BUG: memory leak
unreferenced object 0xffff888127f473c0 (size 32):
  comm "syz-executor.0", pid 6894, jiffies 4294946544 (age 14.070s)
  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:
    [<0000000086548708>] erase_aeb+0x25/0x110 drivers/mtd/ubi/wl.c:1690
    [<000000006bc37e85>] ubi_wl_init+0x193/0x5c0 drivers/mtd/ubi/wl.c:1757
    [<00000000ec7aa331>] ubi_attach+0x611/0x18ba drivers/mtd/ubi/attach.c:1605
    [<000000009a846ad2>] ubi_attach_mtd_dev+0x584/0xca0 drivers/mtd/ubi/build.c:967
    [<00000000ba425f42>] ctrl_cdev_ioctl+0x143/0x1b0 drivers/mtd/ubi/cdev.c:1043
    [<00000000bedfab1f>] vfs_ioctl fs/ioctl.c:47 [inline]
    [<00000000bedfab1f>] ksys_ioctl+0xa6/0xd0 fs/ioctl.c:763
    [<00000000d1881940>] __do_sys_ioctl fs/ioctl.c:772 [inline]
    [<00000000d1881940>] __se_sys_ioctl fs/ioctl.c:770 [inline]
    [<00000000d1881940>] __x64_sys_ioctl+0x1a/0x20 fs/ioctl.c:770
    [<00000000bff25f38>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:294
    [<00000000829e6545>] entry_SYSCALL_64_after_hwframe+0x44/0xa9