The patch titled
Subject: tools/testing/selftests/vm/hugetlb-madvise.c: silence uninitialized variable warning
has been added to the -mm mm-unstable branch. Its filename is
selftests-vm-silence-uninitialized-variable-warning.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-vm-silence-uninitialized-variable-warning.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Subject: tools/testing/selftests/vm/hugetlb-madvise.c: silence uninitialized variable warning
Date: Tue, 19 Jul 2022 12:42:48 +0300
This code just reads from memory without caring about the data itself.
However static checkers complain that "tmp" is never properly initialized.
Initialize it to zero and change the name to "dummy" to show that we
don't care about the value stored in it.
Link: https://lkml.kernel.org/r/YtZ8mKJmktA2GaHB@kili
Fixes: c4b6cb884011 ("selftests/vm: add hugetlb madvise MADV_DONTNEED MADV_REMOVE test")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/hugetlb-madvise.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/tools/testing/selftests/vm/hugetlb-madvise.c~selftests-vm-silence-uninitialized-variable-warning
+++ a/tools/testing/selftests/vm/hugetlb-madvise.c
@@ -89,10 +89,11 @@ void write_fault_pages(void *addr, unsig
void read_fault_pages(void *addr, unsigned long nr_pages)
{
- unsigned long i, tmp;
+ unsigned long dummy = 0;
+ unsigned long i;
for (i = 0; i < nr_pages; i++)
- tmp += *((unsigned long *)(addr + (i * huge_page_size)));
+ dummy += *((unsigned long *)(addr + (i * huge_page_size)));
}
int main(int argc, char **argv)
_
Patches currently in -mm which might be from dan.carpenter@xxxxxxxxxx are
selftests-vm-silence-uninitialized-variable-warning.patch
