[ 17.153864][ T355] 8021q: 802.1Q VLAN Support v1.8 [ 17.613456][ T361] gre: GRE over IPv4 demultiplexor driver [ 17.665941][ T361] ip6_gre: GRE over IPv6 tunneling driver [ 27.718013][ T445] GACT probability NOT on [ 28.110807][ T448] [ 28.111098][ T448] ============================= [ 28.111604][ T448] WARNING: suspicious RCU usage [ 28.111780][ T448] 6.14.0-rc6-virtme #1 Not tainted [ 28.111977][ T448] ----------------------------- [ 28.112153][ T448] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 28.112455][ T448] [ 28.112455][ T448] other info that might help us debug this: [ 28.112455][ T448] [ 28.112775][ T448] [ 28.112775][ T448] rcu_scheduler_active = 2, debug_locks = 1 [ 28.113026][ T448] 1 lock held by mausezahn/448: [ 28.113220][ T448] #0: ffffffffad55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 28.113533][ T448] [ 28.113533][ T448] stack backtrace: [ 28.113746][ T448] CPU: 3 UID: 0 PID: 448 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 28.113750][ T448] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.113753][ T448] Call Trace: [ 28.113755][ T448] [ 28.113758][ T448] dump_stack_lvl+0xb0/0xd0 [ 28.113766][ T448] lockdep_rcu_suspicious+0x1ea/0x280 [ 28.113778][ T448] dev_hard_start_xmit+0x2fc/0x3f0 [ 28.113788][ T448] __dev_queue_xmit+0xfaf/0x18d0 [ 28.113803][ T448] ? __pfx___dev_queue_xmit+0x10/0x10 [ 28.113807][ T448] ? packet_parse_headers+0x231/0x9c0 [ 28.113817][ T448] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 28.113823][ T448] ? __pfx_packet_parse_headers+0x10/0x10 [ 28.113828][ T448] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 28.113834][ T448] ? dev_get_by_index+0xb2/0x190 [ 28.113846][ T448] packet_snd+0xd0c/0x19d0 [ 28.113858][ T448] ? __lock_release+0x103/0x460 [ 28.113862][ T448] ? __might_fault+0x11b/0x170 [ 28.113870][ T448] ? __pfx_packet_snd+0x10/0x10 [ 28.113872][ T448] ? trace_lock_acquire+0x14c/0x1f0 [ 28.113874][ T448] ? __might_fault+0x11b/0x170 [ 28.113881][ T448] ? lock_acquire+0x32/0xc0 [ 28.113887][ T448] ? __might_fault+0x11b/0x170 [ 28.113898][ T448] __sys_sendto+0x3c3/0x450 [ 28.113905][ T448] ? __pfx___sys_sendto+0x10/0x10 [ 28.113919][ T448] ? sock_ioctl+0x3b6/0x590 [ 28.113930][ T448] ? __pfx___up_read+0x10/0x10 [ 28.113940][ T448] ? do_user_addr_fault+0x374/0xe30 [ 28.113951][ T448] ? do_user_addr_fault+0x374/0xe30 [ 28.113959][ T448] __x64_sys_sendto+0xe0/0x1c0 [ 28.113962][ T448] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 28.113968][ T448] do_syscall_64+0xc1/0x1d0 [ 28.113976][ T448] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 28.113982][ T448] RIP: 0033:0x7fb235078a4a [ 28.113987][ T448] 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 [ 28.113990][ T448] RSP: 002b:00007ffe3affddb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 28.113994][ T448] RAX: ffffffffffffffda RBX: 000000000cdc69d0 RCX: 00007fb235078a4a [ 28.113996][ T448] RDX: 0000000000000062 RSI: 000000000cdc65c2 RDI: 0000000000000005 [ 28.113998][ T448] RBP: 000000000cdc65c2 R08: 00007ffe3affddc0 R09: 0000000000000014 [ 28.114000][ T448] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 28.114002][ T448] R13: 0000000000000062 R14: 00007ffe3affddc0 R15: 0000000000000000 [ 28.114018][ T448] [ 29.850385][ T471] tc (471) used greatest stack depth: 23552 bytes left