[ 3.470477] ------------[ cut here ]------------ [ 3.470546] refcount_t: underflow; use-after-free. [ 3.470604] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.470674] Modules linked in: [ 3.470708] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.470785] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.470841] Workqueue: netns cleanup_net [ 3.470882] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.470931] Code: a0 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 a0 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 [ 3.471076] RSP: 0018:ffffa83080067d50 EFLAGS: 00010286 [ 3.471128] RAX: 0000000000000000 RBX: ffffa83080067d60 RCX: 00000000ffffdfff [ 3.471192] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.471265] RBP: ffffa83080067858 R08: ffffffffa175ba28 R09: 00000000ffffdfff [ 3.471327] R10: ffffffffa167ba40 R11: ffffffffa172ba40 R12: dead000000000122 [ 3.471388] R13: 00000000fffb7932 R14: 0000000000000001 R15: ffff98d9439f2000 [ 3.471452] FS: 0000000000000000(0000) GS:ffff98d9dcd91000(0000) knlGS:0000000000000000 [ 3.471522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.471573] CR2: 0000558b3e6ae788 CR3: 0000000035e46004 CR4: 0000000000772ef0 [ 3.471641] PKRU: 55555554 [ 3.471658] Call Trace: [ 3.471685] [ 3.471708] netdev_run_todo+0x21a/0x550 [ 3.471746] ops_undo_list+0x1e3/0x1f0 [ 3.471784] cleanup_net+0x1b7/0x300 [ 3.471819] process_one_work+0x162/0x380 [ 3.471861] worker_thread+0x299/0x3c0 [ 3.471898] ? rescuer_thread+0x4c0/0x4c0 [ 3.471942] kthread+0x101/0x1f0 [ 3.471979] ? kthreads_online_cpu+0x110/0x110 [ 3.472021] ? kthreads_online_cpu+0x110/0x110 [ 3.472070] ret_from_fork+0x11c/0x140 [ 3.472118] ? kthreads_online_cpu+0x110/0x110 [ 3.472164] ret_from_fork_asm+0x11/0x20 [ 3.472210] [ 3.472241] ---[ end trace 0000000000000000 ]---