[ 1.937839] ------------[ cut here ]------------ [ 1.937903] refcount_t: underflow; use-after-free. [ 1.937955] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.938023] Modules linked in: [ 1.938064] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.938127] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.938178] Workqueue: netns cleanup_net [ 1.938216] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.938259] Code: a5 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 d5 a5 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 1.938386] RSP: 0018:ffffb9ff80257d50 EFLAGS: 00010286 [ 1.938426] RAX: 0000000000000000 RBX: ffffb9ff80257d60 RCX: 00000000ffffdfff [ 1.938484] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.938533] RBP: ffffb9ff80257858 R08: ffffffffa655ba28 R09: 00000000ffffdfff [ 1.938585] R10: ffffffffa647ba40 R11: ffffffffa652ba40 R12: dead000000000122 [ 1.938641] R13: 00000000fffb7333 R14: 0000000000000001 R15: ffff9b1704006000 [ 1.938695] FS: 0000000000000000(0000) GS:ffff9b1797f91000(0000) knlGS:0000000000000000 [ 1.938749] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.938798] CR2: 000055dbaa30bdec CR3: 00000000043bd003 CR4: 0000000000772ef0 [ 1.938852] PKRU: 55555554 [ 1.938875] Call Trace: [ 1.938895] [ 1.938912] netdev_run_todo+0x21a/0x550 [ 1.938948] ops_undo_list+0x1e3/0x1f0 [ 1.938978] cleanup_net+0x1b7/0x300 [ 1.939005] process_one_work+0x162/0x380 [ 1.939043] worker_thread+0x299/0x3c0 [ 1.939074] ? rescuer_thread+0x4c0/0x4c0 [ 1.939104] kthread+0x101/0x1f0 [ 1.939140] ? kthreads_online_cpu+0x110/0x110 [ 1.939186] ? kthreads_online_cpu+0x110/0x110 [ 1.939222] ret_from_fork+0x11c/0x140 [ 1.939254] ? kthreads_online_cpu+0x110/0x110 [ 1.939297] ret_from_fork_asm+0x11/0x20 [ 1.939333] [ 1.939355] ---[ end trace 0000000000000000 ]---