BUG: memory leak
unreferenced object 0xffff88800ecca420 (size 200):
  comm "syz-executor.6", pid 293, jiffies 4294752610 (age 983.600s)
  hex dump (first 32 bytes):
    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........
    ff ff ff ff ff ff ff ff 20 1e dd 86 ff ff ff ff  ........ .......
  backtrace:
    [<00000000f629f414>] copy_pid_ns+0x29f/0xa10
    [<00000000a8cee6b9>] create_new_namespaces+0x2b2/0xb30
    [<000000006fcc41f6>] unshare_nsproxy_namespaces+0xc1/0x1f0
    [<000000007f16bbdc>] ksys_unshare+0x445/0x8d0
    [<0000000008fe33d2>] __x64_sys_unshare+0x2d/0x40
    [<000000007c05b013>] do_syscall_64+0x3b/0x90
    [<00000000a13dda28>] entry_SYSCALL_64_after_hwframe+0x44/0xae

BUG: leak checking failed