[ 10.265051][ T249] modprobe (249) used greatest stack depth: 24552 bytes left [ 10.527290][ T252] ip (252) used greatest stack depth: 23424 bytes left [ 14.036755][ T310] br1: port 1(veth1) entered blocking state [ 14.038592][ T310] br1: port 1(veth1) entered disabled state [ 14.039016][ T310] veth1: entered allmulticast mode [ 14.041002][ T310] veth1: entered promiscuous mode [ 14.126814][ T40] br1: port 1(veth1) entered blocking state [ 14.127202][ T40] br1: port 1(veth1) entered forwarding state [ 14.201977][ T312] br1: port 2(veth2) entered blocking state [ 14.202294][ T312] br1: port 2(veth2) entered disabled state [ 14.202932][ T312] veth2: entered allmulticast mode [ 14.204949][ T312] veth2: entered promiscuous mode [ 14.284630][ T40] br1: port 2(veth2) entered blocking state [ 14.284915][ T40] br1: port 2(veth2) entered forwarding state [ 23.286461][ T362] GACT probability NOT on [ 23.424501][ T363] [ 23.424917][ T363] ============================= [ 23.425110][ T363] WARNING: suspicious RCU usage [ 23.425330][ T363] 6.14.0-rc6-virtme #1 Not tainted [ 23.425539][ T363] ----------------------------- [ 23.425716][ T363] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.426005][ T363] [ 23.426005][ T363] other info that might help us debug this: [ 23.426005][ T363] [ 23.426326][ T363] [ 23.426326][ T363] rcu_scheduler_active = 2, debug_locks = 1 [ 23.426596][ T363] 1 lock held by mausezahn/363: [ 23.426775][ T363] #0: ffffffffb055b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.427080][ T363] [ 23.427080][ T363] stack backtrace: [ 23.427287][ T363] CPU: 2 UID: 0 PID: 363 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.427292][ T363] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.427295][ T363] Call Trace: [ 23.427297][ T363] [ 23.427300][ T363] dump_stack_lvl+0xb0/0xd0 [ 23.427308][ T363] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.427321][ T363] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.427332][ T363] __dev_queue_xmit+0xfaf/0x18d0 [ 23.427353][ T363] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.427361][ T363] ? packet_parse_headers+0x231/0x9c0 [ 23.427371][ T363] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.427378][ T363] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.427383][ T363] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.427389][ T363] ? dev_get_by_index+0xb2/0x190 [ 23.427401][ T363] packet_snd+0xd0c/0x19d0 [ 23.427412][ T363] ? __lock_release+0x103/0x460 [ 23.427417][ T363] ? __might_fault+0x11b/0x170 [ 23.427428][ T363] ? __pfx_packet_snd+0x10/0x10 [ 23.427430][ T363] ? trace_lock_acquire+0x14c/0x1f0 [ 23.427432][ T363] ? __might_fault+0x11b/0x170 [ 23.427439][ T363] ? lock_acquire+0x32/0xc0 [ 23.427446][ T363] ? __might_fault+0x11b/0x170 [ 23.427457][ T363] __sys_sendto+0x3c3/0x450 [ 23.427464][ T363] ? __pfx___sys_sendto+0x10/0x10 [ 23.427478][ T363] ? sock_ioctl+0x3b6/0x590 [ 23.427489][ T363] ? __pfx___up_read+0x10/0x10 [ 23.427498][ T363] ? do_user_addr_fault+0x374/0xe30 [ 23.427510][ T363] ? do_user_addr_fault+0x374/0xe30 [ 23.427517][ T363] __x64_sys_sendto+0xe0/0x1c0 [ 23.427521][ T363] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.427526][ T363] do_syscall_64+0xc1/0x1d0 [ 23.427535][ T363] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.427541][ T363] RIP: 0033:0x7f943ee7ea4a [ 23.427548][ T363] 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 [ 23.427552][ T363] RSP: 002b:00007ffd8800ccb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.427558][ T363] RAX: ffffffffffffffda RBX: 000000000b9ca9d0 RCX: 00007f943ee7ea4a [ 23.427562][ T363] RDX: 000000000000009a RSI: 000000000b9cad42 RDI: 0000000000000005 [ 23.427565][ T363] RBP: 000000000b9cad42 R08: 00007ffd8800ccc0 R09: 0000000000000014 [ 23.427567][ T363] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.427568][ T363] R13: 000000000000009a R14: 00007ffd8800ccc0 R15: 0000000000000000 [ 23.427585][ T363] [ 120.158211][ T1707] br1: port 2(veth2) entered disabled state [ 120.248437][ T1708] veth2: left allmulticast mode [ 120.248762][ T1708] veth2: left promiscuous mode [ 120.249161][ T1708] br1: port 2(veth2) entered disabled state [ 120.342217][ T1709] br1: port 1(veth1) entered disabled state [ 120.435904][ T1710] veth1: left allmulticast mode [ 120.436132][ T1710] veth1: left promiscuous mode [ 120.437300][ T1710] br1: port 1(veth1) entered disabled state