BUG: memory leak
unreferenced object 0xffff888128ac1080 (size 32):
  comm "syz-executor.0", pid 6877, jiffies 4294947966 (age 14.280s)
  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:
    [<0000000032b9f718>] erase_aeb+0x25/0x110 drivers/mtd/ubi/wl.c:1690
    [<000000009322f237>] ubi_wl_init+0x193/0x5c0 drivers/mtd/ubi/wl.c:1757
    [<0000000025767b58>] ubi_attach+0x611/0x18ba drivers/mtd/ubi/attach.c:1605
    [<0000000058d0a4e1>] ubi_attach_mtd_dev+0x665/0xcc0 drivers/mtd/ubi/build.c:967
    [<000000001fa8e71b>] ctrl_cdev_ioctl+0x144/0x1b0 drivers/mtd/ubi/cdev.c:1043
    [<0000000014c93dbc>] vfs_ioctl fs/ioctl.c:47 [inline]
    [<0000000014c93dbc>] ksys_ioctl+0xa6/0xd0 fs/ioctl.c:771
    [<00000000b1699c7d>] __do_sys_ioctl fs/ioctl.c:780 [inline]
    [<00000000b1699c7d>] __se_sys_ioctl fs/ioctl.c:778 [inline]
    [<00000000b1699c7d>] __x64_sys_ioctl+0x1a/0x20 fs/ioctl.c:778
    [<00000000e48a265e>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:295
    [<000000003322d578>] entry_SYSCALL_64_after_hwframe+0x44/0xa9