[ 1.836167] ip (257) used greatest stack depth: 12136 bytes left [ 2.029508] ------------[ cut here ]------------ [ 2.029600] refcount_t: underflow; use-after-free. [ 2.029663] WARNING: CPU: 1 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.029738] Modules linked in: [ 2.029774] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.029843] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.029896] Workqueue: netns cleanup_net [ 2.029936] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.029981] Code: 98 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 55 98 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 [ 2.030115] RSP: 0018:ffffb10ec024fd50 EFLAGS: 00010286 [ 2.030157] RAX: 0000000000000000 RBX: ffffb10ec024fd60 RCX: 00000000ffffdfff [ 2.030218] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.030272] RBP: ffffb10ec024f858 R08: ffffffff98d5ba28 R09: 00000000ffffdfff [ 2.030333] R10: ffffffff98c7ba40 R11: ffffffff98d2ba40 R12: dead000000000122 [ 2.030394] R13: 00000000fffb7387 R14: 0000000000000001 R15: ffff88b404f7f000 [ 2.030457] FS: 0000000000000000(0000) GS:ffff88b4a5811000(0000) knlGS:0000000000000000 [ 2.030521] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.030573] CR2: 00007fca309ad730 CR3: 000000003a846003 CR4: 0000000000772ef0 [ 2.030636] PKRU: 55555554 [ 2.030659] Call Trace: [ 2.030685] [ 2.030708] netdev_run_todo+0x21a/0x550 [ 2.030742] ops_undo_list+0x1e3/0x1f0 [ 2.030777] cleanup_net+0x1b7/0x300 [ 2.030810] process_one_work+0x162/0x380 [ 2.030850] worker_thread+0x299/0x3c0 [ 2.030886] ? rescuer_thread+0x4c0/0x4c0 [ 2.030920] kthread+0x101/0x1f0 [ 2.030954] ? kthreads_online_cpu+0x110/0x110 [ 2.030998] ? kthreads_online_cpu+0x110/0x110 [ 2.031042] ret_from_fork+0x11c/0x140 [ 2.031082] ? kthreads_online_cpu+0x110/0x110 [ 2.031127] ret_from_fork_asm+0x11/0x20 [ 2.031164] [ 2.031187] ---[ end trace 0000000000000000 ]---