BUG: memory leak
unreferenced object 0xffff88812ac62c40 (size 32):
  comm "syz-executor.1", pid 7144, jiffies 4295026874 (age 10.320s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000b769a396>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b769a396>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000b769a396>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b769a396>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000d232e96b>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000d232e96b>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000d232e96b>] net_alloc net/core/net_namespace.c:416 [inline]
    [<00000000d232e96b>] copy_net_ns+0xb2/0x220 net/core/net_namespace.c:463
    [<00000000af379bf4>] create_new_namespaces+0x141/0x2a0 kernel/nsproxy.c:103
    [<000000008b65b0e6>] copy_namespaces+0xa1/0xe0 kernel/nsproxy.c:161
    [<0000000048cca72d>] copy_process+0x10e7/0x2010 kernel/fork.c:2015
    [<00000000da0bbf09>] _do_fork+0x99/0x470 kernel/fork.c:2366
    [<0000000083e85160>] __do_sys_clone kernel/fork.c:2521 [inline]
    [<0000000083e85160>] __se_sys_clone kernel/fork.c:2502 [inline]
    [<0000000083e85160>] __x64_sys_clone+0x8c/0xc0 kernel/fork.c:2502
    [<000000008c2c82d2>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<0000000009109a06>] entry_SYSCALL_64_after_hwframe+0x44/0xa9