BUG: memory leak
unreferenced object 0xffff888127c32800 (size 32):
  comm "syz-executor.0", pid 6690, jiffies 4294948267 (age 13.910s)
  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:
    [<00000000692a9f2c>] erase_aeb+0x25/0x110 drivers/mtd/ubi/wl.c:1700
    [<00000000f5b2acc0>] ubi_wl_init+0x191/0x5c0 drivers/mtd/ubi/wl.c:1767
    [<000000007bf77831>] ubi_attach+0x63b/0x1879 drivers/mtd/ubi/attach.c:1605
    [<0000000027f46cdc>] ubi_attach_mtd_dev+0x65c/0xd30 drivers/mtd/ubi/build.c:970
    [<00000000e9177040>] ctrl_cdev_ioctl+0x144/0x1b0 drivers/mtd/ubi/cdev.c:1043
    [<000000004147b473>] vfs_ioctl fs/ioctl.c:48 [inline]
    [<000000004147b473>] ksys_ioctl+0xa6/0xd0 fs/ioctl.c:753
    [<000000003eb9a4f4>] __do_sys_ioctl fs/ioctl.c:762 [inline]
    [<000000003eb9a4f4>] __se_sys_ioctl fs/ioctl.c:760 [inline]
    [<000000003eb9a4f4>] __x64_sys_ioctl+0x1a/0x20 fs/ioctl.c:760
    [<00000000a86b191d>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<00000000dd8051e1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9