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linux-kselftest-5.0-rc5

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This Kselftest update for Linux 5.0-rc5 consists of run-time fixes to
 cpu-hotplug, and seccomp tests, compile fixes to ir, net, and timers
 Makefiles.
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Merge tag 'linux-kselftest-5.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This consists of run-time fixes to cpu-hotplug, and seccomp tests,
  compile fixes to ir, net, and timers Makefiles"

* tag 'linux-kselftest-5.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: timers: use LDLIBS instead of LDFLAGS
  selftests: net: use LDLIBS instead of LDFLAGS
  selftests/seccomp: Enhance per-arch ptrace syscall skip tests
  selftests: Use lirc.h from kernel tree, not from system
  selftests: cpu-hotplug: fix case where CPUs offline > CPUs present
This commit is contained in:
Linus Torvalds 2019-01-31 11:11:18 -08:00
commit 9f78956714
5 changed files with 71 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh
View File

@ -37,6 +37,10 @@ prerequisite()
exit $ksft_skip
fi
present_cpus=`cat $SYSFS/devices/system/cpu/present`
present_max=${present_cpus##*-}
echo "present_cpus = $present_cpus present_max = $present_max"
echo -e "\t Cpus in online state: $online_cpus"
offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
@ -151,6 +155,8 @@ online_cpus=0
online_max=0
offline_cpus=0
offline_max=0
present_cpus=0
present_max=0
while getopts e:ahp: opt; do
case $opt in
@ -190,9 +196,10 @@ if [ $allcpus -eq 0 ]; then
online_cpu_expect_success $online_max
if [[ $offline_cpus -gt 0 ]]; then
echo -e "\t offline to online to offline: cpu $offline_max"
online_cpu_expect_success $offline_max
offline_cpu_expect_success $offline_max
echo -e "\t offline to online to offline: cpu $present_max"
online_cpu_expect_success $present_max
offline_cpu_expect_success $present_max
online_cpu $present_max
fi
exit 0
else

2
tools/testing/selftests/ir/Makefile
View File

@ -1,5 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
TEST_PROGS := ir_loopback.sh
TEST_GEN_PROGS_EXTENDED := ir_loopback
APIDIR := ../../../include/uapi
CFLAGS += -Wall -O2 -I$(APIDIR)
include ../lib.mk

2
tools/testing/selftests/net/Makefile
View File

@ -21,6 +21,6 @@ TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls
KSFT_KHDR_INSTALL := 1
include ../lib.mk
$(OUTPUT)/reuseport_bpf_numa: LDFLAGS += -lnuma
$(OUTPUT)/reuseport_bpf_numa: LDLIBS += -lnuma
$(OUTPUT)/tcp_mmap: LDFLAGS += -lpthread
$(OUTPUT)/tcp_inq: LDFLAGS += -lpthread

72
tools/testing/selftests/seccomp/seccomp_bpf.c
View File

@ -1608,7 +1608,16 @@ TEST_F(TRACE_poke, getpid_runs_normally)
#ifdef SYSCALL_NUM_RET_SHARE_REG
# define EXPECT_SYSCALL_RETURN(val, action) EXPECT_EQ(-1, action)
#else
# define EXPECT_SYSCALL_RETURN(val, action) EXPECT_EQ(val, action)
# define EXPECT_SYSCALL_RETURN(val, action) \
do { \
errno = 0; \
if (val < 0) { \
EXPECT_EQ(-1, action); \
EXPECT_EQ(-(val), errno); \
} else { \
EXPECT_EQ(val, action); \
} \
} while (0)
#endif
/* Use PTRACE_GETREGS and PTRACE_SETREGS when available. This is useful for
@ -1647,7 +1656,7 @@ int get_syscall(struct __test_metadata *_metadata, pid_t tracee)
/* Architecture-specific syscall changing routine. */
void change_syscall(struct __test_metadata *_metadata,
pid_t tracee, int syscall)
pid_t tracee, int syscall, int result)
{
int ret;
ARCH_REGS regs;
@ -1706,7 +1715,7 @@ void change_syscall(struct __test_metadata *_metadata,
#ifdef SYSCALL_NUM_RET_SHARE_REG
TH_LOG("Can't modify syscall return on this architecture");
#else
regs.SYSCALL_RET = EPERM;
regs.SYSCALL_RET = result;
#endif
#ifdef HAVE_GETREGS
@ -1734,14 +1743,19 @@ void tracer_syscall(struct __test_metadata *_metadata, pid_t tracee,
case 0x1002:
/* change getpid to getppid. */
EXPECT_EQ(__NR_getpid, get_syscall(_metadata, tracee));
change_syscall(_metadata, tracee, __NR_getppid);
change_syscall(_metadata, tracee, __NR_getppid, 0);
break;
case 0x1003:
/* skip gettid. */
/* skip gettid with valid return code. */
EXPECT_EQ(__NR_gettid, get_syscall(_metadata, tracee));
change_syscall(_metadata, tracee, -1);
change_syscall(_metadata, tracee, -1, 45000);
break;
case 0x1004:
/* skip openat with error. */
EXPECT_EQ(__NR_openat, get_syscall(_metadata, tracee));
change_syscall(_metadata, tracee, -1, -ESRCH);
break;
case 0x1005:
/* do nothing (allow getppid) */
EXPECT_EQ(__NR_getppid, get_syscall(_metadata, tracee));
break;
@ -1774,9 +1788,11 @@ void tracer_ptrace(struct __test_metadata *_metadata, pid_t tracee,
nr = get_syscall(_metadata, tracee);
if (nr == __NR_getpid)
change_syscall(_metadata, tracee, __NR_getppid);
change_syscall(_metadata, tracee, __NR_getppid, 0);
if (nr == __NR_gettid)
change_syscall(_metadata, tracee, -1, 45000);
if (nr == __NR_openat)
change_syscall(_metadata, tracee, -1);
change_syscall(_metadata, tracee, -1, -ESRCH);
}
FIXTURE_DATA(TRACE_syscall) {
@ -1793,8 +1809,10 @@ FIXTURE_SETUP(TRACE_syscall)
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE | 0x1002),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_gettid, 0, 1),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE | 0x1003),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_getppid, 0, 1),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_openat, 0, 1),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE | 0x1004),
BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __NR_getppid, 0, 1),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_TRACE | 0x1005),
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_ALLOW),
};
@ -1842,15 +1860,26 @@ TEST_F(TRACE_syscall, ptrace_syscall_redirected)
EXPECT_NE(self->mypid, syscall(__NR_getpid));
}
TEST_F(TRACE_syscall, ptrace_syscall_dropped)
TEST_F(TRACE_syscall, ptrace_syscall_errno)
{
/* Swap SECCOMP_RET_TRACE tracer for PTRACE_SYSCALL tracer. */
teardown_trace_fixture(_metadata, self->tracer);
self->tracer = setup_trace_fixture(_metadata, tracer_ptrace, NULL,
true);
/* Tracer should skip the open syscall, resulting in EPERM. */
EXPECT_SYSCALL_RETURN(EPERM, syscall(__NR_openat));
/* Tracer should skip the open syscall, resulting in ESRCH. */
EXPECT_SYSCALL_RETURN(-ESRCH, syscall(__NR_openat));
}
TEST_F(TRACE_syscall, ptrace_syscall_faked)
{
/* Swap SECCOMP_RET_TRACE tracer for PTRACE_SYSCALL tracer. */
teardown_trace_fixture(_metadata, self->tracer);
self->tracer = setup_trace_fixture(_metadata, tracer_ptrace, NULL,
true);
/* Tracer should skip the gettid syscall, resulting fake pid. */
EXPECT_SYSCALL_RETURN(45000, syscall(__NR_gettid));
}
TEST_F(TRACE_syscall, syscall_allowed)
@ -1883,7 +1912,21 @@ TEST_F(TRACE_syscall, syscall_redirected)
EXPECT_NE(self->mypid, syscall(__NR_getpid));
}
TEST_F(TRACE_syscall, syscall_dropped)
TEST_F(TRACE_syscall, syscall_errno)
{
long ret;
ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
ASSERT_EQ(0, ret);
ret = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &self->prog, 0, 0);
ASSERT_EQ(0, ret);
/* openat has been skipped and an errno return. */
EXPECT_SYSCALL_RETURN(-ESRCH, syscall(__NR_openat));
}
TEST_F(TRACE_syscall, syscall_faked)
{
long ret;
@ -1894,8 +1937,7 @@ TEST_F(TRACE_syscall, syscall_dropped)
ASSERT_EQ(0, ret);
/* gettid has been skipped and an altered return value stored. */
EXPECT_SYSCALL_RETURN(EPERM, syscall(__NR_gettid));
EXPECT_NE(self->mytid, syscall(__NR_gettid));
EXPECT_SYSCALL_RETURN(45000, syscall(__NR_gettid));
}
TEST_F(TRACE_syscall, skip_after_RET_TRACE)

2
tools/testing/selftests/timers/Makefile
View File

@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
CFLAGS += -O3 -Wl,-no-as-needed -Wall
LDFLAGS += -lrt -lpthread -lm
LDLIBS += -lrt -lpthread -lm
# these are all "safe" tests that don't modify
# system time or require escalated privileges