[ 2.855030] ------------[ cut here ]------------ [ 2.855093] refcount_t: underflow; use-after-free. [ 2.855150] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.855246] Modules linked in: [ 2.855297] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.855400] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.855467] Workqueue: netns cleanup_net [ 2.855524] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.855589] Code: 9d 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 9d 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 [ 2.855794] RSP: 0018:ffffa3040024fd50 EFLAGS: 00010286 [ 2.855861] RAX: 0000000000000000 RBX: ffffa3040024fd60 RCX: 00000000ffffdfff [ 2.855952] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.856037] RBP: ffffa3040024f858 R08: ffffffff9d95ba28 R09: 00000000ffffdfff [ 2.856121] R10: ffffffff9d87ba40 R11: ffffffff9d92ba40 R12: dead000000000122 [ 2.856207] R13: 00000000fffb76c9 R14: 0000000000000001 R15: ffff8fc3860ba000 [ 2.856295] FS: 0000000000000000(0000) GS:ffff8fc420b91000(0000) knlGS:0000000000000000 [ 2.856386] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.856463] CR2: 00007fd968051000 CR3: 0000000023046006 CR4: 0000000000772ef0 [ 2.856549] PKRU: 55555554 [ 2.856576] Call Trace: [ 2.856606] [ 2.856640] netdev_run_todo+0x21a/0x550 [ 2.856694] ops_undo_list+0x1e3/0x1f0 [ 2.856751] cleanup_net+0x1b7/0x300 [ 2.856801] process_one_work+0x162/0x380 [ 2.856868] worker_thread+0x299/0x3c0 [ 2.856930] ? rescuer_thread+0x4c0/0x4c0 [ 2.856981] kthread+0x101/0x1f0 [ 2.857032] ? kthreads_online_cpu+0x110/0x110 [ 2.857096] ? kthreads_online_cpu+0x110/0x110 [ 2.857160] ret_from_fork+0x11c/0x140 [ 2.857212] ? kthreads_online_cpu+0x110/0x110 [ 2.857276] ret_from_fork_asm+0x11/0x20 [ 2.857330] [ 2.857365] ---[ end trace 0000000000000000 ]---