[ 63.438610][ T841] gre: GRE over IPv4 demultiplexor driver [ 63.505092][ T841] ip6_gre: GRE over IPv6 tunneling driver [ 73.332624][ T919] GACT probability NOT on [ 73.724362][ T922] [ 73.724714][ T922] ============================= [ 73.724879][ T922] WARNING: suspicious RCU usage [ 73.725038][ T922] 6.14.0-rc6-virtme #1 Not tainted [ 73.725536][ T922] ----------------------------- [ 73.725724][ T922] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 73.725980][ T922] [ 73.725980][ T922] other info that might help us debug this: [ 73.725980][ T922] [ 73.726296][ T922] [ 73.726296][ T922] rcu_scheduler_active = 2, debug_locks = 1 [ 73.726564][ T922] 1 lock held by mausezahn/922: [ 73.726752][ T922] #0: ffffffffa695b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 73.727224][ T922] [ 73.727224][ T922] stack backtrace: [ 73.727523][ T922] CPU: 0 UID: 0 PID: 922 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 73.727530][ T922] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 73.727533][ T922] Call Trace: [ 73.727536][ T922] [ 73.727540][ T922] dump_stack_lvl+0xb0/0xd0 [ 73.727553][ T922] lockdep_rcu_suspicious+0x1ea/0x280 [ 73.727571][ T922] dev_hard_start_xmit+0x2fc/0x3f0 [ 73.727591][ T922] __dev_queue_xmit+0xfaf/0x18d0 [ 73.727618][ T922] ? __pfx___dev_queue_xmit+0x10/0x10 [ 73.727626][ T922] ? packet_parse_headers+0x231/0x9c0 [ 73.727643][ T922] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 73.727652][ T922] ? __pfx_packet_parse_headers+0x10/0x10 [ 73.727659][ T922] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 73.727668][ T922] ? dev_get_by_index+0xb2/0x190 [ 73.727689][ T922] packet_snd+0xd0c/0x19d0 [ 73.727712][ T922] ? __lock_release+0x103/0x460 [ 73.727718][ T922] ? __might_fault+0x11b/0x170 [ 73.727731][ T922] ? __pfx_packet_snd+0x10/0x10 [ 73.727735][ T922] ? trace_lock_acquire+0x14c/0x1f0 [ 73.727739][ T922] ? __might_fault+0x11b/0x170 [ 73.727752][ T922] ? lock_acquire+0x32/0xc0 [ 73.727764][ T922] ? __might_fault+0x11b/0x170 [ 73.727784][ T922] __sys_sendto+0x3c3/0x450 [ 73.727795][ T922] ? __pfx___sys_sendto+0x10/0x10 [ 73.727820][ T922] ? sock_ioctl+0x3b6/0x590 [ 73.727835][ T922] ? __pfx___up_read+0x10/0x10 [ 73.727848][ T922] ? do_user_addr_fault+0x374/0xe30 [ 73.727865][ T922] ? do_user_addr_fault+0x374/0xe30 [ 73.727877][ T922] __x64_sys_sendto+0xe0/0x1c0 [ 73.727884][ T922] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 73.727892][ T922] do_syscall_64+0xc1/0x1d0 [ 73.727904][ T922] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 73.727912][ T922] RIP: 0033:0x7fd0e190ba4a [ 73.727919][ T922] 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 [ 73.727924][ T922] RSP: 002b:00007ffc0f31c8d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 73.727929][ T922] RAX: ffffffffffffffda RBX: 00000000384cf9d0 RCX: 00007fd0e190ba4a [ 73.727932][ T922] RDX: 0000000000000062 RSI: 00000000384cf5c2 RDI: 0000000000000005 [ 73.727936][ T922] RBP: 00000000384cf5c2 R08: 00007ffc0f31c8e0 R09: 0000000000000014 [ 73.727938][ T922] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 73.727941][ T922] R13: 0000000000000062 R14: 00007ffc0f31c8e0 R15: 0000000000000000 [ 73.727970][ T922]