[ 1.655953] ------------[ cut here ]------------ [ 1.656025] refcount_t: underflow; use-after-free. [ 1.656074] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.656141] Modules linked in: veth [ 1.656184] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.656252] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.656297] Workqueue: netns cleanup_net [ 1.656331] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.656373] Code: b4 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 b1 b4 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 [ 1.656504] RSP: 0018:ffffac5200067d50 EFLAGS: 00010286 [ 1.656546] RAX: 0000000000000000 RBX: ffffac5200067d60 RCX: 00000000ffffdfff [ 1.656606] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.656661] RBP: ffffac5200067880 R08: ffffffffb4f56a28 R09: 00000000ffffdfff [ 1.656716] R10: ffffffffb4e76a40 R11: ffffffffb4f26a40 R12: dead000000000122 [ 1.656773] R13: 00000000fffb721a R14: 0000000000000001 R15: ffff8bf38112d000 [ 1.656829] FS: 0000000000000000(0000) GS:ffff8bf4095e2000(0000) knlGS:0000000000000000 [ 1.656888] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.656932] CR2: 00007f18cb66b000 CR3: 0000000005af9004 CR4: 0000000000772ef0 [ 1.656996] PKRU: 55555554 [ 1.657017] Call Trace: [ 1.657043] [ 1.657064] netdev_run_todo+0x21a/0x550 [ 1.657102] ops_undo_list+0x1e3/0x1f0 [ 1.657133] cleanup_net+0x1b7/0x2b0 [ 1.657159] process_one_work+0x162/0x380 [ 1.657194] worker_thread+0x299/0x3c0 [ 1.657227] ? rescuer_thread+0x4c0/0x4c0 [ 1.657266] kthread+0x101/0x1f0 [ 1.657293] ? kthreads_online_cpu+0x110/0x110 [ 1.657330] ? kthreads_online_cpu+0x110/0x110 [ 1.657372] ret_from_fork+0x11c/0x140 [ 1.657410] ? kthreads_online_cpu+0x110/0x110 [ 1.657449] ret_from_fork_asm+0x11/0x20 [ 1.657484] [ 1.657500] ---[ end trace 0000000000000000 ]---