[ 2.303840] ------------[ cut here ]------------ [ 2.304004] refcount_t: underflow; use-after-free. [ 2.304069] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.304156] Modules linked in: nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 [ 2.304253] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.304340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.304406] Workqueue: netns cleanup_net [ 2.304448] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.304501] Code: b0 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 31 b0 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 [ 2.304663] RSP: 0018:ffffb5e9c0253d50 EFLAGS: 00010286 [ 2.304717] RAX: 0000000000000000 RBX: ffffb5e9c0253d60 RCX: 00000000ffffdfff [ 2.304793] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.304862] RBP: ffffb5e9c0253868 R08: ffffffffb0756d28 R09: 00000000ffffdfff [ 2.304933] R10: ffffffffb0676d40 R11: ffffffffb0726d40 R12: dead000000000122 [ 2.305002] R13: 00000000fffb749c R14: 0000000000000001 R15: ffff92c441bac000 [ 2.305076] FS: 0000000000000000(0000) GS:ffff92c4cddd8000(0000) knlGS:0000000000000000 [ 2.305151] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.305215] CR2: 00007f710ffeb4d8 CR3: 0000000027641005 CR4: 0000000000772ef0 [ 2.305287] PKRU: 55555554 [ 2.305316] Call Trace: [ 2.305342] [ 2.305370] netdev_run_todo+0x21a/0x550 [ 2.305421] ops_undo_list+0x1e3/0x1f0 [ 2.305466] cleanup_net+0x1b7/0x2b0 [ 2.305510] process_one_work+0x162/0x380 [ 2.305555] worker_thread+0x299/0x3c0 [ 2.305597] ? rescuer_thread+0x4c0/0x4c0 [ 2.305639] kthread+0x101/0x1f0 [ 2.305679] ? kthreads_online_cpu+0x110/0x110 [ 2.305739] ? kthreads_online_cpu+0x110/0x110 [ 2.305793] ret_from_fork+0x11c/0x140 [ 2.305835] ? kthreads_online_cpu+0x110/0x110 [ 2.305888] ret_from_fork_asm+0x11/0x20 [ 2.305932] [ 2.305960] ---[ end trace 0000000000000000 ]---