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selftest/vm: uninitialized variable in main()
Initialize "length" to zero by default. Link: https://lkml.kernel.org/r/YtZzjvHXVXMXxpXO@kili Fixes: ff712a6 ("selftests/vm: cleanup hugetlb file after mremap test") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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