[ 6.943536] ------------[ cut here ]------------ [ 6.943694] refcount_t: underflow; use-after-free. [ 6.943800] WARNING: CPU: 2 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 6.943915] Modules linked in: [ 6.944020] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 6.944130] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 6.944212] Workqueue: netns cleanup_net [ 6.944280] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 6.944354] Code: 95 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 35 95 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 [ 6.944560] RSP: 0018:ffffb05f00067d50 EFLAGS: 00010286 [ 6.944631] RAX: 0000000000000000 RBX: ffffb05f00067d60 RCX: 00000000ffffdfff [ 6.944730] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 6.944831] RBP: ffffb05f00067858 R08: ffffffff95b5ba28 R09: 00000000ffffdfff [ 6.944927] R10: ffffffff95a7ba40 R11: ffffffff95b2ba40 R12: dead000000000122 [ 6.945016] R13: 00000000fffb86a4 R14: 0000000000000001 R15: ffff8f5b8648a000 [ 6.945110] FS: 0000000000000000(0000) GS:ffff8f5c28a91000(0000) knlGS:0000000000000000 [ 6.945204] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.945293] CR2: 00007efdb8caefd0 CR3: 0000000004337002 CR4: 0000000000772ef0 [ 6.945392] PKRU: 55555554 [ 6.945450] Call Trace: [ 6.945530] [ 6.945580] netdev_run_todo+0x21a/0x550 [ 6.945704] ops_undo_list+0x1e3/0x1f0 [ 6.945780] cleanup_net+0x1b7/0x300 [ 6.945851] process_one_work+0x162/0x380 [ 6.945924] worker_thread+0x299/0x3c0 [ 6.946011] ? rescuer_thread+0x4c0/0x4c0 [ 6.946086] kthread+0x101/0x1f0 [ 6.946163] ? kthreads_online_cpu+0x110/0x110 [ 6.946252] ? kthreads_online_cpu+0x110/0x110 [ 6.946339] ret_from_fork+0x11c/0x140 [ 6.946414] ? kthreads_online_cpu+0x110/0x110 [ 6.946505] ret_from_fork_asm+0x11/0x20 [ 6.946582] [ 6.946640] ---[ end trace 0000000000000000 ]---