[ 1.862909] ------------[ cut here ]------------ [ 1.863020] refcount_t: underflow; use-after-free. [ 1.863080] WARNING: CPU: 3 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.863162] Modules linked in: veth [ 1.863204] CPU: 3 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.863285] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.863336] Workqueue: netns cleanup_net [ 1.863383] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.863424] Code: 94 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 94 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 [ 1.863556] RSP: 0018:ffffa4fd80257d50 EFLAGS: 00010286 [ 1.863596] RAX: 0000000000000000 RBX: ffffa4fd80257d60 RCX: 00000000ffffdfff [ 1.863653] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.863719] RBP: ffffa4fd80257880 R08: ffffffff95356a28 R09: 00000000ffffdfff [ 1.863781] R10: ffffffff95276a40 R11: ffffffff95326a40 R12: dead000000000122 [ 1.863863] R13: 00000000fffb72e8 R14: 0000000000000001 R15: ffff88f204f31000 [ 1.863954] FS: 0000000000000000(0000) GS:ffff88f2a9362000(0000) knlGS:0000000000000000 [ 1.864021] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.864069] CR2: 0000000031800688 CR3: 0000000004e2d004 CR4: 0000000000772ef0 [ 1.864127] PKRU: 55555554 [ 1.864147] Call Trace: [ 1.864178] [ 1.864201] netdev_run_todo+0x21a/0x550 [ 1.864245] ops_undo_list+0x1e3/0x1f0 [ 1.864280] cleanup_net+0x1b7/0x2b0 [ 1.864314] process_one_work+0x162/0x380 [ 1.864364] worker_thread+0x299/0x3c0 [ 1.864396] ? rescuer_thread+0x4c0/0x4c0 [ 1.864430] kthread+0x101/0x1f0 [ 1.864475] ? kthreads_online_cpu+0x110/0x110 [ 1.864523] ? kthreads_online_cpu+0x110/0x110 [ 1.864565] ret_from_fork+0x11c/0x140 [ 1.864604] ? kthreads_online_cpu+0x110/0x110 [ 1.864645] ret_from_fork_asm+0x11/0x20 [ 1.864680] [ 1.864702] ---[ end trace 0000000000000000 ]---