[ 5.018335] ------------[ cut here ]------------ [ 5.018420] refcount_t: underflow; use-after-free. [ 5.018496] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 5.018597] Modules linked in: [ 5.018639] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 5.018740] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.018809] Workqueue: netns cleanup_net [ 5.018864] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 5.018925] Code: 9b 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 9b 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 [ 5.019116] RSP: 0018:ffffafe14024fd50 EFLAGS: 00010286 [ 5.019171] RAX: 0000000000000000 RBX: ffffafe14024fd60 RCX: 00000000ffffdfff [ 5.019252] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 5.019337] RBP: ffffafe14024f858 R08: ffffffff9c75ba28 R09: 00000000ffffdfff [ 5.019420] R10: ffffffff9c67ba40 R11: ffffffff9c72ba40 R12: dead000000000122 [ 5.019500] R13: 00000000fffb7f3e R14: 0000000000000001 R15: ffffa01805e1a000 [ 5.019584] FS: 0000000000000000(0000) GS:ffffa018a1d91000(0000) knlGS:0000000000000000 [ 5.019671] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.019737] CR2: 00000000004061e9 CR3: 000000000355b003 CR4: 0000000000772ef0 [ 5.019818] PKRU: 55555554 [ 5.019845] Call Trace: [ 5.019873] [ 5.019898] netdev_run_todo+0x21a/0x550 [ 5.019948] ops_undo_list+0x1e3/0x1f0 [ 5.019996] cleanup_net+0x1b7/0x300 [ 5.020036] process_one_work+0x162/0x380 [ 5.020087] worker_thread+0x299/0x3c0 [ 5.020136] ? rescuer_thread+0x4c0/0x4c0 [ 5.020183] kthread+0x101/0x1f0 [ 5.020231] ? kthreads_online_cpu+0x110/0x110 [ 5.020285] ? kthreads_online_cpu+0x110/0x110 [ 5.020343] ret_from_fork+0x11c/0x140 [ 5.020394] ? kthreads_online_cpu+0x110/0x110 [ 5.020448] ret_from_fork_asm+0x11/0x20 [ 5.020491] [ 5.020516] ---[ end trace 0000000000000000 ]---