[ 1.986690] ------------[ cut here ]------------ [ 1.986772] refcount_t: underflow; use-after-free. [ 1.986827] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.986893] Modules linked in: veth [ 1.986924] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.986991] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.987041] Workqueue: netns cleanup_net [ 1.987077] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.987115] Code: 96 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 96 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 [ 1.987243] RSP: 0018:ffff9ae280067d50 EFLAGS: 00010286 [ 1.987302] RAX: 0000000000000000 RBX: ffff9ae280067d60 RCX: 00000000ffffdfff [ 1.987361] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.987414] RBP: ffff9ae280067880 R08: ffffffff97356a28 R09: 00000000ffffdfff [ 1.987471] R10: ffffffff97276a40 R11: ffffffff97326a40 R12: dead000000000122 [ 1.987530] R13: 00000000fffb735e R14: 0000000000000001 R15: ffff8ead84341000 [ 1.987605] FS: 0000000000000000(0000) GS:ffff8eae271e2000(0000) knlGS:0000000000000000 [ 1.987678] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.987726] CR2: 00007f2f0a7a8a50 CR3: 0000000003516004 CR4: 0000000000772ef0 [ 1.987778] PKRU: 55555554 [ 1.987798] Call Trace: [ 1.987817] [ 1.987837] netdev_run_todo+0x21a/0x550 [ 1.987876] ops_undo_list+0x1e3/0x1f0 [ 1.987909] cleanup_net+0x1b7/0x2b0 [ 1.987939] process_one_work+0x162/0x380 [ 1.987976] worker_thread+0x299/0x3c0 [ 1.988006] ? rescuer_thread+0x4c0/0x4c0 [ 1.988037] kthread+0x101/0x1f0 [ 1.988068] ? kthreads_online_cpu+0x110/0x110 [ 1.988106] ? kthreads_online_cpu+0x110/0x110 [ 1.988146] ret_from_fork+0x11c/0x140 [ 1.988179] ? kthreads_online_cpu+0x110/0x110 [ 1.988227] ret_from_fork_asm+0x11/0x20 [ 1.988261] [ 1.988282] ---[ end trace 0000000000000000 ]---