[ 1.766732] ------------[ cut here ]------------ [ 1.766817] refcount_t: underflow; use-after-free. [ 1.766879] WARNING: CPU: 3 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.766943] Modules linked in: veth [ 1.766982] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.767047] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.767113] Workqueue: netns cleanup_net [ 1.767149] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.767199] Code: 9a 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 9a 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 [ 1.767349] RSP: 0018:ffffa0208024fd50 EFLAGS: 00010286 [ 1.767403] RAX: 0000000000000000 RBX: ffffa0208024fd60 RCX: 00000000ffffdfff [ 1.767459] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.767514] RBP: ffffa0208024f880 R08: ffffffff9a956a28 R09: 00000000ffffdfff [ 1.767570] R10: ffffffff9a876a40 R11: ffffffff9a926a40 R12: dead000000000122 [ 1.767626] R13: 00000000fffb7287 R14: 0000000000000001 R15: ffff88c1c53b9000 [ 1.767682] FS: 0000000000000000(0000) GS:ffff88c263d62000(0000) knlGS:0000000000000000 [ 1.767748] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.767796] CR2: 00007f93810c7000 CR3: 000000000530e002 CR4: 0000000000772ef0 [ 1.767851] PKRU: 55555554 [ 1.767872] Call Trace: [ 1.767892] [ 1.767912] netdev_run_todo+0x21a/0x550 [ 1.767950] ops_undo_list+0x1e3/0x1f0 [ 1.767985] cleanup_net+0x1b7/0x2b0 [ 1.768016] process_one_work+0x162/0x380 [ 1.768052] worker_thread+0x299/0x3c0 [ 1.768082] ? rescuer_thread+0x4c0/0x4c0 [ 1.768118] kthread+0x101/0x1f0 [ 1.768162] ? kthreads_online_cpu+0x110/0x110 [ 1.768203] ? kthreads_online_cpu+0x110/0x110 [ 1.768257] ret_from_fork+0x11c/0x140 [ 1.768292] ? kthreads_online_cpu+0x110/0x110 [ 1.768335] ret_from_fork_asm+0x11/0x20 [ 1.768385] [ 1.768408] ---[ end trace 0000000000000000 ]---