[ 63.356163] ------------[ cut here ]------------ [ 63.356278] refcount_t: underflow; use-after-free. [ 63.356378] WARNING: CPU: 2 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 63.356489] Modules linked in: [ 63.356554] CPU: 2 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 63.356686] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 63.356782] Workqueue: netns cleanup_net [ 63.356851] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 63.356947] Code: ba 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 ba 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 [ 63.357158] RSP: 0018:ffffbae30024fd50 EFLAGS: 00010286 [ 63.357250] RAX: 0000000000000000 RBX: ffffbae30024fd60 RCX: 00000000ffffdfff [ 63.357359] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 63.357461] RBP: ffffbae30024f858 R08: ffffffffbb75ba28 R09: 00000000ffffdfff [ 63.357574] R10: ffffffffbb67ba40 R11: ffffffffbb72ba40 R12: dead000000000122 [ 63.357687] R13: 00000000fffc631e R14: 0000000000000001 R15: ffff935906a6a000 [ 63.357796] FS: 0000000000000000(0000) GS:ffff935982e91000(0000) knlGS:0000000000000000 [ 63.357912] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.358012] CR2: 00007fb31dccee50 CR3: 000000000841a005 CR4: 0000000000772ef0 [ 63.358130] PKRU: 55555554 [ 63.358199] Call Trace: [ 63.358249] [ 63.358296] netdev_run_todo+0x21a/0x550 [ 63.358367] ops_undo_list+0x1e3/0x1f0 [ 63.358454] cleanup_net+0x1b7/0x300 [ 63.358514] process_one_work+0x162/0x380 [ 63.358590] worker_thread+0x299/0x3c0 [ 63.358656] ? rescuer_thread+0x4c0/0x4c0 [ 63.358717] kthread+0x101/0x1f0 [ 63.358789] ? kthreads_online_cpu+0x110/0x110 [ 63.358849] ? kthreads_online_cpu+0x110/0x110 [ 63.358919] ret_from_fork+0x11c/0x140 [ 63.358982] ? kthreads_online_cpu+0x110/0x110 [ 63.359058] ret_from_fork_asm+0x11/0x20 [ 63.359130] [ 63.359200] ---[ end trace 0000000000000000 ]---