+ selftests-mm-set-wno-format-security-to-avoid-uffd-build-warnings.patch added to mm-unstable branch

+ selftests-mm-set-wno-format-security-to-avoid-uffd-build-warnings.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: selftests/mm: set -Wno-format-security to avoid uffd build warnings
has been added to the -mm mm-unstable branch.  Its filename is
     selftests-mm-set-wno-format-security-to-avoid-uffd-build-warnings.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-set-wno-format-security-to-avoid-uffd-build-warnings.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@nvidia.com>
Subject: selftests/mm: set -Wno-format-security to avoid uffd build warnings
Date: Thu, 1 Jun 2023 18:33:53 -0700

The uffd_test_start() is perhaps a little too elaborate about how it
dispatches tests, leading to a clang warning that looks roughly like
this:

"uffd-unit-tests.c:1198:20: warning: format string is not a string literal
(potentially insecure) [-Wformat-security] ...note: treat the string as
an argument to avoid this.
    uffd_test_start(test_name);
"

However, it doesn't seem worth it to rewrite the way uffd_test_start()
works, given that these tests are already deeply unsafe to begin with.

Fix this by just disabling the compiler warning, but only for
uffd-unit-tests.

Link: https://lkml.kernel.org/r/20230602013358.900637-8-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/Makefile |    2 ++
 1 file changed, 2 insertions(+)

--- a/tools/testing/selftests/mm/Makefile~selftests-mm-set-wno-format-security-to-avoid-uffd-build-warnings
+++ a/tools/testing/selftests/mm/Makefile
@@ -173,6 +173,8 @@ $(OUTPUT)/ksm_tests: LDLIBS += -lnuma
 
 $(OUTPUT)/migration: LDLIBS += -lnuma
 
+$(OUTPUT)/uffd-unit-tests: CFLAGS += -Wno-format-security
+
 local_config.mk local_config.h: check_config.sh
 	/bin/sh ./check_config.sh $(CC)
 
_

Patches currently in -mm which might be from jhubbard@nvidia.com 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