 27.791844][ T449] ? rseq_update_cpu_node_id+0xe6/0x140 [ 27.791852][ T449] ? __rseq_handle_notify_resume+0x288/0x3e0 [ 27.791859][ T449] ? __pfx___rseq_handle_notify_resume+0x10/0x10 [ 27.791869][ T449] __x64_sys_sendto+0xe0/0x1c0 [ 27.791873][ T449] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 27.791878][ T449] do_syscall_64+0xc1/0x1d0 [ 27.791887][ T449] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 27.791893][ T449] RIP: 0033:0x7fac35931a4a [ 27.791898][ T449] 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 [ 27.791901][ T449] RSP: 002b:00007ffdafcde8e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 27.791905][ T449] RAX: ffffffffffffffda RBX: 0000000026c5c9d0 RCX: 00007fac35931a4a [ 27.791908][ T449] RDX: 0000000000000062 RSI: 0000000026c5c5c2 RDI: 0000000000000005 [ 27.791910][ T449] RBP: 0000000026c5c5c2 R08: 00007ffdafcde8f0 R09: 0000000000000014 [ 27.791911][ T449] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 27.791913][ T449] R13: 0000000000000062 R14: 00007ffdafcde8f0 R15: 0000000000000000 [ 27.791929][ T449] [ 44.178133][ T659] ip (659) used greatest stack depth: 23432 bytes left