BUG: memory leak
unreferenced object 0xffff888127d04580 (size 32):
  comm "syz-executor.0", pid 6901, jiffies 4294946574 (age 16.090s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00  ................
  backtrace:
    [<0000000040ebab8b>] erase_aeb+0x25/0x110 drivers/mtd/ubi/wl.c:1690
    [<00000000ab21e9b9>] ubi_wl_init+0x193/0x5c0 drivers/mtd/ubi/wl.c:1757
    [<00000000257c94ff>] ubi_attach+0x611/0x18ba drivers/mtd/ubi/attach.c:1605
    [<00000000269603da>] ubi_attach_mtd_dev+0x665/0xcc0 drivers/mtd/ubi/build.c:967
    [<000000004b8a8a4a>] ctrl_cdev_ioctl+0x144/0x1b0 drivers/mtd/ubi/cdev.c:1043
    [<00000000832f8bd8>] vfs_ioctl fs/ioctl.c:47 [inline]
    [<00000000832f8bd8>] ksys_ioctl+0xa6/0xd0 fs/ioctl.c:763
    [<000000006d0b027f>] __do_sys_ioctl fs/ioctl.c:772 [inline]
    [<000000006d0b027f>] __se_sys_ioctl fs/ioctl.c:770 [inline]
    [<000000006d0b027f>] __x64_sys_ioctl+0x1a/0x20 fs/ioctl.c:770
    [<000000004dff9286>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:295
    [<000000001cf3136e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9