[ 11.166780][ T250] modprobe (250) used greatest stack depth: 23968 bytes left [ 14.743263][ T300] br0: port 1(veth1) entered blocking state [ 14.743801][ T300] br0: port 1(veth1) entered disabled state [ 14.744331][ T300] veth1: entered allmulticast mode [ 14.747213][ T300] veth1: entered promiscuous mode [ 14.830321][ T302] br0: port 2(veth2) entered blocking state [ 14.830636][ T302] br0: port 2(veth2) entered disabled state [ 14.830941][ T302] veth2: entered allmulticast mode [ 14.832984][ T302] veth2: entered promiscuous mode [ 15.019402][ T40] br0: port 1(veth1) entered blocking state [ 15.019839][ T40] br0: port 1(veth1) entered forwarding state [ 15.114889][ T40] br0: port 2(veth2) entered blocking state [ 15.115240][ T40] br0: port 2(veth2) entered forwarding state [ 23.622968][ T352] veth0: entered promiscuous mode [ 24.182559][ T358] GACT probability NOT on [ 24.224132][ T355] tc (355) used greatest stack depth: 23792 bytes left [ 24.342180][ T359] [ 24.342490][ T359] ============================= [ 24.342651][ T359] WARNING: suspicious RCU usage [ 24.342824][ T359] 6.14.0-rc6-virtme #1 Not tainted [ 24.342982][ T359] ----------------------------- [ 24.343171][ T359] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 24.343475][ T359] [ 24.343475][ T359] other info that might help us debug this: [ 24.343475][ T359] [ 24.343812][ T359] [ 24.343812][ T359] rcu_scheduler_active = 2, debug_locks = 1 [ 24.344058][ T359] 1 lock held by mausezahn/359: [ 24.344214][ T359] #0: ffffffff8ef5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 24.344507][ T359] [ 24.344507][ T359] stack backtrace: [ 24.344695][ T359] CPU: 0 UID: 0 PID: 359 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 24.344700][ T359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.344703][ T359] Call Trace: [ 24.344705][ T359] [ 24.344708][ T359] dump_stack_lvl+0xb0/0xd0 [ 24.344716][ T359] lockdep_rcu_suspicious+0x1ea/0x280 [ 24.344733][ T359] dev_hard_start_xmit+0x2fc/0x3f0 [ 24.344752][ T359] __dev_queue_xmit+0xfaf/0x18d0 [ 24.344766][ T359] ? __pfx___dev_queue_xmit+0x10/0x10 [ 24.344771][ T359] ? packet_parse_headers+0x231/0x9c0 [ 24.344780][ T359] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 24.344787][ T359] ? __pfx_packet_parse_headers+0x10/0x10 [ 24.344791][ T359] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 24.344797][ T359] ? dev_get_by_index+0xb2/0x190 [ 24.344810][ T359] packet_snd+0xd0c/0x19d0 [ 24.344822][ T359] ? __lock_release+0x103/0x460 [ 24.344826][ T359] ? __might_fault+0x11b/0x170 [ 24.344835][ T359] ? __pfx_packet_snd+0x10/0x10 [ 24.344837][ T359] ? trace_lock_acquire+0x14c/0x1f0 [ 24.344839][ T359] ? __might_fault+0x11b/0x170 [ 24.344846][ T359] ? lock_acquire+0x32/0xc0 [ 24.344853][ T359] ? __might_fault+0x11b/0x170 [ 24.344863][ T359] __sys_sendto+0x3c3/0x450 [ 24.344870][ T359] ? __pfx___sys_sendto+0x10/0x10 [ 24.344885][ T359] ? sock_ioctl+0x3b6/0x590 [ 24.344895][ T359] ? __pfx___up_read+0x10/0x10 [ 24.344905][ T359] ? do_user_addr_fault+0x374/0xe30 [ 24.344916][ T359] ? do_user_addr_fault+0x374/0xe30 [ 24.344923][ T359] __x64_sys_sendto+0xe0/0x1c0 [ 24.344927][ T359] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 24.344932][ T359] do_syscall_64+0xc1/0x1d0 [ 24.344942][ T359] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 24.344947][ T359] RIP: 0033:0x7f43a167ea4a [ 24.344953][ T359] 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 [ 24.344956][ T359] RSP: 002b:00007ffc83c59618 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 24.344960][ T359] RAX: ffffffffffffffda RBX: 000000003400d9d0 RCX: 00007f43a167ea4a [ 24.344963][ T359] RDX: 0000000000000062 RSI: 000000003400d5c2 RDI: 0000000000000005 [ 24.344965][ T359] RBP: 000000003400d5c2 R08: 00007ffc83c59620 R09: 0000000000000014 [ 24.344967][ T359] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 24.344969][ T359] R13: 0000000000000062 R14: 00007ffc83c59620 R15: 0000000000000000 [ 24.344985][ T359] [ 50.428816][ T386] veth0: left promiscuous mode [ 50.735951][ T398] veth3: entered promiscuous mode [ 52.681804][ T407] veth3: left promiscuous mode [ 52.864425][ T409] veth3: entered promiscuous mode [ 54.835859][ T418] veth3: left promiscuous mode [ 55.025934][ T421] veth3: entered promiscuous mode [ 56.951165][ T430] veth3: left promiscuous mode [ 57.119180][ T432] veth3: entered promiscuous mode [ 59.035926][ T441] veth3: left promiscuous mode [ 83.133645][ T497] veth3: entered promiscuous mode [ 86.301799][ T517] veth3: left promiscuous mode [ 86.596702][ T525] br0: port 2(veth2) entered disabled state [ 86.696280][ T526] br0: port 1(veth1) entered disabled state [ 86.778020][ T527] veth2: left allmulticast mode [ 86.778347][ T527] veth2: left promiscuous mode [ 86.778728][ T527] br0: port 2(veth2) entered disabled state [ 86.780444][ T527] veth1: left allmulticast mode [ 86.780670][ T527] veth1: left promiscuous mode [ 86.780999][ T527] br0: port 1(veth1) entered disabled state