[ 10.606551][ T250] ip (250) used greatest stack depth: 23248 bytes left [ 12.549741][ T288] 8021q: 802.1Q VLAN Support v1.8 [ 14.196288][ T310] br0: port 1(veth1) entered blocking state [ 14.196745][ T310] br0: port 1(veth1) entered disabled state [ 14.198053][ T310] veth1: entered allmulticast mode [ 14.200026][ T310] veth1: entered promiscuous mode [ 14.278120][ T312] br0: port 2(veth2) entered blocking state [ 14.278425][ T312] br0: port 2(veth2) entered disabled state [ 14.278694][ T312] veth2: entered allmulticast mode [ 14.281719][ T312] veth2: entered promiscuous mode [ 14.532550][ T40] br0: port 1(veth1) entered blocking state [ 14.533055][ T40] br0: port 1(veth1) entered forwarding state [ 14.599447][ T40] br0: port 2(veth2) entered blocking state [ 14.599955][ T40] br0: port 2(veth2) entered forwarding state [ 63.714923][ T505] [ 63.715405][ T505] ============================= [ 63.715703][ T505] WARNING: suspicious RCU usage [ 63.716009][ T505] 6.14.0-rc6-virtme #1 Not tainted [ 63.716337][ T505] ----------------------------- [ 63.716841][ T505] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 63.717397][ T505] [ 63.717397][ T505] other info that might help us debug this: [ 63.717397][ T505] [ 63.717973][ T505] [ 63.717973][ T505] rcu_scheduler_active = 2, debug_locks = 1 [ 63.718439][ T505] 1 lock held by mausezahn/505: [ 63.718749][ T505] #0: ffffffff94f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 63.719285][ T505] [ 63.719285][ T505] stack backtrace: [ 63.719659][ T505] CPU: 2 UID: 0 PID: 505 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 63.719663][ T505] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 63.719666][ T505] Call Trace: [ 63.719668][ T505] [ 63.719670][ T505] dump_stack_lvl+0xb0/0xd0 [ 63.719679][ T505] lockdep_rcu_suspicious+0x1ea/0x280 [ 63.719691][ T505] dev_hard_start_xmit+0x2fc/0x3f0 [ 63.719701][ T505] __dev_queue_xmit+0xfaf/0x18d0 [ 63.719715][ T505] ? __pfx___dev_queue_xmit+0x10/0x10 [ 63.719720][ T505] ? packet_parse_headers+0x231/0x9c0 [ 63.719729][ T505] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 63.719736][ T505] ? __pfx_packet_parse_headers+0x10/0x10 [ 63.719741][ T505] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 63.719747][ T505] ? dev_get_by_index+0xb2/0x190 [ 63.719759][ T505] packet_snd+0xd0c/0x19d0 [ 63.719771][ T505] ? __lock_release+0x103/0x460 [ 63.719775][ T505] ? __might_fault+0x11b/0x170 [ 63.719783][ T505] ? __pfx_packet_snd+0x10/0x10 [ 63.719785][ T505] ? trace_lock_acquire+0x14c/0x1f0 [ 63.719788][ T505] ? __might_fault+0x11b/0x170 [ 63.719795][ T505] ? lock_acquire+0x32/0xc0 [ 63.719801][ T505] ? __might_fault+0x11b/0x170 [ 63.719812][ T505] __sys_sendto+0x3c3/0x450 [ 63.719819][ T505] ? __pfx___sys_sendto+0x10/0x10 [ 63.719833][ T505] ? sock_ioctl+0x3b6/0x590 [ 63.719844][ T505] ? __pfx___up_read+0x10/0x10 [ 63.719854][ T505] ? do_user_addr_fault+0x374/0xe30 [ 63.719865][ T505] ? do_user_addr_fault+0x374/0xe30 [ 63.719872][ T505] __x64_sys_sendto+0xe0/0x1c0 [ 63.719876][ T505] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 63.719882][ T505] do_syscall_64+0xc1/0x1d0 [ 63.719891][ T505] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.719896][ T505] RIP: 0033:0x7f9c1d76ea4a [ 63.719902][ T505] 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 [ 63.719905][ T505] RSP: 002b:00007ffc533758a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 63.719909][ T505] RAX: ffffffffffffffda RBX: 000000000fc5c9d0 RCX: 00007f9c1d76ea4a [ 63.719911][ T505] RDX: 000000000000002a RSI: 000000000fc5cc92 RDI: 0000000000000005 [ 63.719913][ T505] RBP: 000000000fc5cc92 R08: 00007ffc533758b0 R09: 0000000000000014 [ 63.719915][ T505] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.719917][ T505] R13: 000000000000002a R14: 00007ffc533758b0 R15: 0000000000000000 [ 63.719933][ T505] [ 69.553755][ T582] Mirror/redirect action on [ 77.087989][ T618] br0: port 2(veth2) entered disabled state [ 77.152973][ T619] br0: port 1(veth1) entered disabled state [ 77.238239][ T620] veth2: left allmulticast mode [ 77.238518][ T620] veth2: left promiscuous mode [ 77.238856][ T620] br0: port 2(veth2) entered disabled state [ 77.240751][ T620] veth1: left allmulticast mode [ 77.240981][ T620] veth1: left promiscuous mode [ 77.241326][ T620] br0: port 1(veth1) entered disabled state