[ 15.136414][ T369] br: port 1(veth1) entered blocking state [ 15.136855][ T369] br: port 1(veth1) entered disabled state [ 15.137292][ T369] veth1: entered allmulticast mode [ 15.139685][ T369] veth1: entered promiscuous mode [ 15.142564][ T151] br: port 1(veth1) entered blocking state [ 15.142893][ T151] br: port 1(veth1) entered forwarding state [ 15.252897][ T374] br: port 2(veth3) entered blocking state [ 15.253796][ T374] br: port 2(veth3) entered disabled state [ 15.254094][ T374] veth3: entered allmulticast mode [ 15.255951][ T374] veth3: entered promiscuous mode [ 15.259067][ T57] br: port 2(veth3) entered blocking state [ 15.259521][ T57] br: port 2(veth3) entered forwarding state [ 15.384835][ T379] br: port 3(veth4) entered blocking state [ 15.385340][ T379] br: port 3(veth4) entered disabled state [ 15.385754][ T379] veth4: entered allmulticast mode [ 15.390753][ T379] veth4: entered promiscuous mode [ 15.392452][ T46] br: port 3(veth4) entered blocking state [ 15.392704][ T46] br: port 3(veth4) entered forwarding state [ 26.294812][ T468] [ 26.295293][ T468] ============================= [ 26.295493][ T468] WARNING: suspicious RCU usage [ 26.295648][ T468] 6.14.0-rc6-virtme #1 Not tainted [ 26.295803][ T468] ----------------------------- [ 26.295971][ T468] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 26.296231][ T468] [ 26.296231][ T468] other info that might help us debug this: [ 26.296231][ T468] [ 26.296527][ T468] [ 26.296527][ T468] rcu_scheduler_active = 2, debug_locks = 1 [ 26.296757][ T468] 1 lock held by mausezahn/468: [ 26.296928][ T468] #0: ffffffffa995b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 26.297221][ T468] [ 26.297221][ T468] stack backtrace: [ 26.297413][ T468] CPU: 0 UID: 0 PID: 468 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 26.297417][ T468] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 26.297419][ T468] Call Trace: [ 26.297421][ T468] [ 26.297423][ T468] dump_stack_lvl+0xb0/0xd0 [ 26.297431][ T468] lockdep_rcu_suspicious+0x1ea/0x280 [ 26.297441][ T468] dev_hard_start_xmit+0x2fc/0x3f0 [ 26.297451][ T468] sch_direct_xmit+0x1e0/0xa60 [ 26.297462][ T468] ? __pfx_sch_direct_xmit+0x10/0x10 [ 26.297478][ T468] __qdisc_run+0x1b9/0x3b0 [ 26.297482][ T468] ? __lock_acquire+0xb9a/0x1680 [ 26.297487][ T468] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 26.297492][ T468] ? __pfx___qdisc_run+0x10/0x10 [ 26.297499][ T468] ? tbf_enqueue+0x21e/0x7b0 [sch_tbf] [ 26.297506][ T468] ? lock_acquire+0x32/0xc0 [ 26.297508][ T468] ? __dev_xmit_skb+0x301/0x10b0 [ 26.297520][ T468] __dev_xmit_skb+0x4a5/0x10b0 [ 26.297525][ T468] ? lock_sync+0xd0/0x180 [ 26.297532][ T468] ? __pfx___dev_xmit_skb+0x10/0x10 [ 26.297538][ T468] ? lock_acquire+0x32/0xc0 [ 26.297541][ T468] ? __dev_queue_xmit+0x1f0/0x18d0 [ 26.297549][ T468] __dev_queue_xmit+0x784/0x18d0 [ 26.297563][ T468] ? __pfx___dev_queue_xmit+0x10/0x10 [ 26.297568][ T468] ? packet_parse_headers+0x231/0x9c0 [ 26.297577][ T468] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 26.297583][ T468] ? __pfx_packet_parse_headers+0x10/0x10 [ 26.297587][ T468] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 26.297593][ T468] ? dev_get_by_index+0xb2/0x190 [ 26.297603][ T468] packet_snd+0xd0c/0x19d0 [ 26.297615][ T468] ? __lock_release+0x103/0x460 [ 26.297617][ T468] ? __might_fault+0x11b/0x170 [ 26.297624][ T468] ? __pfx_packet_snd+0x10/0x10 [ 26.297626][ T468] ? trace_lock_acquire+0x14c/0x1f0 [ 26.297628][ T468] ? __might_fault+0x11b/0x170 [ 26.297635][ T468] ? lock_acquire+0x32/0xc0 [ 26.297642][ T468] ? __might_fault+0x11b/0x170 [ 26.297653][ T468] __sys_sendto+0x3c3/0x450 [ 26.297658][ T468] ? __pfx___sys_sendto+0x10/0x10 [ 26.297673][ T468] ? sock_ioctl+0x3b6/0x590 [ 26.297682][ T468] ? __pfx___up_read+0x10/0x10 [ 26.297690][ T468] ? do_user_addr_fault+0x374/0xe30 [ 26.297700][ T468] ? do_user_addr_fault+0x374/0xe30 [ 26.297707][ T468] __x64_sys_sendto+0xe0/0x1c0 [ 26.297711][ T468] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 26.297716][ T468] do_syscall_64+0xc1/0x1d0 [ 26.297724][ T468] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 26.297728][ T468] RIP: 0033:0x7ffb36041a4a [ 26.297732][ T468] 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 [ 26.297735][ T468] RSP: 002b:00007ffd93ddc558 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 26.297738][ T468] RAX: ffffffffffffffda RBX: 00000000403999d0 RCX: 00007ffb36041a4a [ 26.297741][ T468] RDX: 00000000000005ae RSI: 000000004039a252 RDI: 0000000000000005 [ 26.297742][ T468] RBP: 000000004039a252 R08: 00007ffd93ddc560 R09: 0000000000000014 [ 26.297744][ T468] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 26.297746][ T468] R13: 00000000000005ae R14: 00007ffd93ddc560 R15: 0000000000000000 [ 26.297762][ T468] [ 107.981236][ T811] Mirror/redirect action on [ 143.525512][ T987] br: port 3(veth4) entered disabled state [ 143.526653][ T987] veth4: left allmulticast mode [ 143.526851][ T987] veth4: left promiscuous mode [ 143.527336][ T987] br: port 3(veth4) entered disabled state [ 143.536435][ T987] ip (987) used greatest stack depth: 23384 bytes left [ 143.609811][ T989] br: port 2(veth3) entered disabled state [ 143.610471][ T989] veth3: left allmulticast mode [ 143.610681][ T989] veth3: left promiscuous mode [ 143.611253][ T989] br: port 2(veth3) entered disabled state [ 143.711523][ T991] br: port 1(veth1) entered disabled state [ 143.712663][ T991] veth1: left allmulticast mode [ 143.713263][ T991] veth1: left promiscuous mode [ 143.713767][ T991] br: port 1(veth1) entered disabled state