[ 2.484963] ip (264) used greatest stack depth: 12136 bytes left [ 3.315740] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.315819] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.315902] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.316023] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.316118] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.316519] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.316703] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.317273] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.317705] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 3.317795] nf_conntrack: nf_conntrack: table full in netns 4026532044, dropping packet [ 44.137698] ------------[ cut here ]------------ [ 44.137843] refcount_t: underflow; use-after-free. [ 44.137935] WARNING: CPU: 2 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 44.138043] Modules linked in: nf_conntrack_netlink nft_ct nf_tables nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 [ 44.138188] CPU: 2 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 44.138308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 44.138399] Workqueue: netns cleanup_net [ 44.138479] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 44.138557] Code: 8b e8 18 ed b9 ff 90 0f 0b 90 90 c3 80 3d d9 ea ea 00 00 75 89 c6 05 d0 ea ea 00 01 90 48 c7 c7 78 de 11 8b e8 f5 ec b9 ff 90 <0f> 0b 90 90 c3 80 3d b4 ea ea 00 00 0f 85 62 ff ff ff c6 05 a7 ea [ 44.138776] RSP: 0018:ffffb75d4025fd50 EFLAGS: 00010286 [ 44.138860] RAX: 0000000000000000 RBX: ffffb75d4025fd60 RCX: 00000000ffffdfff [ 44.138962] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 44.139061] RBP: ffffb75d4025f868 R08: ffffffff8b556d28 R09: 00000000ffffdfff [ 44.139162] R10: ffffffff8b476d40 R11: ffffffff8b526d40 R12: dead000000000122 [ 44.139258] R13: 00000000fffc180c R14: 0000000000000001 R15: ffff918b86d82000 [ 44.139341] FS: 0000000000000000(0000) GS:ffff918c330d8000(0000) knlGS:0000000000000000 [ 44.139425] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.139495] CR2: 00007ffc6d5b5b58 CR3: 0000000004cbb003 CR4: 0000000000772ef0 [ 44.139574] PKRU: 55555554 [ 44.139621] Call Trace: [ 44.139682] [ 44.139730] netdev_run_todo+0x21a/0x550 [ 44.139810] ops_undo_list+0x1e3/0x1f0 [ 44.139867] cleanup_net+0x1b7/0x2b0 [ 44.139921] process_one_work+0x162/0x380 [ 44.139978] worker_thread+0x299/0x3c0 [ 44.140037] ? rescuer_thread+0x4c0/0x4c0 [ 44.140091] kthread+0x101/0x1f0 [ 44.140146] ? kthreads_online_cpu+0x110/0x110 [ 44.140208] ? kthreads_online_cpu+0x110/0x110 [ 44.140276] ret_from_fork+0x11c/0x140 [ 44.140356] ? kthreads_online_cpu+0x110/0x110 [ 44.140418] ret_from_fork_asm+0x11/0x20 [ 44.140474] [ 44.140521] ---[ end trace 0000000000000000 ]---