read(0xffffffffffffffff, &(0x7f0000000000), 0xfffffdef)
openat(0xffffffffffffff9c, 0x0, 0x0, 0x0)
fcntl$getownex(0xffffffffffffffff, 0x10, 0x0)
openat(0xffffffffffffff9c, 0x0, 0x4042, 0x0)
BUG: memory leak
unreferenced object 0xffff88800da5f000 (size 256):
  comm "syz-executor.3", pid 41849, jiffies 4297289608 (age 20.807s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 00 00 00 00 05 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000003ce3322>] mas_alloc_nodes+0x36e/0x6a0
    [<000000004013286e>] mas_node_count+0x101/0x130
    [<000000004c528673>] mas_expected_entries+0x10c/0x1b0
    [<000000003dd30394>] dup_mmap+0x433/0xf80
    [<000000009639263e>] dup_mm+0x91/0x370
    [<000000003ae3539b>] copy_process+0x6bbf/0x6d80
    [<0000000079b63638>] kernel_clone+0xe7/0xa60
    [<00000000440cac17>] __do_sys_fork+0x7c/0xb0
    [<000000001ab27aa6>] do_syscall_64+0x3b/0x90
    [<00000000c4c8019e>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

BUG: leak checking failed