[PATCH 1/1] selftests: livepatch: add test cases of stack_order sysfs interface

From: Wardenjohn
Date: Tue Oct 08 2024 - 04:27:53 EST

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Add selftest test cases to sysfs attribute 'stack_order'.

Signed-off-by: Wardenjohn <zhangwarden@xxxxxxxxx>
---
.../testing/selftests/livepatch/test-sysfs.sh | 71 +++++++++++++++++++
.../selftests/livepatch/test_modules/Makefile | 5 +-
.../test_klp_livepatch_noreplace.c | 53 ++++++++++++++
.../test_klp_livepatch_noreplace2.c | 53 ++++++++++++++
.../test_klp_livepatch_noreplace3.c | 53 ++++++++++++++
5 files changed, 234 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace.c
create mode 100644 tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace2.c
create mode 100644 tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace3.c

diff --git a/tools/testing/selftests/livepatch/test-sysfs.sh b/tools/testing/selftests/livepatch/test-sysfs.sh
index 05a14f5a7bfb..a086b62fb488 100755
--- a/tools/testing/selftests/livepatch/test-sysfs.sh
+++ b/tools/testing/selftests/livepatch/test-sysfs.sh
@@ -5,6 +5,9 @@
. $(dirname $0)/functions.sh

MOD_LIVEPATCH=test_klp_livepatch
+MOD_LIVEPATCH_NOREPLACE=test_klp_livepatch_noreplace
+MOD_LIVEPATCH_NOREPLACE2=test_klp_livepatch_noreplace2
+MOD_LIVEPATCH_NOREPLACE3=test_klp_livepatch_noreplace3

setup_config

@@ -131,4 +134,72 @@ livepatch: '$MOD_LIVEPATCH': completing unpatching transition
livepatch: '$MOD_LIVEPATCH': unpatching complete
% rmmod $MOD_LIVEPATCH"

+start_test "sysfs test stack_order read"
+
+load_lp $MOD_LIVEPATCH_NOREPLACE
+
+check_sysfs_rights "$MOD_LIVEPATCH_NOREPLACE" "stack_order" "-r--r--r--"
+check_sysfs_value "$MOD_LIVEPATCH_NOREPLACE" "stack_order" "1"
+
+load_lp $MOD_LIVEPATCH_NOREPLACE2
+
+check_sysfs_rights "$MOD_LIVEPATCH_NOREPLACE2" "stack_order" "-r--r--r--"
+check_sysfs_value "$MOD_LIVEPATCH_NOREPLACE2" "stack_order" "2"
+
+load_lp $MOD_LIVEPATCH_NOREPLACE3
+
+check_sysfs_rights "$MOD_LIVEPATCH_NOREPLACE3" "stack_order" "-r--r--r--"
+check_sysfs_value "$MOD_LIVEPATCH_NOREPLACE3" "stack_order" "3"
+
+disable_lp $MOD_LIVEPATCH_NOREPLACE2
+unload_lp $MOD_LIVEPATCH_NOREPLACE2
+
+check_sysfs_rights "$MOD_LIVEPATCH_NOREPLACE" "stack_order" "-r--r--r--"
+check_sysfs_value "$MOD_LIVEPATCH_NOREPLACE" "stack_order" "1"
+check_sysfs_rights "$MOD_LIVEPATCH_NOREPLACE3" "stack_order" "-r--r--r--"
+check_sysfs_value "$MOD_LIVEPATCH_NOREPLACE3" "stack_order" "2"
+
+disable_lp $MOD_LIVEPATCH_NOREPLACE3
+unload_lp $MOD_LIVEPATCH_NOREPLACE3
+
+disable_lp $MOD_LIVEPATCH_NOREPLACE
+unload_lp $MOD_LIVEPATCH_NOREPLACE
+
+check_result "% insmod test_modules/$MOD_LIVEPATCH_NOREPLACE.ko
+livepatch: enabling patch '$MOD_LIVEPATCH_NOREPLACE'
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': initializing patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': starting patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': completing patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': patching complete
+% insmod test_modules/$MOD_LIVEPATCH_NOREPLACE2.ko
+livepatch: enabling patch '$MOD_LIVEPATCH_NOREPLACE2'
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': initializing patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': starting patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': completing patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': patching complete
+% insmod test_modules/$MOD_LIVEPATCH_NOREPLACE3.ko
+livepatch: enabling patch '$MOD_LIVEPATCH_NOREPLACE3'
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': initializing patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': starting patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': completing patching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': patching complete
+% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH_NOREPLACE2/enabled
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': initializing unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': starting unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': completing unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE2': unpatching complete
+% rmmod $MOD_LIVEPATCH_NOREPLACE2
+% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH_NOREPLACE3/enabled
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': initializing unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': starting unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': completing unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE3': unpatching complete
+% rmmod $MOD_LIVEPATCH_NOREPLACE3
+% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH_NOREPLACE/enabled
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': initializing unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': starting unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': completing unpatching transition
+livepatch: '$MOD_LIVEPATCH_NOREPLACE': unpatching complete
+% rmmod $MOD_LIVEPATCH_NOREPLACE"
+
exit 0
diff --git a/tools/testing/selftests/livepatch/test_modules/Makefile b/tools/testing/selftests/livepatch/test_modules/Makefile
index e6e638c4bcba..dad6ca00d3e6 100644
--- a/tools/testing/selftests/livepatch/test_modules/Makefile
+++ b/tools/testing/selftests/livepatch/test_modules/Makefile
@@ -11,7 +11,10 @@ obj-m += test_klp_atomic_replace.o \
test_klp_state2.o \
test_klp_state3.o \
test_klp_shadow_vars.o \
- test_klp_syscall.o
+ test_klp_syscall.o \
+ test_klp_livepatch_noreplace.o \
+ test_klp_livepatch_noreplace2.o \
+ test_klp_livepatch_noreplace3.o \

# Ensure that KDIR exists, otherwise skip the compilation
modules:
diff --git a/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace.c b/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace.c
new file mode 100644
index 000000000000..ead609aeac67
--- /dev/null
+++ b/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2014 Seth Jennings <sjenning@xxxxxxxxxx>
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/livepatch.h>
+
+#include <linux/seq_file.h>
+static int livepatch_cmdline_proc_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%s: %s\n", THIS_MODULE->name,
+ "this has been live patched with number 1");
+ return 0;
+}
+
+static struct klp_func funcs[] = {
+ {
+ .old_name = "cmdline_proc_show",
+ .new_func = livepatch_cmdline_proc_show,
+ }, { }
+};
+
+static struct klp_object objs[] = {
+ {
+ /* name being NULL means vmlinux */
+ .funcs = funcs,
+ }, { }
+};
+
+static struct klp_patch patch = {
+ .mod = THIS_MODULE,
+ .objs = objs,
+ .replace = false,
+};
+
+static int test_klp_livepatch_init(void)
+{
+ return klp_enable_patch(&patch);
+}
+
+static void test_klp_livepatch_exit(void)
+{
+}
+
+module_init(test_klp_livepatch_init);
+module_exit(test_klp_livepatch_exit);
+MODULE_LICENSE("GPL");
+MODULE_INFO(livepatch, "Y");
+MODULE_AUTHOR("Seth Jennings <sjenning@xxxxxxxxxx>");
+MODULE_AUTHOR("Wardenjohn <zhangwarden@xxxxxxxxx>");
+MODULE_DESCRIPTION("Livepatch test: livepatch module");
diff --git a/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace2.c b/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace2.c
new file mode 100644
index 000000000000..8d54b0976be1
--- /dev/null
+++ b/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace2.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2014 Seth Jennings <sjenning@xxxxxxxxxx>
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/livepatch.h>
+
+#include <linux/seq_file.h>
+static int livepatch_cmdline_proc_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%s: %s\n", THIS_MODULE->name,
+ "this has been live patched with number 2");
+ return 0;
+}
+
+static struct klp_func funcs[] = {
+ {
+ .old_name = "cmdline_proc_show",
+ .new_func = livepatch_cmdline_proc_show,
+ }, { }
+};
+
+static struct klp_object objs[] = {
+ {
+ /* name being NULL means vmlinux */
+ .funcs = funcs,
+ }, { }
+};
+
+static struct klp_patch patch = {
+ .mod = THIS_MODULE,
+ .objs = objs,
+ .replace = false,
+};
+
+static int test_klp_livepatch_init(void)
+{
+ return klp_enable_patch(&patch);
+}
+
+static void test_klp_livepatch_exit(void)
+{
+}
+
+module_init(test_klp_livepatch_init);
+module_exit(test_klp_livepatch_exit);
+MODULE_LICENSE("GPL");
+MODULE_INFO(livepatch, "Y");
+MODULE_AUTHOR("Seth Jennings <sjenning@xxxxxxxxxx>");
+MODULE_AUTHOR("Wardenjohn <zhangwarden@xxxxxxxxx>");
+MODULE_DESCRIPTION("Livepatch test: livepatch module");
diff --git a/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace3.c b/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace3.c
new file mode 100644
index 000000000000..a267c58e07d4
--- /dev/null
+++ b/tools/testing/selftests/livepatch/test_modules/test_klp_livepatch_noreplace3.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2014 Seth Jennings <sjenning@xxxxxxxxxx>
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/livepatch.h>
+
+#include <linux/seq_file.h>
+static int livepatch_cmdline_proc_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%s: %s\n", THIS_MODULE->name,
+ "this has been live patched with number 3");
+ return 0;
+}
+
+static struct klp_func funcs[] = {
+ {
+ .old_name = "cmdline_proc_show",
+ .new_func = livepatch_cmdline_proc_show,
+ }, { }
+};
+
+static struct klp_object objs[] = {
+ {
+ /* name being NULL means vmlinux */
+ .funcs = funcs,
+ }, { }
+};
+
+static struct klp_patch patch = {
+ .mod = THIS_MODULE,
+ .objs = objs,
+ .replace = false,
+};
+
+static int test_klp_livepatch_init(void)
+{
+ return klp_enable_patch(&patch);
+}
+
+static void test_klp_livepatch_exit(void)
+{
+}
+
+module_init(test_klp_livepatch_init);
+module_exit(test_klp_livepatch_exit);
+MODULE_LICENSE("GPL");
+MODULE_INFO(livepatch, "Y");
+MODULE_AUTHOR("Seth Jennings <sjenning@xxxxxxxxxx>");
+MODULE_AUTHOR("Wardenjohn <zhangwarden@xxxxxxxxx>");
+MODULE_DESCRIPTION("Livepatch test: livepatch module");
--
2.43.5

Next message: David Hildenbrand: "Re: [PATCH] mm/mremap: Fix move_normal_pmd/retract_page_tables race"
Previous message: Wardenjohn: "[PATCH 0/1] selftests: livepatch: add test cases of stack_order sysfs"
In reply to: Wardenjohn: "[PATCH 0/1] selftests: livepatch: add test cases of stack_order sysfs"
Next in thread: Marcos Paulo de Souza: "Re: [PATCH 1/1] selftests: livepatch: add test cases of stack_order sysfs interface"
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