[ 10.090063][ T252] ip (252) used greatest stack depth: 23424 bytes left [ 12.879943][ T305] br0: port 1(veth1) entered blocking state [ 12.880376][ T305] br0: port 1(veth1) entered disabled state [ 12.880760][ T305] veth1: entered allmulticast mode [ 12.882725][ T305] veth1: entered promiscuous mode [ 12.962908][ T306] br0: port 2(veth2) entered blocking state [ 12.963193][ T306] br0: port 2(veth2) entered disabled state [ 12.963454][ T306] veth2: entered allmulticast mode [ 12.965352][ T306] veth2: entered promiscuous mode [ 13.126204][ T38] br0: port 1(veth1) entered blocking state [ 13.126564][ T38] br0: port 1(veth1) entered forwarding state [ 13.224334][ T46] br0: port 2(veth2) entered blocking state [ 13.224855][ T46] br0: port 2(veth2) entered forwarding state [ 21.608782][ T354] veth0: entered promiscuous mode [ 22.136886][ T360] GACT probability NOT on [ 22.275036][ T361] [ 22.275346][ T361] ============================= [ 22.275520][ T361] WARNING: suspicious RCU usage [ 22.275682][ T361] 6.14.0-rc6-virtme #1 Not tainted [ 22.275850][ T361] ----------------------------- [ 22.276028][ T361] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 22.276328][ T361] [ 22.276328][ T361] other info that might help us debug this: [ 22.276328][ T361] [ 22.276651][ T361] [ 22.276651][ T361] rcu_scheduler_active = 2, debug_locks = 1 [ 22.276895][ T361] 1 lock held by mausezahn/361: [ 22.277073][ T361] #0: ffffffff85f5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 22.277382][ T361] [ 22.277382][ T361] stack backtrace: [ 22.277603][ T361] CPU: 3 UID: 0 PID: 361 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 22.277607][ T361] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.277609][ T361] Call Trace: [ 22.277611][ T361] [ 22.277613][ T361] dump_stack_lvl+0xb0/0xd0 [ 22.277620][ T361] lockdep_rcu_suspicious+0x1ea/0x280 [ 22.277631][ T361] dev_hard_start_xmit+0x2fc/0x3f0 [ 22.277642][ T361] __dev_queue_xmit+0xfaf/0x18d0 [ 22.277656][ T361] ? __pfx___dev_queue_xmit+0x10/0x10 [ 22.277660][ T361] ? packet_parse_headers+0x231/0x9c0 [ 22.277669][ T361] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 22.277675][ T361] ? __pfx_packet_parse_headers+0x10/0x10 [ 22.277679][ T361] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 22.277684][ T361] ? dev_get_by_index+0xb2/0x190 [ 22.277695][ T361] packet_snd+0xd0c/0x19d0 [ 22.277707][ T361] ? __lock_release+0x103/0x460 [ 22.277710][ T361] ? __might_fault+0x11b/0x170 [ 22.277717][ T361] ? __pfx_packet_snd+0x10/0x10 [ 22.277719][ T361] ? trace_lock_acquire+0x14c/0x1f0 [ 22.277721][ T361] ? __might_fault+0x11b/0x170 [ 22.277728][ T361] ? lock_acquire+0x32/0xc0 [ 22.277735][ T361] ? __might_fault+0x11b/0x170 [ 22.277746][ T361] __sys_sendto+0x3c3/0x450 [ 22.277752][ T361] ? __pfx___sys_sendto+0x10/0x10 [ 22.277766][ T361] ? sock_ioctl+0x3b6/0x590 [ 22.277776][ T361] ? __pfx___up_read+0x10/0x10 [ 22.277784][ T361] ? do_user_addr_fault+0x374/0xe30 [ 22.277794][ T361] ? do_user_addr_fault+0x374/0xe30 [ 22.277801][ T361] __x64_sys_sendto+0xe0/0x1c0 [ 22.277805][ T361] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 22.277810][ T361] do_syscall_64+0xc1/0x1d0 [ 22.277817][ T361] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 22.277822][ T361] RIP: 0033:0x7f30d8a11a4a [ 22.277827][ T361] 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 [ 22.277830][ T361] RSP: 002b:00007ffe42305368 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 22.277833][ T361] RAX: ffffffffffffffda RBX: 00000000331e79d0 RCX: 00007f30d8a11a4a [ 22.277836][ T361] RDX: 0000000000000062 RSI: 00000000331e75c2 RDI: 0000000000000005 [ 22.277837][ T361] RBP: 00000000331e75c2 R08: 00007ffe42305370 R09: 0000000000000014 [ 22.277839][ T361] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 22.277841][ T361] R13: 0000000000000062 R14: 00007ffe42305370 R15: 0000000000000000 [ 22.277857][ T361] [ 48.177862][ T388] veth0: left promiscuous mode [ 48.495346][ T400] veth3: entered promiscuous mode [ 50.336391][ T409] veth3: left promiscuous mode [ 50.478812][ T411] veth3: entered promiscuous mode [ 52.298750][ T420] veth3: left promiscuous mode [ 52.452155][ T423] veth3: entered promiscuous mode [ 54.281328][ T432] veth3: left promiscuous mode [ 54.436248][ T434] veth3: entered promiscuous mode [ 56.288636][ T443] veth3: left promiscuous mode [ 80.173204][ T499] veth3: entered promiscuous mode [ 83.259625][ T519] veth3: left promiscuous mode [ 83.540550][ T527] br0: port 2(veth2) entered disabled state [ 83.621785][ T528] br0: port 1(veth1) entered disabled state [ 83.702516][ T529] veth2: left allmulticast mode [ 83.702754][ T529] veth2: left promiscuous mode [ 83.703430][ T529] br0: port 2(veth2) entered disabled state [ 83.705295][ T529] veth1: left allmulticast mode [ 83.705492][ T529] veth1: left promiscuous mode [ 83.705790][ T529] br0: port 1(veth1) entered disabled state