[ 2.480246] ------------[ cut here ]------------ [ 2.480364] refcount_t: underflow; use-after-free. [ 2.480445] WARNING: CPU: 2 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.480537] Modules linked in: [ 2.480594] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.480679] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.480765] Workqueue: netns cleanup_net [ 2.480835] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.480898] Code: 92 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 92 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 [ 2.481062] RSP: 0018:ffffaf4b40257d50 EFLAGS: 00010286 [ 2.481143] RAX: 0000000000000000 RBX: ffffaf4b40257d60 RCX: 00000000ffffdfff [ 2.481231] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.481316] RBP: ffffaf4b40257858 R08: ffffffff9375ba28 R09: 00000000ffffdfff [ 2.481393] R10: ffffffff9367ba40 R11: ffffffff9372ba40 R12: dead000000000122 [ 2.481474] R13: 00000000fffb7552 R14: 0000000000000001 R15: ffff978543dba000 [ 2.481562] FS: 0000000000000000(0000) GS:ffff9785eae91000(0000) knlGS:0000000000000000 [ 2.481650] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.481749] CR2: 00007ffd1fa94598 CR3: 0000000003f59002 CR4: 0000000000772ef0 [ 2.481830] PKRU: 55555554 [ 2.481885] Call Trace: [ 2.481935] [ 2.482003] netdev_run_todo+0x21a/0x550 [ 2.482060] ops_undo_list+0x1e3/0x1f0 [ 2.482115] cleanup_net+0x1b7/0x300 [ 2.482170] process_one_work+0x162/0x380 [ 2.482263] worker_thread+0x299/0x3c0 [ 2.482318] ? rescuer_thread+0x4c0/0x4c0 [ 2.482375] kthread+0x101/0x1f0 [ 2.482435] ? kthreads_online_cpu+0x110/0x110 [ 2.482525] ? kthreads_online_cpu+0x110/0x110 [ 2.482589] ret_from_fork+0x11c/0x140 [ 2.482649] ? kthreads_online_cpu+0x110/0x110 [ 2.482736] ret_from_fork_asm+0x11/0x20 [ 2.482794] [ 2.482837] ---[ end trace 0000000000000000 ]---