[ 5.483745] ------------[ cut here ]------------ [ 5.483828] refcount_t: underflow; use-after-free. [ 5.483896] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 5.483983] Modules linked in: [ 5.484021] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 5.484109] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.484171] Workqueue: netns cleanup_net [ 5.484217] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 5.484265] 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 [ 5.484414] RSP: 0018:ffffbb3d0024fd50 EFLAGS: 00010286 [ 5.484463] RAX: 0000000000000000 RBX: ffffbb3d0024fd60 RCX: 00000000ffffdfff [ 5.484523] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 5.484587] RBP: ffffbb3d0024f858 R08: ffffffffa655ba28 R09: 00000000ffffdfff [ 5.484660] R10: ffffffffa647ba40 R11: ffffffffa652ba40 R12: dead000000000122 [ 5.484740] R13: 00000000fffb8104 R14: 0000000000000001 R15: ffff96d50496d000 [ 5.484820] FS: 0000000000000000(0000) GS:ffff96d597f91000(0000) knlGS:0000000000000000 [ 5.484895] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.484955] CR2: 00007fd5a2e6d760 CR3: 0000000033c46004 CR4: 0000000000772ef0 [ 5.485034] PKRU: 55555554 [ 5.485059] Call Trace: [ 5.485087] [ 5.485113] netdev_run_todo+0x21a/0x550 [ 5.485153] ops_undo_list+0x1e3/0x1f0 [ 5.485191] cleanup_net+0x1b7/0x300 [ 5.485229] process_one_work+0x162/0x380 [ 5.485271] worker_thread+0x299/0x3c0 [ 5.485317] ? rescuer_thread+0x4c0/0x4c0 [ 5.485355] kthread+0x101/0x1f0 [ 5.485390] ? kthreads_online_cpu+0x110/0x110 [ 5.485439] ? kthreads_online_cpu+0x110/0x110 [ 5.485485] ret_from_fork+0x11c/0x140 [ 5.485527] ? kthreads_online_cpu+0x110/0x110 [ 5.485573] ret_from_fork_asm+0x11/0x20 [ 5.485619] [ 5.485643] ---[ end trace 0000000000000000 ]---