syz_io_uring_setup(0x5913, &(0x7f0000001700)={0x0, 0x8573, 0x3a, 0x2a, 0x0, 0x0, r0}, &(0x7f0000e9f000/0x2000)=nil, &(0x7f0000e33000/0x1000)=nil, &(0x7f0000001780), &(0x7f00000017c0))
BUG: memory leak
unreferenced object 0xffff8880095eec00 (size 256):
  comm "syz-executor.1", pid 10763, jiffies 4295727498 (age 23.631s)
  hex dump (first 32 bytes):
    49 fb 8e 42 80 88 ff ff ff ef e9 20 00 00 00 00  I..B....... ....
    ff 0f f3 20 00 00 00 00 ff 0f fb 20 00 00 00 00  ... ....... ....
  backtrace:
    [<00000000d3180d9b>] mas_alloc_nodes+0x36e/0x6a0
    [<0000000020797ff2>] mas_preallocate+0xff/0x270
    [<00000000f7e16caf>] do_mas_align_munmap.constprop.0+0x16a/0xfe0
    [<0000000053fa1875>] do_mas_munmap+0x1ed/0x2c0
    [<00000000657b095a>] mmap_region+0x21c/0x1a00
    [<000000004b8351e5>] do_mmap+0x824/0xf40
    [<000000003cb2ad1a>] vm_mmap_pgoff+0x1b5/0x280
    [<00000000c5943ea1>] ksys_mmap_pgoff+0x3cc/0x4f0
    [<000000003fa2c058>] do_syscall_64+0x3b/0x90
    [<0000000053ebfa40>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

BUG: leak checking failed