[ 1.856902] ------------[ cut here ]------------ [ 1.856972] refcount_t: underflow; use-after-free. [ 1.857034] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.857102] Modules linked in: veth [ 1.857136] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.857202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.857255] Workqueue: netns cleanup_net [ 1.857304] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.857348] Code: 8b 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 d1 8b 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 [ 1.857483] RSP: 0018:ffffba798024fd50 EFLAGS: 00010286 [ 1.857535] RAX: 0000000000000000 RBX: ffffba798024fd60 RCX: 00000000ffffdfff [ 1.857593] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.857654] RBP: ffffba798024f880 R08: ffffffff8c156a28 R09: 00000000ffffdfff [ 1.857708] R10: ffffffff8c076a40 R11: ffffffff8c126a40 R12: dead000000000122 [ 1.857780] R13: 00000000fffb72de R14: 0000000000000001 R15: ffff8fe44112f000 [ 1.857839] FS: 0000000000000000(0000) GS:ffff8fe4f23e2000(0000) knlGS:0000000000000000 [ 1.857908] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.857961] CR2: 00007ffa45104000 CR3: 0000000005844003 CR4: 0000000000772ef0 [ 1.858020] PKRU: 55555554 [ 1.858042] Call Trace: [ 1.858067] [ 1.858089] netdev_run_todo+0x21a/0x550 [ 1.858131] ops_undo_list+0x1e3/0x1f0 [ 1.858169] cleanup_net+0x1b7/0x2b0 [ 1.858202] process_one_work+0x162/0x380 [ 1.858244] worker_thread+0x299/0x3c0 [ 1.858286] ? rescuer_thread+0x4c0/0x4c0 [ 1.858322] kthread+0x101/0x1f0 [ 1.858355] ? kthreads_online_cpu+0x110/0x110 [ 1.858396] ? kthreads_online_cpu+0x110/0x110 [ 1.858437] ret_from_fork+0x11c/0x140 [ 1.858475] ? kthreads_online_cpu+0x110/0x110 [ 1.858521] ret_from_fork_asm+0x11/0x20 [ 1.858559] [ 1.858581] ---[ end trace 0000000000000000 ]---