[ 16.091851] ------------[ cut here ]------------ [ 16.091961] refcount_t: underflow; use-after-free. [ 16.092026] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 16.092094] Modules linked in: [ 16.092131] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 16.092223] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.092280] Workqueue: netns cleanup_net [ 16.092321] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 16.092369] Code: bc 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 15 bc 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 [ 16.092507] RSP: 0018:ffffaf540024fd50 EFLAGS: 00010286 [ 16.092549] RAX: 0000000000000000 RBX: ffffaf540024fd60 RCX: 00000000ffffdfff [ 16.092611] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 16.092671] RBP: ffffaf540024f858 R08: ffffffffbc95ba28 R09: 00000000ffffdfff [ 16.092738] R10: ffffffffbc87ba40 R11: ffffffffbc92ba40 R12: dead000000000122 [ 16.092837] R13: 00000000fffbaa6d R14: 0000000000000001 R15: ffff99a94553d000 [ 16.092913] FS: 0000000000000000(0000) GS:ffff99a9c1b91000(0000) knlGS:0000000000000000 [ 16.092981] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.093037] CR2: 0000562f5fe01dec CR3: 0000000008560006 CR4: 0000000000772ef0 [ 16.093101] PKRU: 55555554 [ 16.093126] Call Trace: [ 16.093152] [ 16.093184] netdev_run_todo+0x21a/0x550 [ 16.093232] ops_undo_list+0x1e3/0x1f0 [ 16.093274] cleanup_net+0x1b7/0x300 [ 16.093312] process_one_work+0x162/0x380 [ 16.093351] worker_thread+0x299/0x3c0 [ 16.093393] ? rescuer_thread+0x4c0/0x4c0 [ 16.093430] kthread+0x101/0x1f0 [ 16.093464] ? kthreads_online_cpu+0x110/0x110 [ 16.093509] ? kthreads_online_cpu+0x110/0x110 [ 16.093551] ret_from_fork+0x11c/0x140 [ 16.093591] ? kthreads_online_cpu+0x110/0x110 [ 16.093632] ret_from_fork_asm+0x11/0x20 [ 16.093674] [ 16.093700] ---[ end trace 0000000000000000 ]---