[ 2.927400] ------------[ cut here ]------------ [ 2.927509] refcount_t: underflow; use-after-free. [ 2.927590] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.927683] Modules linked in: [ 2.927725] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.927823] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.927891] Workqueue: netns cleanup_net [ 2.927947] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.928002] Code: a2 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 f5 a2 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 [ 2.928188] RSP: 0018:ffffb1958025fd50 EFLAGS: 00010286 [ 2.928240] RAX: 0000000000000000 RBX: ffffb1958025fd60 RCX: 00000000ffffdfff [ 2.928327] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.928409] RBP: ffffb1958025f858 R08: ffffffffa375ba28 R09: 00000000ffffdfff [ 2.928488] R10: ffffffffa367ba40 R11: ffffffffa372ba40 R12: dead000000000122 [ 2.928567] R13: 00000000fffb76fa R14: 0000000000000001 R15: ffff9d1d44f1d000 [ 2.928648] FS: 0000000000000000(0000) GS:ffff9d1ddad91000(0000) knlGS:0000000000000000 [ 2.928738] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.928801] CR2: 00007f427f352658 CR3: 0000000004e2a002 CR4: 0000000000772ef0 [ 2.928881] PKRU: 55555554 [ 2.928906] Call Trace: [ 2.928937] [ 2.928968] netdev_run_todo+0x21a/0x550 [ 2.929021] ops_undo_list+0x1e3/0x1f0 [ 2.929068] cleanup_net+0x1b7/0x300 [ 2.929110] process_one_work+0x162/0x380 [ 2.929163] worker_thread+0x299/0x3c0 [ 2.929202] ? rescuer_thread+0x4c0/0x4c0 [ 2.929242] kthread+0x101/0x1f0 [ 2.929291] ? kthreads_online_cpu+0x110/0x110 [ 2.929349] ? kthreads_online_cpu+0x110/0x110 [ 2.929404] ret_from_fork+0x11c/0x140 [ 2.929456] ? kthreads_online_cpu+0x110/0x110 [ 2.929509] ret_from_fork_asm+0x11/0x20 [ 2.929559] [ 2.929593] ---[ end trace 0000000000000000 ]---