BUG: memory leak
unreferenced object 0xffff88811f202820 (size 32):
  comm "syz-executor.0", pid 6654, jiffies 4294948022 (age 13.860s)
  hex dump (first 32 bytes):
    75 00 00 08 00 00 00 00 49 eb 38 1f 81 88 ff ff  u.......I.8.....
    d8 6c 1d 1f 81 88 ff ff 01 00 00 00 02 00 00 00  .l..............
  backtrace:
    [<0000000031a505f0>] erase_aeb+0x25/0x110 drivers/mtd/ubi/wl.c:1700
    [<00000000d8e0722f>] ubi_wl_init+0x191/0x5c0 drivers/mtd/ubi/wl.c:1767
    [<000000000c7c6379>] ubi_attach+0x63b/0x1879 drivers/mtd/ubi/attach.c:1605
    [<000000007904d09f>] ubi_attach_mtd_dev+0x65c/0xd30 drivers/mtd/ubi/build.c:970
    [<00000000e617b256>] ctrl_cdev_ioctl+0x144/0x1b0 drivers/mtd/ubi/cdev.c:1043
    [<00000000a2146de3>] vfs_ioctl fs/ioctl.c:48 [inline]
    [<00000000a2146de3>] ksys_ioctl+0xa6/0xd0 fs/ioctl.c:753
    [<000000006d24db01>] __do_sys_ioctl fs/ioctl.c:762 [inline]
    [<000000006d24db01>] __se_sys_ioctl fs/ioctl.c:760 [inline]
    [<000000006d24db01>] __x64_sys_ioctl+0x1a/0x20 fs/ioctl.c:760
    [<0000000070534a21>] do_syscall_64+0x4c/0xe0 arch/x86/entry/common.c:384
    [<00000000d9396619>] entry_SYSCALL_64_after_hwframe+0x44/0xa9