[ 1.747003] ------------[ cut here ]------------ [ 1.747093] refcount_t: underflow; use-after-free. [ 1.747166] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.747253] Modules linked in: veth [ 1.747297] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.747389] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.747450] Workqueue: netns cleanup_net [ 1.747503] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.747558] Code: b8 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 51 b8 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 [ 1.747729] RSP: 0018:ffff9ef000067d50 EFLAGS: 00010286 [ 1.747785] RAX: 0000000000000000 RBX: ffff9ef000067d60 RCX: 00000000ffffdfff [ 1.747861] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.747932] RBP: ffff9ef000067880 R08: ffffffffb8956a28 R09: 00000000ffffdfff [ 1.748003] R10: ffffffffb8876a40 R11: ffffffffb8926a40 R12: dead000000000122 [ 1.748073] R13: 00000000fffb7274 R14: 0000000000000001 R15: ffff900cc3289000 [ 1.748147] FS: 0000000000000000(0000) GS:ffff900d45be2000(0000) knlGS:0000000000000000 [ 1.748226] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.748283] CR2: 0000560d0d97c3b8 CR3: 00000000032d0005 CR4: 0000000000772ef0 [ 1.748364] PKRU: 55555554 [ 1.748392] Call Trace: [ 1.748420] [ 1.748449] netdev_run_todo+0x21a/0x550 [ 1.748492] ops_undo_list+0x1e3/0x1f0 [ 1.748533] cleanup_net+0x1b7/0x2b0 [ 1.748583] process_one_work+0x162/0x380 [ 1.748632] worker_thread+0x299/0x3c0 [ 1.748675] ? rescuer_thread+0x4c0/0x4c0 [ 1.748717] kthread+0x101/0x1f0 [ 1.748759] ? kthreads_online_cpu+0x110/0x110 [ 1.748813] ? kthreads_online_cpu+0x110/0x110 [ 1.748862] ret_from_fork+0x11c/0x140 [ 1.748906] ? kthreads_online_cpu+0x110/0x110 [ 1.748959] ret_from_fork_asm+0x11/0x20 [ 1.749004] [ 1.749033] ---[ end trace 0000000000000000 ]---