[ 1.932355] ------------[ cut here ]------------ [ 1.932476] refcount_t: underflow; use-after-free. [ 1.932544] WARNING: CPU: 1 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.932661] Modules linked in: veth [ 1.932693] CPU: 1 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.932768] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.932817] Workqueue: netns cleanup_net [ 1.932854] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.932898] Code: a0 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 91 a0 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 [ 1.933030] RSP: 0018:ffffb97ac0257d50 EFLAGS: 00010286 [ 1.933069] RAX: 0000000000000000 RBX: ffffb97ac0257d60 RCX: 00000000ffffdfff [ 1.933134] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.933198] RBP: ffffb97ac0257880 R08: ffffffffa0d56a28 R09: 00000000ffffdfff [ 1.933253] R10: ffffffffa0c76a40 R11: ffffffffa0d26a40 R12: dead000000000122 [ 1.933331] R13: 00000000fffb7326 R14: 0000000000000001 R15: ffff94f143110000 [ 1.933400] FS: 0000000000000000(0000) GS:ffff94f1dd862000(0000) knlGS:0000000000000000 [ 1.933461] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.933517] CR2: 000055ec96e62a68 CR3: 000000001e841003 CR4: 0000000000772ef0 [ 1.933572] PKRU: 55555554 [ 1.933600] Call Trace: [ 1.933620] [ 1.933642] netdev_run_todo+0x21a/0x550 [ 1.933676] ops_undo_list+0x1e3/0x1f0 [ 1.933715] cleanup_net+0x1b7/0x2b0 [ 1.933748] process_one_work+0x162/0x380 [ 1.933791] worker_thread+0x299/0x3c0 [ 1.933821] ? rescuer_thread+0x4c0/0x4c0 [ 1.933857] kthread+0x101/0x1f0 [ 1.933888] ? kthreads_online_cpu+0x110/0x110 [ 1.933927] ? kthreads_online_cpu+0x110/0x110 [ 1.933975] ret_from_fork+0x11c/0x140 [ 1.934009] ? kthreads_online_cpu+0x110/0x110 [ 1.934049] ret_from_fork_asm+0x11/0x20 [ 1.934095] [ 1.934121] ---[ end trace 0000000000000000 ]---