[ 2.002586] ------------[ cut here ]------------ [ 2.002713] refcount_t: underflow; use-after-free. [ 2.002779] WARNING: CPU: 3 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.002876] Modules linked in: veth [ 2.002927] CPU: 3 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.003031] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.003104] Workqueue: netns cleanup_net [ 2.003153] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.003218] Code: 92 e8 f8 c3 ba ff 90 0f 0b 90 90 c3 80 3d 39 c1 eb 00 00 75 89 c6 05 30 c1 eb 00 01 90 48 c7 c7 30 a0 f1 92 e8 d5 c3 ba ff 90 <0f> 0b 90 90 c3 80 3d 14 c1 eb 00 00 0f 85 62 ff ff ff c6 05 07 c1 [ 2.003406] RSP: 0018:ffff9f1bc0257d50 EFLAGS: 00010286 [ 2.003462] RAX: 0000000000000000 RBX: ffff9f1bc0257d60 RCX: 00000000ffffdfff [ 2.003543] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.003617] RBP: ffff9f1bc0257880 R08: ffffffff93356a28 R09: 00000000ffffdfff [ 2.003700] R10: ffffffff93276a40 R11: ffffffff93326a40 R12: dead000000000122 [ 2.003782] R13: 00000000fffb735c R14: 0000000000000001 R15: ffff8c44c30dc000 [ 2.003868] FS: 0000000000000000(0000) GS:ffff8c456b362000(0000) knlGS:0000000000000000 [ 2.003958] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.004021] CR2: 00007fdbd26daa50 CR3: 000000000319f005 CR4: 0000000000772ef0 [ 2.004104] PKRU: 55555554 [ 2.004131] Call Trace: [ 2.004161] [ 2.004196] netdev_run_todo+0x21a/0x550 [ 2.004248] ops_undo_list+0x1e3/0x1f0 [ 2.004295] cleanup_net+0x1b7/0x2b0 [ 2.004337] process_one_work+0x162/0x380 [ 2.004387] worker_thread+0x299/0x3c0 [ 2.004435] ? rescuer_thread+0x4c0/0x4c0 [ 2.004479] kthread+0x101/0x1f0 [ 2.004526] ? kthreads_online_cpu+0x110/0x110 [ 2.004590] ? kthreads_online_cpu+0x110/0x110 [ 2.004635] ret_from_fork+0x11c/0x140 [ 2.004677] ? kthreads_online_cpu+0x110/0x110 [ 2.004733] ret_from_fork_asm+0x11/0x20 [ 2.004784] [ 2.004810] ---[ end trace 0000000000000000 ]---