device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode bond1 (unregistering): Released all slaves ------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 1 PID: 16951 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Modules linked in: CPU: 1 PID: 16951 Comm: kworker/u4:11 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Code: 1d 29 14 82 09 31 ff 89 de e8 ad ae 9e fd 84 db 75 e0 e8 64 a8 9e fd 48 c7 c7 20 2a e4 89 c6 05 09 14 82 09 01 e8 c1 55 1b 05 <0f> 0b eb c4 e8 48 a8 9e fd 0f b6 1d f8 13 82 09 31 ff 89 de e8 78 RSP: 0018:ffffc9000392f910 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880753b3a00 RSI: ffffffff815ef908 RDI: fffff52000725f14 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815e96ee R11: 0000000000000000 R12: ffff8880753225b0 R13: 0000000000000002 R14: ffff888011f96b68 R15: ffff88806b1a4a50 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee6a647740 CR3: 000000007f0f0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __refcount_dec include/linux/refcount.h:344 [inline] refcount_dec include/linux/refcount.h:359 [inline] dev_put include/linux/netdevice.h:4166 [inline] netdev_queue_release+0x91/0xa0 net/core/net-sysfs.c:1622 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 netdev_queue_update_kobjects+0x310/0x460 net/core/net-sysfs.c:1725 remove_queue_kobjects net/core/net-sysfs.c:1822 [inline] netdev_unregister_kobject+0x15b/0x1f0 net/core/net-sysfs.c:1972 unregister_netdevice_many+0xd1f/0x1790 net/core/dev.c:11101 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:11604 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295