BUG: memory leak
unreferenced object 0xffff88800e146280 (size 64):
  comm "syz-executor.0", pid 18723, jiffies 4298148774 (age 21.292s)
  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:
    [<00000000d082149e>] kmalloc_node include/linux/slab.h:575 [inline]
    [<00000000d082149e>] kzalloc_node include/linux/slab.h:675 [inline]
    [<00000000d082149e>] disk_expand_part_tbl+0x17c/0x3a0 block/genhd.c:1522
    [<0000000005e651b9>] __alloc_disk_node+0x112/0x390 block/genhd.c:1737
    [<00000000c546cfb1>] loop_add+0x38c/0x8b0 drivers/block/loop.c:2137
    [<0000000024803a20>] loop_control_ioctl drivers/block/loop.c:2272 [inline]
    [<0000000024803a20>] loop_control_ioctl+0x170/0x480 drivers/block/loop.c:2254
    [<0000000067ca4806>] vfs_ioctl fs/ioctl.c:48 [inline]
    [<0000000067ca4806>] __do_sys_ioctl fs/ioctl.c:753 [inline]
    [<0000000067ca4806>] __se_sys_ioctl fs/ioctl.c:739 [inline]
    [<0000000067ca4806>] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739
    [<00000000ba0a109d>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
    [<00000000d857cbd1>] entry_SYSCALL_64_after_hwframe+0x61/0xc6

BUG: leak checking failed