[ 2.335599] ------------[ cut here ]------------ [ 2.335656] refcount_t: underflow; use-after-free. [ 2.335703] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.335767] Modules linked in: [ 2.335801] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.335866] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.335913] Workqueue: netns cleanup_net [ 2.335950] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.335996] 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 75 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 [ 2.336116] RSP: 0018:ffffbd0740067d50 EFLAGS: 00010286 [ 2.336175] RAX: 0000000000000000 RBX: ffffbd0740067d60 RCX: 00000000ffffdfff [ 2.336253] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.336335] RBP: ffffbd0740067858 R08: ffffffff9df5ba28 R09: 00000000ffffdfff [ 2.336415] R10: ffffffff9de7ba40 R11: ffffffff9df2ba40 R12: dead000000000122 [ 2.336497] R13: 00000000fffb74bd R14: 0000000000000001 R15: ffffa0b805ccd000 [ 2.336574] FS: 0000000000000000(0000) GS:ffffa0b8a0591000(0000) knlGS:0000000000000000 [ 2.336635] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.336676] CR2: 00005619dddf9ed8 CR3: 0000000020c46002 CR4: 0000000000772ef0 [ 2.336732] PKRU: 55555554 [ 2.336753] Call Trace: [ 2.336771] [ 2.336794] netdev_run_todo+0x21a/0x550 [ 2.336827] ops_undo_list+0x1e3/0x1f0 [ 2.336857] cleanup_net+0x1b7/0x300 [ 2.336890] process_one_work+0x162/0x380 [ 2.336925] worker_thread+0x299/0x3c0 [ 2.336956] ? rescuer_thread+0x4c0/0x4c0 [ 2.336991] kthread+0x101/0x1f0 [ 2.337024] ? kthreads_online_cpu+0x110/0x110 [ 2.337063] ? kthreads_online_cpu+0x110/0x110 [ 2.337103] ret_from_fork+0x11c/0x140 [ 2.337140] ? kthreads_online_cpu+0x110/0x110 [ 2.337181] ret_from_fork_asm+0x11/0x20 [ 2.337212] [ 2.337234] ---[ end trace 0000000000000000 ]---