BUG: memory leak
unreferenced object 0xffff88811f322b40 (size 32):
  comm "syz-executor.0", pid 6900, jiffies 4294946098 (age 13.680s)
  hex dump (first 32 bytes):
    75 00 00 08 00 00 00 00 40 b4 df 24 81 88 ff ff  u.......@..$....
    80 ea dd 24 81 88 ff ff 01 00 00 00 02 00 00 00  ...$............
  backtrace:
    [<00000000c486f61f>] erase_aeb+0x25/0x110 drivers/mtd/ubi/wl.c:1690
    [<00000000c7bf3028>] ubi_wl_init+0x193/0x5c0 drivers/mtd/ubi/wl.c:1757
    [<0000000024811442>] ubi_attach+0x611/0x18ba drivers/mtd/ubi/attach.c:1605
    [<00000000cd6246fa>] ubi_attach_mtd_dev+0x584/0xca0 drivers/mtd/ubi/build.c:967
    [<00000000fa2730fc>] ctrl_cdev_ioctl+0x143/0x1b0 drivers/mtd/ubi/cdev.c:1043
    [<0000000052658d29>] vfs_ioctl fs/ioctl.c:47 [inline]
    [<0000000052658d29>] ksys_ioctl+0xa6/0xd0 fs/ioctl.c:763
    [<000000000bb73b7a>] __do_sys_ioctl fs/ioctl.c:772 [inline]
    [<000000000bb73b7a>] __se_sys_ioctl fs/ioctl.c:770 [inline]
    [<000000000bb73b7a>] __x64_sys_ioctl+0x1a/0x20 fs/ioctl.c:770
    [<0000000020a02893>] do_syscall_64+0x6e/0x220 arch/x86/entry/common.c:294
    [<00000000fb2fecdd>] entry_SYSCALL_64_after_hwframe+0x44/0xa9