syz_io_uring_setup(0xffffffff, &(0x7f00000001c0)={0x0, 0x0, 0x10}, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000fff000/0x1000)=nil, &(0x7f0000000100), &(0x7f0000000140)) (fail_nth: 78)
BUG: memory leak
unreferenced object 0xffff888041867a00 (size 256):
  comm "syz-executor.4", pid 8447, jiffies 4296220954 (age 22.623s)
  hex dump (first 32 bytes):
    49 7b 08 46 80 88 ff ff ff cf ff 20 00 00 00 00  I{.F....... ....
    ff df 01 21 00 00 00 00 00 00 00 00 00 00 00 00  ...!............
  backtrace:
    [<0000000062f014cb>] mas_alloc_nodes+0x36e/0x6a0
    [<00000000674c78f0>] mas_preallocate+0xff/0x270
    [<000000005efdd118>] do_mas_align_munmap.constprop.0+0x16a/0xfe0
    [<00000000200187d1>] do_mas_munmap+0x1ed/0x2c0
    [<0000000018c02839>] mmap_region+0x21c/0x1a00
    [<000000006e40820b>] do_mmap+0x824/0xf40
    [<00000000b050e51b>] vm_mmap_pgoff+0x1b5/0x280
    [<000000003b0ec848>] ksys_mmap_pgoff+0x3cc/0x4f0
    [<000000005be3bc2c>] do_syscall_64+0x3b/0x90
    [<00000000da08dfb5>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

BUG: leak checking failed