[ 16.747758][ T356] 8021q: 802.1Q VLAN Support v1.8 [ 17.172038][ T362] gre: GRE over IPv4 demultiplexor driver [ 17.217789][ T362] ip6_gre: GRE over IPv6 tunneling driver [ 27.047801][ T444] GACT probability NOT on [ 27.455481][ T447] [ 27.455744][ T447] ============================= [ 27.455902][ T447] WARNING: suspicious RCU usage [ 27.456053][ T447] 6.14.0-rc6-virtme #1 Not tainted [ 27.456234][ T447] ----------------------------- [ 27.456542][ T447] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 27.456805][ T447] [ 27.456805][ T447] other info that might help us debug this: [ 27.456805][ T447] [ 27.457089][ T447] [ 27.457089][ T447] rcu_scheduler_active = 2, debug_locks = 1 [ 27.457321][ T447] 1 lock held by mausezahn/447: [ 27.457482][ T447] #0: ffffffff96f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 27.457760][ T447] [ 27.457760][ T447] stack backtrace: [ 27.457959][ T447] CPU: 1 UID: 0 PID: 447 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 27.457964][ T447] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.457966][ T447] Call Trace: [ 27.457967][ T447] [ 27.457970][ T447] dump_stack_lvl+0xb0/0xd0 [ 27.457977][ T447] lockdep_rcu_suspicious+0x1ea/0x280 [ 27.457988][ T447] dev_hard_start_xmit+0x2fc/0x3f0 [ 27.457998][ T447] __dev_queue_xmit+0xfaf/0x18d0 [ 27.458012][ T447] ? __pfx___dev_queue_xmit+0x10/0x10 [ 27.458016][ T447] ? packet_parse_headers+0x231/0x9c0 [ 27.458025][ T447] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 27.458031][ T447] ? __pfx_packet_parse_headers+0x10/0x10 [ 27.458035][ T447] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 27.458040][ T447] ? dev_get_by_index+0xb2/0x190 [ 27.458051][ T447] packet_snd+0xd0c/0x19d0 [ 27.458063][ T447] ? __lock_release+0x103/0x460 [ 27.458066][ T447] ? __might_fault+0x11b/0x170 [ 27.458073][ T447] ? __pfx_packet_snd+0x10/0x10 [ 27.458075][ T447] ? trace_lock_acquire+0x14c/0x1f0 [ 27.458078][ T447] ? __might_fault+0x11b/0x170 [ 27.458085][ T447] ? lock_acquire+0x32/0xc0 [ 27.458091][ T447] ? __might_fault+0x11b/0x170 [ 27.458102][ T447] __sys_sendto+0x3c3/0x450 [ 27.458107][ T447] ? __pfx___sys_sendto+0x10/0x10 [ 27.458122][ T447] ? sock_ioctl+0x3b6/0x590 [ 27.458132][ T447] ? __pfx___up_read+0x10/0x10 [ 27.458140][ T447] ? do_user_addr_fault+0x374/0xe30 [ 27.458153][ T447] ? do_user_addr_fault+0x374/0xe30 [ 27.458160][ T447] __x64_sys_sendto+0xe0/0x1c0 [ 27.458164][ T447] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 27.458169][ T447] do_syscall_64+0xc1/0x1d0 [ 27.458177][ T447] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 27.458181][ T447] RIP: 0033:0x7f327ace6a4a [ 27.458185][ T447] 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 [ 27.458188][ T447] RSP: 002b:00007fff81a1f668 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 27.458192][ T447] RAX: ffffffffffffffda RBX: 000000000fcf49d0 RCX: 00007f327ace6a4a [ 27.458194][ T447] RDX: 0000000000000062 RSI: 000000000fcf45c2 RDI: 0000000000000005 [ 27.458196][ T447] RBP: 000000000fcf45c2 R08: 00007fff81a1f670 R09: 0000000000000014 [ 27.458197][ T447] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 27.458199][ T447] R13: 0000000000000062 R14: 00007fff81a1f670 R15: 0000000000000000 [ 27.458215][ T447]