[ 11.496635][ T274] ip (274) used greatest stack depth: 23928 bytes left [ 14.528776][ T313] ip (313) used greatest stack depth: 23616 bytes left [ 35.195444][ T582] ip (582) used greatest stack depth: 23576 bytes left [ 57.654767][ T873] IPv6: Can't replace route, no match found [ 60.774045][ T943] IPv6: Can't replace route, no match found [ 118.022406][ T1857] Mirror/redirect action on [ 218.033130][ T2485] veth2: entered promiscuous mode [ 218.060673][ T2485] [ 218.060901][ T2485] ============================= [ 218.061110][ T2485] WARNING: suspicious RCU usage [ 218.061278][ T2485] 6.14.0-rc6-virtme #1 Not tainted [ 218.061444][ T2485] ----------------------------- [ 218.061613][ T2485] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 218.061886][ T2485] [ 218.061886][ T2485] other info that might help us debug this: [ 218.061886][ T2485] [ 218.062205][ T2485] [ 218.062205][ T2485] rcu_scheduler_active = 2, debug_locks = 1 [ 218.062444][ T2485] 1 lock held by ra6/2485: [ 218.062612][ T2485] #0: ffffffff9996f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 218.063049][ T2485] [ 218.063049][ T2485] stack backtrace: [ 218.063260][ T2485] CPU: 2 UID: 65534 PID: 2485 Comm: ra6 Not tainted 6.14.0-rc6-virtme #1 [ 218.063264][ T2485] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 218.063267][ T2485] Call Trace: [ 218.063269][ T2485] [ 218.063271][ T2485] dump_stack_lvl+0xb0/0xd0 [ 218.063280][ T2485] lockdep_rcu_suspicious+0x1ea/0x280 [ 218.063291][ T2485] dev_hard_start_xmit+0x2fc/0x3f0 [ 218.063303][ T2485] __dev_queue_xmit+0xfaa/0x18d0 [ 218.063307][ T2485] ? _copy_from_iter+0x1d2/0x12e0 [ 218.063325][ T2485] ? __pfx___dev_queue_xmit+0x10/0x10 [ 218.063331][ T2485] ? packet_parse_headers+0x243/0x9d0 [ 218.063341][ T2485] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 218.063348][ T2485] ? __pfx_packet_parse_headers+0x10/0x10 [ 218.063353][ T2485] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 218.063361][ T2485] ? packet_cached_dev_get+0xd5/0x210 [ 218.063371][ T2485] packet_snd+0xd0d/0x19c0 [ 218.063383][ T2485] ? hlock_class+0x4e/0x130 [ 218.063387][ T2485] ? mark_lock+0x38/0x3e0 [ 218.063392][ T2485] ? __pfx_packet_snd+0x10/0x10 [ 218.063400][ T2485] ? __lock_acquire+0xb9a/0x1680 [ 218.063416][ T2485] __sys_sendto+0x3c3/0x450 [ 218.063423][ T2485] ? __pfx___sys_sendto+0x10/0x10 [ 218.063437][ T2485] ? __lock_release+0x103/0x460 [ 218.063439][ T2485] ? do_user_addr_fault+0x972/0xe30 [ 218.063445][ T2485] ? __pfx___lock_release+0x10/0x10 [ 218.063448][ T2485] ? __up_read+0x1a7/0x780 [ 218.063454][ T2485] ? __pfx___up_read+0x10/0x10 [ 218.063461][ T2485] ? do_user_addr_fault+0x972/0xe30 [ 218.063469][ T2485] ? do_user_addr_fault+0x97c/0xe30 [ 218.063477][ T2485] __x64_sys_sendto+0xe0/0x1c0 [ 218.063482][ T2485] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 218.063487][ T2485] do_syscall_64+0xc1/0x1d0 [ 218.063494][ T2485] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 218.063498][ T2485] RIP: 0033:0x7f44fced98f0 [ 218.063502][ T2485] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 [ 218.063506][ T2485] RSP: 002b:00007fff0fc0db48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 218.063509][ T2485] RAX: ffffffffffffffda RBX: 0000000011497e50 RCX: 00007f44fced98f0 [ 218.063512][ T2485] RDX: 0000000000000046 RSI: 0000000000417940 RDI: 0000000000000006 [ 218.063514][ T2485] RBP: 00007fff0fc0dba0 R08: 0000000000000000 R09: 0000000000000000 [ 218.063515][ T2485] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff0fc0e688 [ 218.063517][ T2485] R13: 0000000000402516 R14: 0000000000416de0 R15: 00007f44fd0fe000 [ 218.063535][ T2485] [ 218.077521][ T2485] veth2: left promiscuous mode