linux_kselftest-fixes-6.12-rc2

This kselftest fixes update for Linux 6.12-rc2 consists of fixes
 to build warnings, install scripts, run-time error path, and
 git status cleanups to tests:
 
 -- devices/probe: fix for Python3 regex string syntax warnings
 -- clone3: removing unused macro from clone3_cap_checkpoint_restore()
 -- vDSO: fix to align getrandom states to cache line
 -- core and exec: add missing executables to .gitignore files
 -- rtc: change to skip test if /dev/rtc0 can't be accessed
 -- timers/posix: fix warn_unused_result result in __fatal_error()
 -- breakpoints: fix to detect suspend successful condition correctly
 -- hid: fix to install required dependencies to run the test
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Merge tag 'linux_kselftest-fixes-6.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "Fixes to build warnings, install scripts, run-time error path, and git
  status cleanups to tests:

   - devices/probe: fix for Python3 regex string syntax warnings

   - clone3: removing unused macro from clone3_cap_checkpoint_restore()

   - vDSO: fix to align getrandom states to cache line

   - core and exec: add missing executables to .gitignore files

   - rtc: change to skip test if /dev/rtc0 can't be accessed

   - timers/posix: fix warn_unused_result result in __fatal_error()

   - breakpoints: fix to detect suspend successful condition correctly

   - hid: fix to install required dependencies to run the test"

* tag 'linux_kselftest-fixes-6.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: breakpoints: use remaining time to check if suspend succeed
  kselftest/devices/probe: Fix SyntaxWarning in regex strings for Python3
  selftest: hid: add missing run-hid-tools-tests.sh
  selftests: vDSO: align getrandom states to cache line
  selftests: exec: update gitignore for load_address
  selftests: core: add unshare_test to gitignore
  clone3: clone3_cap_checkpoint_restore: remove unused MAX_PID_NS_LEVEL macro
  selftests:timers: posix_timers: Fix warn_unused_result in __fatal_error()
  selftest: rtc: Check if could access /dev/rtc0 before testing

tools/testing/selftests/breakpoints/step_after_suspend_test.c

@@ -152,7 +152,10 @@ void suspend(void)
 	if (err < 0)
 		ksft_exit_fail_msg("timerfd_settime() failed\n");
 
-	if (write(power_state_fd, "mem", strlen("mem")) != strlen("mem"))
+	system("(echo mem > /sys/power/state) 2> /dev/null");
+
+	timerfd_gettime(timerfd, &spec);
+	if (spec.it_value.tv_sec != 0 || spec.it_value.tv_nsec != 0)
 		ksft_exit_fail_msg("Failed to enter Suspend state\n");
 
 	close(timerfd);

tools/testing/selftests/clone3/clone3_cap_checkpoint_restore.c

@@ -27,8 +27,6 @@
 #include "../kselftest_harness.h"
 #include "clone3_selftests.h"
 
-#define MAX_PID_NS_LEVEL 32
-
 static void child_exit(int ret)
 {
 	fflush(stdout);

tools/testing/selftests/core/.gitignore

@@ -1 +1,2 @@
 close_range_test
+unshare_test

tools/testing/selftests/devices/probe/test_discoverable_devices.py

@@ -45,7 +45,7 @@ def find_pci_controller_dirs():
 
 
 def find_usb_controller_dirs():
-    usb_controller_sysfs_dir = "usb[\d]+"
+    usb_controller_sysfs_dir = r"usb[\d]+"
 
     dir_regex = re.compile(usb_controller_sysfs_dir)
     for d in os.scandir(sysfs_usb_devices):
@@ -91,7 +91,7 @@ def get_acpi_uid(sysfs_dev_dir):
 
 
 def get_usb_version(sysfs_dev_dir):
-    re_usb_version = re.compile("PRODUCT=.*/(\d)/.*")
+    re_usb_version = re.compile(r"PRODUCT=.*/(\d)/.*")
     with open(os.path.join(sysfs_dev_dir, "uevent")) as f:
         return int(re_usb_version.search(f.read()).group(1))
 

tools/testing/selftests/exec/.gitignore

@@ -9,7 +9,8 @@ execveat.ephemeral
 execveat.denatured
 non-regular
 null-argv
-/load_address_*
+/load_address.*
+!load_address.c
 /recursion-depth
 xxxxxxxx*
 pipe

tools/testing/selftests/hid/Makefile

@@ -17,6 +17,8 @@ TEST_PROGS += hid-tablet.sh
 TEST_PROGS += hid-usb_crash.sh
 TEST_PROGS += hid-wacom.sh
 
+TEST_FILES := run-hid-tools-tests.sh
+
 CXX ?= $(CROSS_COMPILE)g++
 
 HOSTPKG_CONFIG := pkg-config

tools/testing/selftests/rtc/rtctest.c

@@ -412,6 +412,8 @@ TEST_F_TIMEOUT(rtc, alarm_wkalm_set_minute, 65) {
 
 int main(int argc, char **argv)
 {
+	int ret = -1;
+
 	switch (argc) {
 	case 2:
 		rtc_file = argv[1];
@@ -423,5 +425,12 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	return test_harness_run(argc, argv);
+	/* Run the test if rtc_file is accessible */
+	if (access(rtc_file, R_OK) == 0)
+		ret = test_harness_run(argc, argv);
+	else
+		ksft_exit_skip("[SKIP]: Cannot access rtc file %s - Exiting\n",
+						rtc_file);
+
+	return ret;
 }

tools/testing/selftests/timers/posix_timers.c

@@ -26,13 +26,17 @@
 static void __fatal_error(const char *test, const char *name, const char *what)
 {
 	char buf[64];
+	char *ret_str = NULL;
 
-	strerror_r(errno, buf, sizeof(buf));
+	ret_str = strerror_r(errno, buf, sizeof(buf));
 
-	if (name && strlen(name))
+	if (name && strlen(name) && ret_str)
-		ksft_exit_fail_msg("%s %s %s %s\n", test, name, what, buf);
+		ksft_exit_fail_msg("%s %s %s %s\n", test, name, what, ret_str);
+	else if (ret_str)
+		ksft_exit_fail_msg("%s %s %s\n", test, what, ret_str);
 	else
-		ksft_exit_fail_msg("%s %s %s\n", test, what, buf);
+		ksft_exit_fail_msg("%s %s\n", test, what);
+
 }
 
 #define fatal_error(name, what)	__fatal_error(__func__, name, what)

tools/testing/selftests/vDSO/vdso_test_getrandom.c

@@ -59,10 +59,12 @@ static void *vgetrandom_get_state(void)
 		size_t page_size = getpagesize();
 		size_t new_cap;
 		size_t alloc_size, num = sysconf(_SC_NPROCESSORS_ONLN); /* Just a decent heuristic. */
+		size_t state_size_aligned, cache_line_size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE) ?: 1;
 		void *new_block, *new_states;
 
-		alloc_size = (num * vgrnd.params.size_of_opaque_state + page_size - 1) & (~(page_size - 1));
+		state_size_aligned = (vgrnd.params.size_of_opaque_state + cache_line_size - 1) & (~(cache_line_size - 1));
-		num = (page_size / vgrnd.params.size_of_opaque_state) * (alloc_size / page_size);
+		alloc_size = (num * state_size_aligned + page_size - 1) & (~(page_size - 1));
+		num = (page_size / state_size_aligned) * (alloc_size / page_size);
 		new_block = mmap(0, alloc_size, vgrnd.params.mmap_prot, vgrnd.params.mmap_flags, -1, 0);
 		if (new_block == MAP_FAILED)
 			goto out;
@@ -78,7 +80,7 @@ static void *vgetrandom_get_state(void)
 			if (((uintptr_t)new_block & (page_size - 1)) + vgrnd.params.size_of_opaque_state > page_size)
 				new_block = (void *)(((uintptr_t)new_block + page_size - 1) & (~(page_size - 1)));
 			vgrnd.states[i] = new_block;
-			new_block += vgrnd.params.size_of_opaque_state;
+			new_block += state_size_aligned;
 		}
 		vgrnd.len = num;
 		goto success;