Messages in this thread Patch in this message |  | | From | Mike Kravetz <> | Subject | [PATCH] hugetlb: initialize variable to avoid compiler warning | Date | Fri, 16 Dec 2022 14:45:07 -0800 |
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With the gcc 'maybe-uninitialized' warning enabled, gcc will produce: mm/hugetlb.c:6896:20: warning: ‘chg’ may be used uninitialized This is a false positive, but may be difficult for the compiler to determine. maybe-uninitialized is disabled by default, but this gets flagged as a 0-DAY build regression.
Initialize the variable to silence the warning.
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> --- mm/hugetlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 0dfe441f9f4d..b28b699c0a1a 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6747,7 +6747,7 @@ bool hugetlb_reserve_pages(struct inode *inode, struct vm_area_struct *vma, vm_flags_t vm_flags) { - long chg, add = -1; + long chg = -1, add = -1; struct hstate *h = hstate_inode(inode); struct hugepage_subpool *spool = subpool_inode(inode); struct resv_map *resv_map; -- 2.38.1
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