[ 642.873276][ T6455] ip (6455) used greatest stack depth: 23808 bytes left [ 683.911088][ T6988] IPv6: Can't replace route, no match found [ 687.645767][ T7058] IPv6: Can't replace route, no match found [ 752.688755][ T7972] Mirror/redirect action on [ 857.662713][ T8600] veth2: entered promiscuous mode [ 857.691800][ T8600] [ 857.692076][ T8600] ============================= [ 857.692243][ T8600] WARNING: suspicious RCU usage [ 857.692436][ T8600] 6.14.0-rc6-virtme #1 Not tainted [ 857.692741][ T8600] ----------------------------- [ 857.692921][ T8600] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 857.693195][ T8600] [ 857.693195][ T8600] other info that might help us debug this: [ 857.693195][ T8600] [ 857.693496][ T8600] [ 857.693496][ T8600] rcu_scheduler_active = 2, debug_locks = 1 [ 857.693725][ T8600] 1 lock held by ra6/8600: [ 857.693893][ T8600] #0: ffffffff91d6f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 857.694203][ T8600] [ 857.694203][ T8600] stack backtrace: [ 857.694396][ T8600] CPU: 0 UID: 65534 PID: 8600 Comm: ra6 Not tainted 6.14.0-rc6-virtme #1 [ 857.694401][ T8600] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 857.694405][ T8600] Call Trace: [ 857.694409][ T8600] [ 857.694411][ T8600] dump_stack_lvl+0xb0/0xd0 [ 857.694428][ T8600] lockdep_rcu_suspicious+0x1ea/0x280 [ 857.694445][ T8600] dev_hard_start_xmit+0x2fc/0x3f0 [ 857.694457][ T8600] __dev_queue_xmit+0xfaa/0x18d0 [ 857.694461][ T8600] ? _copy_from_iter+0x1d2/0x12e0 [ 857.694486][ T8600] ? __pfx___dev_queue_xmit+0x10/0x10 [ 857.694491][ T8600] ? packet_parse_headers+0x243/0x9d0 [ 857.694506][ T8600] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 857.694517][ T8600] ? __pfx_packet_parse_headers+0x10/0x10 [ 857.694522][ T8600] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 857.694533][ T8600] ? packet_cached_dev_get+0xd5/0x210 [ 857.694543][ T8600] packet_snd+0xd0d/0x19c0 [ 857.694557][ T8600] ? hlock_class+0x4e/0x130 [ 857.694561][ T8600] ? mark_lock+0x38/0x3e0 [ 857.694568][ T8600] ? __pfx_packet_snd+0x10/0x10 [ 857.694576][ T8600] ? __lock_acquire+0xb9a/0x1680 [ 857.694593][ T8600] __sys_sendto+0x3c3/0x450 [ 857.694601][ T8600] ? __pfx___sys_sendto+0x10/0x10 [ 857.694615][ T8600] ? __lock_release+0x103/0x460 [ 857.694618][ T8600] ? do_user_addr_fault+0x972/0xe30 [ 857.694628][ T8600] ? __pfx___lock_release+0x10/0x10 [ 857.694631][ T8600] ? __up_read+0x1a7/0x780 [ 857.694637][ T8600] ? __pfx___up_read+0x10/0x10 [ 857.694644][ T8600] ? do_user_addr_fault+0x972/0xe30 [ 857.694652][ T8600] ? do_user_addr_fault+0x97c/0xe30 [ 857.694660][ T8600] __x64_sys_sendto+0xe0/0x1c0 [ 857.694665][ T8600] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 857.694669][ T8600] do_syscall_64+0xc1/0x1d0 [ 857.694678][ T8600] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 857.694685][ T8600] RIP: 0033:0x7fa3edd468f0 [ 857.694692][ T8600] 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 [ 857.694696][ T8600] RSP: 002b:00007ffd8b3563b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 857.694701][ T8600] RAX: ffffffffffffffda RBX: 0000000037661e50 RCX: 00007fa3edd468f0 [ 857.694703][ T8600] RDX: 0000000000000046 RSI: 0000000000417940 RDI: 0000000000000006 [ 857.694705][ T8600] RBP: 00007ffd8b356410 R08: 0000000000000000 R09: 0000000000000000 [ 857.694707][ T8600] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd8b356ef8 [ 857.694709][ T8600] R13: 0000000000402516 R14: 0000000000416de0 R15: 00007fa3edf6b000 [ 857.694726][ T8600] [ 857.711792][ T8600] veth2: left promiscuous mode