The patch titled
Subject: selftests/mm: fix a "possibly uninitialized" warning in pkey-x86.h
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-fix-a-possibly-uninitialized-warning-in-pkey-x86h.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-fix-a-possibly-uninitialized-warning-in-pkey-x86h.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: John Hubbard <jhubbard@xxxxxxxxxx>
Subject: selftests/mm: fix a "possibly uninitialized" warning in pkey-x86.h
Date: Thu, 1 Jun 2023 18:33:54 -0700
This fixes a real bug, too, because xstate_size() was assuming that
the stack variable xstate_size was initialized to zero. That's not
guaranteed nor even especially likely.
Link: https://lkml.kernel.org/r/20230602013358.900637-9-jhubbard@xxxxxxxxxx
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/pkey-x86.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/mm/pkey-x86.h~selftests-mm-fix-a-possibly-uninitialized-warning-in-pkey-x86h
+++ a/tools/testing/selftests/mm/pkey-x86.h
@@ -132,7 +132,7 @@ int pkey_reg_xstate_offset(void)
unsigned int ecx;
unsigned int edx;
int xstate_offset;
- int xstate_size;
+ int xstate_size = 0;
unsigned long XSTATE_CPUID = 0xd;
int leaf;
_
Patches currently in -mm which might be from jhubbard@xxxxxxxxxx are
selftests-mm-fix-uffd-stress-unused-function-warning.patch
selftests-mm-fix-unused-variable-warning-in-hugetlb-madvisec.patch
selftests-mm-fix-unused-variable-warning-in-migrationc.patch
selftests-mm-fix-a-char-assignment-in-mlock2-testsc.patch
selftests-mm-fix-invocation-of-tests-that-are-run-via-shell-scripts.patch
selftests-mm-gitignore-add-mkdirty-va_high_addr_switch.patch
selftests-mm-set-wno-format-security-to-avoid-uffd-build-warnings.patch
selftests-mm-fix-a-possibly-uninitialized-warning-in-pkey-x86h.patch
selftests-mm-move-psize-pshift-into-vm_utilsc.patch
selftests-mm-move-uffd-routines-from-vm_utilc-to-uffd-commonc.patch
selftests-mm-fix-missing-uffdio_continue_mode_wp-and-similar-build-failures.patch
selftests-mm-fix-uffd-unit-testsc-build-failure-due-to-missing-madv_collapse.patch
