[ 11.318028][ T263] ip (263) used greatest stack depth: 23256 bytes left [ 15.089280][ T319] br1: port 1(veth1) entered blocking state [ 15.090396][ T319] br1: port 1(veth1) entered disabled state [ 15.090861][ T319] veth1: entered allmulticast mode [ 15.092887][ T319] veth1: entered promiscuous mode [ 15.169635][ T38] br1: port 1(veth1) entered blocking state [ 15.170155][ T38] br1: port 1(veth1) entered forwarding state [ 15.243607][ T321] br1: port 2(veth2) entered blocking state [ 15.243935][ T321] br1: port 2(veth2) entered disabled state [ 15.244232][ T321] veth2: entered allmulticast mode [ 15.247200][ T321] veth2: entered promiscuous mode [ 15.350295][ T41] br1: port 2(veth2) entered blocking state [ 15.350754][ T41] br1: port 2(veth2) entered forwarding state [ 15.653529][ T325] 8021q: 802.1Q VLAN Support v1.8 [ 16.493657][ T336] GACT probability NOT on [ 23.901513][ T374] Mirror/redirect action on [ 24.285388][ T380] [ 24.285686][ T380] ============================= [ 24.286091][ T380] WARNING: suspicious RCU usage [ 24.286261][ T380] 6.14.0-rc6-virtme #1 Not tainted [ 24.286442][ T380] ----------------------------- [ 24.286607][ T380] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 24.286888][ T380] [ 24.286888][ T380] other info that might help us debug this: [ 24.286888][ T380] [ 24.287195][ T380] [ 24.287195][ T380] rcu_scheduler_active = 2, debug_locks = 1 [ 24.287449][ T380] 1 lock held by mausezahn/380: [ 24.287616][ T380] #0: ffffffffa975b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 24.287911][ T380] [ 24.287911][ T380] stack backtrace: [ 24.288154][ T380] CPU: 2 UID: 0 PID: 380 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 24.288159][ T380] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.288161][ T380] Call Trace: [ 24.288163][ T380] [ 24.288166][ T380] dump_stack_lvl+0xb0/0xd0 [ 24.288175][ T380] lockdep_rcu_suspicious+0x1ea/0x280 [ 24.288187][ T380] dev_hard_start_xmit+0x2fc/0x3f0 [ 24.288197][ T380] __dev_queue_xmit+0xfaf/0x18d0 [ 24.288212][ T380] ? __pfx___dev_queue_xmit+0x10/0x10 [ 24.288216][ T380] ? packet_parse_headers+0x231/0x9c0 [ 24.288225][ T380] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 24.288232][ T380] ? __pfx_packet_parse_headers+0x10/0x10 [ 24.288237][ T380] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 24.288243][ T380] ? dev_get_by_index+0xb2/0x190 [ 24.288255][ T380] packet_snd+0xd0c/0x19d0 [ 24.288267][ T380] ? __lock_release+0x103/0x460 [ 24.288271][ T380] ? __might_fault+0x11b/0x170 [ 24.288279][ T380] ? __pfx_packet_snd+0x10/0x10 [ 24.288282][ T380] ? trace_lock_acquire+0x14c/0x1f0 [ 24.288284][ T380] ? __might_fault+0x11b/0x170 [ 24.288291][ T380] ? lock_acquire+0x32/0xc0 [ 24.288297][ T380] ? __might_fault+0x11b/0x170 [ 24.288308][ T380] __sys_sendto+0x3c3/0x450 [ 24.288315][ T380] ? __pfx___sys_sendto+0x10/0x10 [ 24.288329][ T380] ? sock_ioctl+0x3b6/0x590 [ 24.288340][ T380] ? __pfx___up_read+0x10/0x10 [ 24.288353][ T380] ? do_user_addr_fault+0x374/0xe30 [ 24.288366][ T380] ? do_user_addr_fault+0x374/0xe30 [ 24.288373][ T380] __x64_sys_sendto+0xe0/0x1c0 [ 24.288377][ T380] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 24.288382][ T380] do_syscall_64+0xc1/0x1d0 [ 24.288391][ T380] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 24.288397][ T380] RIP: 0033:0x7f5b4fe65a4a [ 24.288402][ T380] 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 [ 24.288405][ T380] RSP: 002b:00007ffcc9fd8268 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 24.288409][ T380] RAX: ffffffffffffffda RBX: 0000000018d2a9d0 RCX: 00007f5b4fe65a4a [ 24.288411][ T380] RDX: 000000000000002a RSI: 0000000018d2ac92 RDI: 0000000000000005 [ 24.288413][ T380] RBP: 0000000018d2ac92 R08: 00007ffcc9fd8270 R09: 0000000000000014 [ 24.288415][ T380] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 24.288417][ T380] R13: 000000000000002a R14: 00007ffcc9fd8270 R15: 0000000000000000 [ 24.288433][ T380] [ 59.691271][ T562] br1: port 1(veth1) entered disabled state [ 59.779489][ T563] br1: port 2(veth2) entered disabled state [ 59.850675][ T564] veth2: left allmulticast mode [ 59.850989][ T564] veth2: left promiscuous mode [ 59.851319][ T564] br1: port 2(veth2) entered disabled state [ 59.853543][ T564] veth1: left allmulticast mode [ 59.853741][ T564] veth1: left promiscuous mode [ 59.854046][ T564] br1: port 1(veth1) entered disabled state