[GIT PULL] Kselftest update for 4.4-rc1

From: Shuah Khan
Date: Mon Nov 09 2015 - 12:22:59 EST

Hi Linus,

Please pull the update for 4.4-rc1. This 12 patch update for
4.4-rc1 consists of a new pstore test and fixes to existing
tests. diff attached.

thanks,
-- Shuah

----------------------------------------------------------------------

The following changes since commit 25cb62b76430a91cc6195f902e61c2cb84ade622:

Linux 4.3-rc5 (2015-10-11 11:09:45 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
tags/linux-kselftest-4.4-rc1

for you to fetch changes up to 3b5bab390181968e403886a45c70f9c13b5b6d29:

selftests: breakpoint: Actually build it (2015-11-03 16:55:08 -0700)

----------------------------------------------------------------
linux-kselftest-4.4-rc1

This 12 patch update for 4.4-rc1 consists of a new pstore
test and fixes to existing tests.

----------------------------------------------------------------
Ben Hutchings (6):
selftests: Add missing #include directives
selftests: memfd: Stop unnecessary rebuilds
selftests: kprobe: Choose an always-defined function to probe
selftests: Make scripts executable
selftests: vm: Try harder to allocate huge pages
selftests: breakpoint: Actually build it

Chunyan Zhang (1):
selftests: memfd_test: Revised STACK_SIZE to make it 16-byte aligned

Hiraku Toyooka (2):
selftests/pstore: add pstore test script for pre-reboot
selftests/pstore: add pstore test scripts going with reboot

Kees Cook (1):
selftests/seccomp: build and pass on arm64

Robert Sesek (1):
selftests/seccomp: Be more precise with syscall arguments.

Yuan Sun (1):
selftests: add .gitignore for efivarfs

tools/testing/selftests/Makefile | 4 +
tools/testing/selftests/breakpoints/Makefile | 2 +-
tools/testing/selftests/efivarfs/.gitignore | 2 +
.../ftrace/test.d/kprobe/add_and_remove.tc | 2 +-
.../selftests/ftrace/test.d/kprobe/busy_check.tc | 2 +-
.../selftests/ftrace/test.d/kprobe/kprobe_args.tc | 2 +-
.../ftrace/test.d/kprobe/kprobe_ftrace.tc | 14 +--
.../ftrace/test.d/kprobe/kretprobe_args.tc | 2 +-
tools/testing/selftests/memfd/Makefile | 12 +--
tools/testing/selftests/memfd/memfd_test.c | 3 +-
tools/testing/selftests/memfd/run_fuse_test.sh | 0
tools/testing/selftests/mqueue/mq_open_tests.c | 1 +
tools/testing/selftests/mqueue/mq_perf_tests.c | 1 +
tools/testing/selftests/pstore/Makefile | 15 +++
tools/testing/selftests/pstore/common_tests | 83 +++++++++++++++
tools/testing/selftests/pstore/pstore_crash_test | 30 ++++++
.../selftests/pstore/pstore_post_reboot_tests | 77 ++++++++++++++
tools/testing/selftests/pstore/pstore_tests | 30 ++++++
tools/testing/selftests/seccomp/seccomp_bpf.c | 117
+++++++++++++++------
.../selftests/static_keys/test_static_keys.sh | 0
tools/testing/selftests/timers/nanosleep.c | 1 +
tools/testing/selftests/vm/run_vmtests | 15 ++-
22 files changed, 362 insertions(+), 53 deletions(-)
create mode 100644 tools/testing/selftests/efivarfs/.gitignore
mode change 100644 => 100755 tools/testing/selftests/memfd/run_fuse_test.sh
create mode 100644 tools/testing/selftests/pstore/Makefile
create mode 100755 tools/testing/selftests/pstore/common_tests
create mode 100755 tools/testing/selftests/pstore/pstore_crash_test
create mode 100755 tools/testing/selftests/pstore/pstore_post_reboot_tests
create mode 100755 tools/testing/selftests/pstore/pstore_tests
mode change 100644 => 100755
tools/testing/selftests/static_keys/test_static_keys.sh

--------------------------------------------------------------------------

--
Shuah Khan
Sr. Linux Kernel Developer
Open Source Innovation Group
Samsung Research America (Silicon Valley)
shuahkh@xxxxxxxxxxxxxxx | (970) 217-8978
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index cfe1213..2458288 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -13,6 +13,7 @@ TARGETS += mount
TARGETS += mqueue
TARGETS += net
TARGETS += powerpc
+TARGETS += pstore
TARGETS += ptrace
TARGETS += seccomp
TARGETS += size
@@ -65,6 +66,9 @@ clean_hotplug:
make -C $$TARGET clean; \
done;

+run_pstore_crash:
+ make -C pstore run_crash
+
INSTALL_PATH ?= install
INSTALL_PATH := $(abspath $(INSTALL_PATH))
ALL_SCRIPT := $(INSTALL_PATH)/run_kselftest.sh
diff --git a/tools/testing/selftests/breakpoints/Makefile b/tools/testing/selftests/breakpoints/Makefile
index d27108b..c0d9570 100644
--- a/tools/testing/selftests/breakpoints/Makefile
+++ b/tools/testing/selftests/breakpoints/Makefile
@@ -6,7 +6,7 @@ ifeq ($(ARCH),x86)
TEST_PROGS := breakpoint_test
endif

-all:
+all: $(TEST_PROGS)

include ../lib.mk

diff --git a/tools/testing/selftests/efivarfs/.gitignore b/tools/testing/selftests/efivarfs/.gitignore
new file mode 100644
index 0000000..3361849
--- /dev/null
+++ b/tools/testing/selftests/efivarfs/.gitignore
@@ -0,0 +1,2 @@
+create-read
+open-unlink
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
index a5a4262..c3843ed 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
@@ -5,7 +5,7 @@

echo 0 > events/enable
echo > kprobe_events
-echo p:myevent do_fork > kprobe_events
+echo p:myevent _do_fork > kprobe_events
grep myevent kprobe_events
test -d events/kprobes/myevent
echo > kprobe_events
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
index d8c7bb6..74507db 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
@@ -5,7 +5,7 @@

echo 0 > events/enable
echo > kprobe_events
-echo p:myevent do_fork > kprobe_events
+echo p:myevent _do_fork > kprobe_events
test -d events/kprobes/myevent
echo 1 > events/kprobes/myevent/enable
echo > kprobe_events && exit 1 # this must fail
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
index c45ee27..64949d4 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
@@ -5,7 +5,7 @@

echo 0 > events/enable
echo > kprobe_events
-echo 'p:testprobe do_fork $stack $stack0 +0($stack)' > kprobe_events
+echo 'p:testprobe _do_fork $stack $stack0 +0($stack)' > kprobe_events
grep testprobe kprobe_events
test -d events/kprobes/testprobe
echo 1 > events/kprobes/testprobe/enable
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc
index ab41d2b..d6f2f49 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc
@@ -6,31 +6,31 @@ grep function available_tracers || exit_unsupported # this is configurable

# prepare
echo nop > current_tracer
-echo do_fork > set_ftrace_filter
+echo _do_fork > set_ftrace_filter
echo 0 > events/enable
echo > kprobe_events
-echo 'p:testprobe do_fork' > kprobe_events
+echo 'p:testprobe _do_fork' > kprobe_events

# kprobe on / ftrace off
echo 1 > events/kprobes/testprobe/enable
echo > trace
( echo "forked")
grep testprobe trace
-! grep 'do_fork <-' trace
+! grep '_do_fork <-' trace

# kprobe on / ftrace on
echo function > current_tracer
echo > trace
( echo "forked")
grep testprobe trace
-grep 'do_fork <-' trace
+grep '_do_fork <-' trace

# kprobe off / ftrace on
echo 0 > events/kprobes/testprobe/enable
echo > trace
( echo "forked")
! grep testprobe trace
-grep 'do_fork <-' trace
+grep '_do_fork <-' trace

# kprobe on / ftrace on
echo 1 > events/kprobes/testprobe/enable
@@ -38,14 +38,14 @@ echo function > current_tracer
echo > trace
( echo "forked")
grep testprobe trace
-grep 'do_fork <-' trace
+grep '_do_fork <-' trace

# kprobe on / ftrace off
echo nop > current_tracer
echo > trace
( echo "forked")
grep testprobe trace
-! grep 'do_fork <-' trace
+! grep '_do_fork <-' trace

# cleanup
echo nop > current_tracer
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
index 3171798..0d09546 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
@@ -5,7 +5,7 @@

echo 0 > events/enable
echo > kprobe_events
-echo 'r:testprobe2 do_fork $retval' > kprobe_events
+echo 'r:testprobe2 _do_fork $retval' > kprobe_events
grep testprobe2 kprobe_events
test -d events/kprobes/testprobe2
echo 1 > events/kprobes/testprobe2/enable
diff --git a/tools/testing/selftests/memfd/Makefile b/tools/testing/selftests/memfd/Makefile
index 3e7eb79..fd396ac 100644
--- a/tools/testing/selftests/memfd/Makefile
+++ b/tools/testing/selftests/memfd/Makefile
@@ -4,16 +4,16 @@ CFLAGS += -I../../../../include/uapi/
CFLAGS += -I../../../../include/
CFLAGS += -I../../../../usr/include/

-all:
- $(CC) $(CFLAGS) memfd_test.c -o memfd_test
-
TEST_PROGS := memfd_test

+all: $(TEST_PROGS)
+
include ../lib.mk

-build_fuse:
- $(CC) $(CFLAGS) fuse_mnt.c `pkg-config fuse --cflags --libs` -o fuse_mnt
- $(CC) $(CFLAGS) fuse_test.c -o fuse_test
+build_fuse: fuse_mnt fuse_test
+
+fuse_mnt.o: CFLAGS += $(shell pkg-config fuse --cflags)
+fuse_mnt: LDFLAGS += $(shell pkg-config fuse --libs)

run_fuse: build_fuse
@./run_fuse_test.sh || echo "fuse_test: [FAIL]"
diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c
index 0b9eafb..2654689 100644
--- a/tools/testing/selftests/memfd/memfd_test.c
+++ b/tools/testing/selftests/memfd/memfd_test.c
@@ -15,10 +15,11 @@
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/syscall.h>
+#include <sys/wait.h>
#include <unistd.h>

#define MFD_DEF_SIZE 8192
-#define STACK_SIZE 65535
+#define STACK_SIZE 65536

static int sys_memfd_create(const char *name,
unsigned int flags)
diff --git a/tools/testing/selftests/memfd/run_fuse_test.sh b/tools/testing/selftests/memfd/run_fuse_test.sh
old mode 100644
new mode 100755
diff --git a/tools/testing/selftests/mqueue/mq_open_tests.c b/tools/testing/selftests/mqueue/mq_open_tests.c
index 9c1a5d35..e0a74bd 100644
--- a/tools/testing/selftests/mqueue/mq_open_tests.c
+++ b/tools/testing/selftests/mqueue/mq_open_tests.c
@@ -31,6 +31,7 @@
#include <sys/resource.h>
#include <sys/stat.h>
#include <mqueue.h>
+#include <error.h>

static char *usage =
"Usage:\n"
diff --git a/tools/testing/selftests/mqueue/mq_perf_tests.c b/tools/testing/selftests/mqueue/mq_perf_tests.c
index 8519e9e..8188f72 100644
--- a/tools/testing/selftests/mqueue/mq_perf_tests.c
+++ b/tools/testing/selftests/mqueue/mq_perf_tests.c
@@ -37,6 +37,7 @@
#include <sys/stat.h>
#include <mqueue.h>
#include <popt.h>
+#include <error.h>

static char *usage =
"Usage:\n"
diff --git a/tools/testing/selftests/pstore/Makefile b/tools/testing/selftests/pstore/Makefile
new file mode 100644
index 0000000..bd7abe2
--- /dev/null
+++ b/tools/testing/selftests/pstore/Makefile
@@ -0,0 +1,15 @@
+# Makefile for pstore selftests.
+# Expects pstore backend is registered.
+
+all:
+
+TEST_PROGS := pstore_tests pstore_post_reboot_tests
+TEST_FILES := common_tests pstore_crash_test
+
+include ../lib.mk
+
+run_crash:
+ @sh pstore_crash_test || { echo "pstore_crash_test: [FAIL]"; exit 1; }
+
+clean:
+ rm -rf logs/* *uuid
diff --git a/tools/testing/selftests/pstore/common_tests b/tools/testing/selftests/pstore/common_tests
new file mode 100755
index 0000000..3ea64d7
--- /dev/null
+++ b/tools/testing/selftests/pstore/common_tests
@@ -0,0 +1,83 @@
+#!/bin/sh
+
+# common_tests - Shell script commonly used by pstore test scripts
+#
+# Copyright (C) Hitachi Ltd., 2015
+# Written by Hiraku Toyooka <hiraku.toyooka.gu@xxxxxxxxxxx>
+#
+# Released under the terms of the GPL v2.
+
+# Utilities
+errexit() { # message
+ echo "Error: $1" 1>&2
+ exit 1
+}
+
+absdir() { # file_path
+ (cd `dirname $1`; pwd)
+}
+
+show_result() { # result_value
+ if [ $1 -eq 0 ]; then
+ prlog "ok"
+ else
+ prlog "FAIL"
+ rc=1
+ fi
+}
+
+check_files_exist() { # type of pstorefs file
+ if [ -e ${1}-${backend}-0 ]; then
+ prlog "ok"
+ for f in `ls ${1}-${backend}-*`; do
+ prlog -e "\t${f}"
+ done
+ else
+ prlog "FAIL"
+ rc=1
+ fi
+}
+
+operate_files() { # tested value, files, operation
+ if [ $1 -eq 0 ]; then
+ prlog
+ for f in $2; do
+ prlog -ne "\t${f} ... "
+ # execute operation
+ $3 $f
+ show_result $?
+ done
+ else
+ prlog " ... FAIL"
+ rc=1
+ fi
+}
+
+# Parameters
+TEST_STRING_PATTERN="Testing pstore: uuid="
+UUID=`cat /proc/sys/kernel/random/uuid`
+TOP_DIR=`absdir $0`
+LOG_DIR=$TOP_DIR/logs/`date +%Y%m%d-%H%M%S`_${UUID}/
+REBOOT_FLAG=$TOP_DIR/reboot_flag
+
+# Preparing logs
+LOG_FILE=$LOG_DIR/`basename $0`.log
+mkdir -p $LOG_DIR || errexit "Failed to make a log directory: $LOG_DIR"
+date > $LOG_FILE
+prlog() { # messages
+ /bin/echo "$@" | tee -a $LOG_FILE
+}
+
+# Starting tests
+rc=0
+prlog "=== Pstore unit tests (`basename $0`) ==="
+prlog "UUID="$UUID
+
+prlog -n "Checking pstore backend is registered ... "
+backend=`cat /sys/module/pstore/parameters/backend`
+show_result $?
+prlog -e "\tbackend=${backend}"
+prlog -e "\tcmdline=`cat /proc/cmdline`"
+if [ $rc -ne 0 ]; then
+ exit 1
+fi
diff --git a/tools/testing/selftests/pstore/pstore_crash_test b/tools/testing/selftests/pstore/pstore_crash_test
new file mode 100755
index 0000000..1a4afe5
--- /dev/null
+++ b/tools/testing/selftests/pstore/pstore_crash_test
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# pstore_crash_test - Pstore test shell script which causes crash and reboot
+#
+# Copyright (C) Hitachi Ltd., 2015
+# Written by Hiraku Toyooka <hiraku.toyooka.gu@xxxxxxxxxxx>
+#
+# Released under the terms of the GPL v2.
+
+# exit if pstore backend is not registered
+. ./common_tests
+
+prlog "Causing kernel crash ..."
+
+# enable all functions triggered by sysrq
+echo 1 > /proc/sys/kernel/sysrq
+# setting to reboot in 3 seconds after panic
+echo 3 > /proc/sys/kernel/panic
+
+# save uuid file by different name because next test execution will replace it.
+mv $TOP_DIR/uuid $TOP_DIR/prev_uuid
+
+# create a file as reboot flag
+touch $REBOOT_FLAG
+sync
+
+# cause crash
+# Note: If you use kdump and want to see kmesg-* files after reboot, you should
+# specify 'crash_kexec_post_notifiers' in 1st kernel's cmdline.
+echo c > /proc/sysrq-trigger
diff --git a/tools/testing/selftests/pstore/pstore_post_reboot_tests b/tools/testing/selftests/pstore/pstore_post_reboot_tests
new file mode 100755
index 0000000..6ccb154
--- /dev/null
+++ b/tools/testing/selftests/pstore/pstore_post_reboot_tests
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+# pstore_post_reboot_tests - Check pstore's behavior after crash/reboot
+#
+# Copyright (C) Hitachi Ltd., 2015
+# Written by Hiraku Toyooka <hiraku.toyooka.gu@xxxxxxxxxxx>
+#
+# Released under the terms of the GPL v2.
+
+. ./common_tests
+
+if [ -e $REBOOT_FLAG ]; then
+ rm $REBOOT_FLAG
+else
+ prlog "pstore_crash_test has not been executed yet. we skip further tests."
+ exit 0
+fi
+
+prlog -n "Mounting pstore filesystem ... "
+mount_info=`grep pstore /proc/mounts`
+if [ $? -eq 0 ]; then
+ mount_point=`echo ${mount_info} | cut -d' ' -f2 | head -n1`
+ prlog "ok"
+else
+ mount none /sys/fs/pstore -t pstore
+ if [ $? -eq 0 ]; then
+ mount_point=`grep pstore /proc/mounts | cut -d' ' -f2 | head -n1`
+ prlog "ok"
+ else
+ prlog "FAIL"
+ exit 1
+ fi
+fi
+
+cd ${mount_point}
+
+prlog -n "Checking dmesg files exist in pstore filesystem ... "
+check_files_exist dmesg
+
+prlog -n "Checking console files exist in pstore filesystem ... "
+check_files_exist console
+
+prlog -n "Checking pmsg files exist in pstore filesystem ... "
+check_files_exist pmsg
+
+prlog -n "Checking dmesg files contain oops end marker"
+grep_end_trace() {
+ grep -q "\---\[ end trace" $1
+}
+files=`ls dmesg-${backend}-*`
+operate_files $? "$files" grep_end_trace
+
+prlog -n "Checking console file contains oops end marker ... "
+grep -q "\---\[ end trace" console-${backend}-0
+show_result $?
+
+prlog -n "Checking pmsg file properly keeps the content written before crash ... "
+prev_uuid=`cat $TOP_DIR/prev_uuid`
+if [ $? -eq 0 ]; then
+ nr_matched=`grep -c "$TEST_STRING_PATTERN" pmsg-${backend}-0`
+ if [ $nr_matched -eq 1 ]; then
+ grep -q "$TEST_STRING_PATTERN"$prev_uuid pmsg-${backend}-0
+ show_result $?
+ else
+ prlog "FAIL"
+ rc=1
+ fi
+else
+ prlog "FAIL"
+ rc=1
+fi
+
+prlog -n "Removing all files in pstore filesystem "
+files=`ls *-${backend}-*`
+operate_files $? "$files" rm
+
+exit $rc
diff --git a/tools/testing/selftests/pstore/pstore_tests b/tools/testing/selftests/pstore/pstore_tests
new file mode 100755
index 0000000..f25d2a3
--- /dev/null
+++ b/tools/testing/selftests/pstore/pstore_tests
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# pstore_tests - Check pstore's behavior before crash/reboot
+#
+# Copyright (C) Hitachi Ltd., 2015
+# Written by Hiraku Toyooka <hiraku.toyooka.gu@xxxxxxxxxxx>
+#
+# Released under the terms of the GPL v2.
+
+. ./common_tests
+
+prlog -n "Checking pstore console is registered ... "
+dmesg | grep -q "console \[pstore"
+show_result $?
+
+prlog -n "Checking /dev/pmsg0 exists ... "
+test -e /dev/pmsg0
+show_result $?
+
+prlog -n "Writing unique string to /dev/pmsg0 ... "
+if [ -e "/dev/pmsg0" ]; then
+ echo "${TEST_STRING_PATTERN}""$UUID" > /dev/pmsg0
+ show_result $?
+ echo "$UUID" > $TOP_DIR/uuid
+else
+ prlog "FAIL"
+ rc=1
+fi
+
+exit $rc
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index 770f47a..e38cc54 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -19,15 +19,19 @@
#include <linux/prctl.h>
#include <linux/ptrace.h>
#include <linux/seccomp.h>
-#include <poll.h>
#include <pthread.h>
#include <semaphore.h>
#include <signal.h>
#include <stddef.h>
#include <stdbool.h>
#include <string.h>
+#include <time.h>
#include <linux/elf.h>
#include <sys/uio.h>
+#include <sys/utsname.h>
+#include <sys/fcntl.h>
+#include <sys/mman.h>
+#include <sys/times.h>

#define _GNU_SOURCE
#include <unistd.h>
@@ -428,14 +432,16 @@ TEST_SIGNAL(KILL_one, SIGSYS)

TEST_SIGNAL(KILL_one_arg_one, SIGSYS)
{
+ void *fatal_address;
struct sock_filter filter[] = {
BPF_STMT(BPF_LD|BPF_W|BPF_ABS,
offsetof(struct seccomp_data, nr)),
- BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_getpid, 1, 0),
+ BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_times, 1, 0),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_ALLOW),
/* Only both with lower 32-bit for now. */
BPF_STMT(BPF_LD|BPF_W|BPF_ABS, syscall_arg(0)),
- BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0x0C0FFEE, 0, 1),
+ BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K,
+ (unsigned long)&fatal_address, 0, 1),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_KILL),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_ALLOW),
};
@@ -445,7 +451,8 @@ TEST_SIGNAL(KILL_one_arg_one, SIGSYS)
};
long ret;
pid_t parent = getppid();
- pid_t pid = getpid();
+ struct tms timebuf;
+ clock_t clock = times(&timebuf);

ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
ASSERT_EQ(0, ret);
@@ -454,17 +461,22 @@ TEST_SIGNAL(KILL_one_arg_one, SIGSYS)
ASSERT_EQ(0, ret);

EXPECT_EQ(parent, syscall(__NR_getppid));
- EXPECT_EQ(pid, syscall(__NR_getpid));
- /* getpid() should never return. */
- EXPECT_EQ(0, syscall(__NR_getpid, 0x0C0FFEE));
+ EXPECT_LE(clock, syscall(__NR_times, &timebuf));
+ /* times() should never return. */
+ EXPECT_EQ(0, syscall(__NR_times, &fatal_address));
}

TEST_SIGNAL(KILL_one_arg_six, SIGSYS)
{
+#ifndef __NR_mmap2
+ int sysno = __NR_mmap;
+#else
+ int sysno = __NR_mmap2;
+#endif
struct sock_filter filter[] = {
BPF_STMT(BPF_LD|BPF_W|BPF_ABS,
offsetof(struct seccomp_data, nr)),
- BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_getpid, 1, 0),
+ BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, sysno, 1, 0),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_ALLOW),
/* Only both with lower 32-bit for now. */
BPF_STMT(BPF_LD|BPF_W|BPF_ABS, syscall_arg(5)),
@@ -478,7 +490,8 @@ TEST_SIGNAL(KILL_one_arg_six, SIGSYS)
};
long ret;
pid_t parent = getppid();
- pid_t pid = getpid();
+ int fd;
+ void *map1, *map2;

ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
ASSERT_EQ(0, ret);
@@ -486,10 +499,22 @@ TEST_SIGNAL(KILL_one_arg_six, SIGSYS)
ret = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &prog);
ASSERT_EQ(0, ret);

+ fd = open("/dev/zero", O_RDONLY);
+ ASSERT_NE(-1, fd);
+
EXPECT_EQ(parent, syscall(__NR_getppid));
- EXPECT_EQ(pid, syscall(__NR_getpid));
- /* getpid() should never return. */
- EXPECT_EQ(0, syscall(__NR_getpid, 1, 2, 3, 4, 5, 0x0C0FFEE));
+ map1 = (void *)syscall(sysno,
+ NULL, PAGE_SIZE, PROT_READ, MAP_PRIVATE, fd, PAGE_SIZE);
+ EXPECT_NE(MAP_FAILED, map1);
+ /* mmap2() should never return. */
+ map2 = (void *)syscall(sysno,
+ NULL, PAGE_SIZE, PROT_READ, MAP_PRIVATE, fd, 0x0C0FFEE);
+ EXPECT_EQ(MAP_FAILED, map2);
+
+ /* The test failed, so clean up the resources. */
+ munmap(map1, PAGE_SIZE);
+ munmap(map2, PAGE_SIZE);
+ close(fd);
}

/* TODO(wad) add 64-bit versus 32-bit arg tests. */
@@ -1247,8 +1272,8 @@ void change_syscall(struct __test_metadata *_metadata,
ret = ptrace(PTRACE_GETREGSET, tracee, NT_PRSTATUS, &iov);
EXPECT_EQ(0, ret);

-#if defined(__x86_64__) || defined(__i386__) || defined(__aarch64__) || \
- defined(__powerpc__) || defined(__s390__)
+#if defined(__x86_64__) || defined(__i386__) || defined(__powerpc__) || \
+ defined(__s390__)
{
regs.SYSCALL_NUM = syscall;
}
@@ -1262,6 +1287,18 @@ void change_syscall(struct __test_metadata *_metadata,
EXPECT_EQ(0, ret);
}

+#elif defined(__aarch64__)
+# ifndef NT_ARM_SYSTEM_CALL
+# define NT_ARM_SYSTEM_CALL 0x404
+# endif
+ {
+ iov.iov_base = &syscall;
+ iov.iov_len = sizeof(syscall);
+ ret = ptrace(PTRACE_SETREGSET, tracee, NT_ARM_SYSTEM_CALL,
+ &iov);
+ EXPECT_EQ(0, ret);
+ }
+
#else
ASSERT_EQ(1, 0) {
TH_LOG("How is the syscall changed on this architecture?");
@@ -1272,6 +1309,8 @@ void change_syscall(struct __test_metadata *_metadata,
if (syscall == -1)
regs.SYSCALL_RET = 1;

+ iov.iov_base = &regs;
+ iov.iov_len = sizeof(regs);
ret = ptrace(PTRACE_SETREGSET, tracee, NT_PRSTATUS, &iov);
EXPECT_EQ(0, ret);
}
@@ -2005,20 +2044,25 @@ TEST(syscall_restart)
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_read, 5, 0),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_exit, 4, 0),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_rt_sigreturn, 3, 0),
- BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_poll, 4, 0),
+ BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_nanosleep, 4, 0),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_restart_syscall, 4, 0),

/* Allow __NR_write for easy logging. */
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_write, 0, 1),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_ALLOW),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_KILL),
- BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE|0x100), /* poll */
- BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE|0x200), /* restart */
+ /* The nanosleep jump target. */
+ BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE|0x100),
+ /* The restart_syscall jump target. */
+ BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE|0x200),
};
struct sock_fprog prog = {
.len = (unsigned short)ARRAY_SIZE(filter),
.filter = filter,
};
+#if defined(__arm__)
+ struct utsname utsbuf;
+#endif

ASSERT_EQ(0, pipe(pipefd));

@@ -2027,10 +2071,7 @@ TEST(syscall_restart)
if (child_pid == 0) {
/* Child uses EXPECT not ASSERT to deliver status correctly. */
char buf = ' ';
- struct pollfd fds = {
- .fd = pipefd[0],
- .events = POLLIN,
- };
+ struct timespec timeout = { };

/* Attach parent as tracer and stop. */
EXPECT_EQ(0, ptrace(PTRACE_TRACEME));
@@ -2054,10 +2095,11 @@ TEST(syscall_restart)
TH_LOG("Failed to get sync data from read()");
}

- /* Start poll to be interrupted. */
+ /* Start nanosleep to be interrupted. */
+ timeout.tv_sec = 1;
errno = 0;
- EXPECT_EQ(1, poll(&fds, 1, -1)) {
- TH_LOG("Call to poll() failed (errno %d)", errno);
+ EXPECT_EQ(0, nanosleep(&timeout, NULL)) {
+ TH_LOG("Call to nanosleep() failed (errno %d)", errno);
}

/* Read final sync from parent. */
@@ -2082,14 +2124,14 @@ TEST(syscall_restart)
ASSERT_EQ(0, ptrace(PTRACE_CONT, child_pid, NULL, 0));
ASSERT_EQ(1, write(pipefd[1], ".", 1));

- /* Wait for poll() to start. */
+ /* Wait for nanosleep() to start. */
ASSERT_EQ(child_pid, waitpid(child_pid, &status, 0));
ASSERT_EQ(true, WIFSTOPPED(status));
ASSERT_EQ(SIGTRAP, WSTOPSIG(status));
ASSERT_EQ(PTRACE_EVENT_SECCOMP, (status >> 16));
ASSERT_EQ(0, ptrace(PTRACE_GETEVENTMSG, child_pid, NULL, &msg));
ASSERT_EQ(0x100, msg);
- EXPECT_EQ(__NR_poll, get_syscall(_metadata, child_pid));
+ EXPECT_EQ(__NR_nanosleep, get_syscall(_metadata, child_pid));

/* Might as well check siginfo for sanity while we're here. */
ASSERT_EQ(0, ptrace(PTRACE_GETSIGINFO, child_pid, NULL, &info));
@@ -2100,7 +2142,7 @@ TEST(syscall_restart)
/* Verify signal delivery came from child (seccomp-triggered). */
EXPECT_EQ(child_pid, info.si_pid);

- /* Interrupt poll with SIGSTOP (which we'll need to handle). */
+ /* Interrupt nanosleep with SIGSTOP (which we'll need to handle). */
ASSERT_EQ(0, kill(child_pid, SIGSTOP));
ASSERT_EQ(0, ptrace(PTRACE_CONT, child_pid, NULL, 0));
ASSERT_EQ(child_pid, waitpid(child_pid, &status, 0));
@@ -2110,7 +2152,7 @@ TEST(syscall_restart)
ASSERT_EQ(0, ptrace(PTRACE_GETSIGINFO, child_pid, NULL, &info));
EXPECT_EQ(getpid(), info.si_pid);

- /* Restart poll with SIGCONT, which triggers restart_syscall. */
+ /* Restart nanosleep with SIGCONT, which triggers restart_syscall. */
ASSERT_EQ(0, kill(child_pid, SIGCONT));
ASSERT_EQ(0, ptrace(PTRACE_CONT, child_pid, NULL, 0));
ASSERT_EQ(child_pid, waitpid(child_pid, &status, 0));
@@ -2124,16 +2166,25 @@ TEST(syscall_restart)
ASSERT_EQ(SIGTRAP, WSTOPSIG(status));
ASSERT_EQ(PTRACE_EVENT_SECCOMP, (status >> 16));
ASSERT_EQ(0, ptrace(PTRACE_GETEVENTMSG, child_pid, NULL, &msg));
+
ASSERT_EQ(0x200, msg);
ret = get_syscall(_metadata, child_pid);
#if defined(__arm__)
- /* FIXME: ARM does not expose true syscall in registers. */
- EXPECT_EQ(__NR_poll, ret);
-#else
- EXPECT_EQ(__NR_restart_syscall, ret);
+ /*
+ * FIXME:
+ * - native ARM registers do NOT expose true syscall.
+ * - compat ARM registers on ARM64 DO expose true syscall.
+ */
+ ASSERT_EQ(0, uname(&utsbuf));
+ if (strncmp(utsbuf.machine, "arm", 3) == 0) {
+ EXPECT_EQ(__NR_nanosleep, ret);
+ } else
#endif
+ {
+ EXPECT_EQ(__NR_restart_syscall, ret);
+ }

- /* Write again to end poll. */
+ /* Write again to end test. */
ASSERT_EQ(0, ptrace(PTRACE_CONT, child_pid, NULL, 0));
ASSERT_EQ(1, write(pipefd[1], "!", 1));
EXPECT_EQ(0, close(pipefd[1]));
diff --git a/tools/testing/selftests/static_keys/test_static_keys.sh b/tools/testing/selftests/static_keys/test_static_keys.sh
old mode 100644
new mode 100755
diff --git a/tools/testing/selftests/timers/nanosleep.c b/tools/testing/selftests/timers/nanosleep.c
index 8a3c29d..ff942ff 100644
--- a/tools/testing/selftests/timers/nanosleep.c
+++ b/tools/testing/selftests/timers/nanosleep.c
@@ -19,6 +19,7 @@
* GNU General Public License for more details.
*/

+#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
diff --git a/tools/testing/selftests/vm/run_vmtests b/tools/testing/selftests/vm/run_vmtests
index 9179ce8..97ed1b2 100755
--- a/tools/testing/selftests/vm/run_vmtests
+++ b/tools/testing/selftests/vm/run_vmtests
@@ -20,13 +20,26 @@ done < /proc/meminfo
if [ -n "$freepgs" ] && [ -n "$pgsize" ]; then
nr_hugepgs=`cat /proc/sys/vm/nr_hugepages`
needpgs=`expr $needmem / $pgsize`
- if [ $freepgs -lt $needpgs ]; then
+ tries=2
+ while [ $tries -gt 0 ] && [ $freepgs -lt $needpgs ]; do
lackpgs=$(( $needpgs - $freepgs ))
+ echo 3 > /proc/sys/vm/drop_caches
echo $(( $lackpgs + $nr_hugepgs )) > /proc/sys/vm/nr_hugepages
if [ $? -ne 0 ]; then
echo "Please run this test as root"
exit 1
fi
+ while read name size unit; do
+ if [ "$name" = "HugePages_Free:" ]; then
+ freepgs=$size
+ fi
+ done < /proc/meminfo
+ tries=$((tries - 1))
+ done
+ if [ $freepgs -lt $needpgs ]; then
+ printf "Not enough huge pages available (%d < %d)\n" \
+ $freepgs $needpgs
+ exit 1
fi
else
echo "no hugetlbfs support in kernel?"