BUG: memory leak
unreferenced object 0xffff888127cab220 (size 32):
  comm "syz-executor.0", pid 6706, jiffies 4294948198 (age 13.780s)
  hex dump (first 32 bytes):
    00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de  ........".......
    00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00  ................
  backtrace:
    [<000000007b5e07f3>] erase_aeb+0x25/0x110 drivers/mtd/ubi/wl.c:1700
    [<00000000f6da858b>] ubi_wl_init+0x191/0x5c0 drivers/mtd/ubi/wl.c:1767
    [<000000004aa27742>] ubi_attach+0x63b/0x1879 drivers/mtd/ubi/attach.c:1605
    [<0000000008beb067>] ubi_attach_mtd_dev+0x65c/0xd30 drivers/mtd/ubi/build.c:970
    [<000000004b21edb6>] ctrl_cdev_ioctl+0x144/0x1b0 drivers/mtd/ubi/cdev.c:1043
    [<00000000739100f9>] vfs_ioctl fs/ioctl.c:48 [inline]
    [<00000000739100f9>] ksys_ioctl+0xa6/0xd0 fs/ioctl.c:753
    [<00000000506afd2c>] __do_sys_ioctl fs/ioctl.c:762 [inline]
    [<00000000506afd2c>] __se_sys_ioctl fs/ioctl.c:760 [inline]
    [<00000000506afd2c>] __x64_sys_ioctl+0x1a/0x20 fs/ioctl.c:760
    [<00000000f553a8b6>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<00000000a0941224>] entry_SYSCALL_64_after_hwframe+0x44/0xa9