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-rw-r--r--tools/testing/kunit/qemu_configs/riscv.py18
-rw-r--r--tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc2
-rwxr-xr-xtools/testing/selftests/memory-hotplug/mem-on-off-test.sh34
-rwxr-xr-xtools/testing/selftests/net/fib_nexthops.sh5
-rw-r--r--tools/testing/selftests/netfilter/Makefile2
-rwxr-xr-xtools/testing/selftests/netfilter/nft_fib.sh1
-rwxr-xr-xtools/testing/selftests/netfilter/rpath.sh147
-rw-r--r--tools/testing/selftests/proc/.gitignore1
-rw-r--r--tools/testing/selftests/proc/Makefile1
-rw-r--r--tools/testing/selftests/proc/proc-empty-vm.c386
-rw-r--r--tools/testing/selftests/proc/proc-pid-vm.c56
11 files changed, 593 insertions, 60 deletions
diff --git a/tools/testing/kunit/qemu_configs/riscv.py b/tools/testing/kunit/qemu_configs/riscv.py
index 6207be146d26..12a1d525978a 100644
--- a/tools/testing/kunit/qemu_configs/riscv.py
+++ b/tools/testing/kunit/qemu_configs/riscv.py
@@ -3,17 +3,13 @@ import os
import os.path
import sys
-GITHUB_OPENSBI_URL = 'https://github.com/qemu/qemu/raw/master/pc-bios/opensbi-riscv64-generic-fw_dynamic.bin'
-OPENSBI_FILE = os.path.basename(GITHUB_OPENSBI_URL)
+OPENSBI_FILE = 'opensbi-riscv64-generic-fw_dynamic.bin'
+OPENSBI_PATH = '/usr/share/qemu/' + OPENSBI_FILE
-if not os.path.isfile(OPENSBI_FILE):
- print('\n\nOpenSBI file is not in the current working directory.\n'
- 'Would you like me to download it for you from:\n' + GITHUB_OPENSBI_URL + ' ?\n')
- response = input('yes/[no]: ')
- if response.strip() == 'yes':
- os.system('wget ' + GITHUB_OPENSBI_URL)
- else:
- sys.exit()
+if not os.path.isfile(OPENSBI_PATH):
+ print('\n\nOpenSBI bios was not found in "' + OPENSBI_PATH + '".\n'
+ 'Please ensure that qemu-system-riscv is installed, or edit the path in "qemu_configs/riscv.py"\n')
+ sys.exit()
QEMU_ARCH = QemuArchParams(linux_arch='riscv',
kconfig='''
@@ -29,4 +25,4 @@ CONFIG_SERIAL_EARLYCON_RISCV_SBI=y''',
extra_qemu_params=[
'-machine', 'virt',
'-cpu', 'rv64',
- '-bios', 'opensbi-riscv64-generic-fw_dynamic.bin'])
+ '-bios', OPENSBI_PATH])
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
index 3145b0f1835c..8d26d5505808 100644
--- a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
@@ -85,7 +85,7 @@ run_enable_disable() {
echo $check_disable > $EVENT_ENABLE
done
sleep $SLEEP_TIME
- echo " make sure it's still works"
+ echo " make sure it still works"
test_event_enabled $check_enable_star
reset_ftrace_filter
diff --git a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
index 46a97f318f58..74ee5067a8ce 100755
--- a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
+++ b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
@@ -134,6 +134,16 @@ offline_memory_expect_fail()
return 0
}
+online_all_offline_memory()
+{
+ for memory in `hotpluggable_offline_memory`; do
+ if ! online_memory_expect_success $memory; then
+ echo "$FUNCNAME $memory: unexpected fail" >&2
+ retval=1
+ fi
+ done
+}
+
error=-12
priority=0
# Run with default of ratio=2 for Kselftest run
@@ -197,8 +207,11 @@ echo -e "\t trying to offline $target out of $hotpluggable_num memory block(s):"
for memory in `hotpluggable_online_memory`; do
if [ "$target" -gt 0 ]; then
echo "online->offline memory$memory"
- if offline_memory_expect_success $memory; then
+ if offline_memory_expect_success $memory &>/dev/null; then
target=$(($target - 1))
+ echo "-> Success"
+ else
+ echo "-> Failure"
fi
fi
done
@@ -257,7 +270,7 @@ prerequisite_extra
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
for memory in `hotpluggable_online_memory`; do
if [ $((RANDOM % 100)) -lt $ratio ]; then
- offline_memory_expect_success $memory
+ offline_memory_expect_success $memory &>/dev/null
fi
done
@@ -266,16 +279,16 @@ done
#
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
for memory in `hotpluggable_offline_memory`; do
- online_memory_expect_fail $memory
+ if ! online_memory_expect_fail $memory; then
+ retval=1
+ fi
done
#
# Online all hot-pluggable memory
#
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
-for memory in `hotpluggable_offline_memory`; do
- online_memory_expect_success $memory
-done
+online_all_offline_memory
#
# Test memory hot-remove error handling (online => offline)
@@ -283,11 +296,18 @@ done
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
for memory in `hotpluggable_online_memory`; do
if [ $((RANDOM % 100)) -lt $ratio ]; then
- offline_memory_expect_fail $memory
+ if ! offline_memory_expect_fail $memory; then
+ retval=1
+ fi
fi
done
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
/sbin/modprobe -q -r memory-notifier-error-inject
+#
+# Restore memory before exit
+#
+online_all_offline_memory
+
exit $retval
diff --git a/tools/testing/selftests/net/fib_nexthops.sh b/tools/testing/selftests/net/fib_nexthops.sh
index d5a0dd548989..ee5e98204d3d 100755
--- a/tools/testing/selftests/net/fib_nexthops.sh
+++ b/tools/testing/selftests/net/fib_nexthops.sh
@@ -1223,6 +1223,11 @@ ipv4_fcnal()
log_test $rc 0 "Delete nexthop route warning"
run_cmd "$IP route delete 172.16.101.1/32 nhid 12"
run_cmd "$IP nexthop del id 12"
+
+ run_cmd "$IP nexthop add id 21 via 172.16.1.6 dev veth1"
+ run_cmd "$IP ro add 172.16.101.0/24 nhid 21"
+ run_cmd "$IP ro del 172.16.101.0/24 nexthop via 172.16.1.7 dev veth1 nexthop via 172.16.1.8 dev veth1"
+ log_test $? 2 "Delete multipath route with only nh id based entry"
}
ipv4_grp_fcnal()
diff --git a/tools/testing/selftests/netfilter/Makefile b/tools/testing/selftests/netfilter/Makefile
index 600e3a19d5e2..4504ee07be08 100644
--- a/tools/testing/selftests/netfilter/Makefile
+++ b/tools/testing/selftests/netfilter/Makefile
@@ -6,7 +6,7 @@ TEST_PROGS := nft_trans_stress.sh nft_fib.sh nft_nat.sh bridge_brouter.sh \
nft_concat_range.sh nft_conntrack_helper.sh \
nft_queue.sh nft_meta.sh nf_nat_edemux.sh \
ipip-conntrack-mtu.sh conntrack_tcp_unreplied.sh \
- conntrack_vrf.sh nft_synproxy.sh
+ conntrack_vrf.sh nft_synproxy.sh rpath.sh
CFLAGS += $(shell pkg-config --cflags libmnl 2>/dev/null || echo "-I/usr/include/libmnl")
LDLIBS = -lmnl
diff --git a/tools/testing/selftests/netfilter/nft_fib.sh b/tools/testing/selftests/netfilter/nft_fib.sh
index fd76b69635a4..dff476e45e77 100755
--- a/tools/testing/selftests/netfilter/nft_fib.sh
+++ b/tools/testing/selftests/netfilter/nft_fib.sh
@@ -188,6 +188,7 @@ test_ping() {
ip netns exec ${nsrouter} sysctl net.ipv6.conf.all.forwarding=1 > /dev/null
ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth0.forwarding=1 > /dev/null
ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth1.forwarding=1 > /dev/null
+ip netns exec ${nsrouter} sysctl net.ipv4.conf.all.rp_filter=0 > /dev/null
ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth0.rp_filter=0 > /dev/null
sleep 3
diff --git a/tools/testing/selftests/netfilter/rpath.sh b/tools/testing/selftests/netfilter/rpath.sh
new file mode 100755
index 000000000000..2d8da7bd8ab7
--- /dev/null
+++ b/tools/testing/selftests/netfilter/rpath.sh
@@ -0,0 +1,147 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# return code to signal skipped test
+ksft_skip=4
+
+# search for legacy iptables (it uses the xtables extensions
+if iptables-legacy --version >/dev/null 2>&1; then
+ iptables='iptables-legacy'
+elif iptables --version >/dev/null 2>&1; then
+ iptables='iptables'
+else
+ iptables=''
+fi
+
+if ip6tables-legacy --version >/dev/null 2>&1; then
+ ip6tables='ip6tables-legacy'
+elif ! ip6tables --version >/dev/null 2>&1; then
+ ip6tables='ip6tables'
+else
+ ip6tables=''
+fi
+
+if nft --version >/dev/null 2>&1; then
+ nft='nft'
+else
+ nft=''
+fi
+
+if [ -z "$iptables$ip6tables$nft" ]; then
+ echo "SKIP: Test needs iptables, ip6tables or nft"
+ exit $ksft_skip
+fi
+
+sfx=$(mktemp -u "XXXXXXXX")
+ns1="ns1-$sfx"
+ns2="ns2-$sfx"
+trap "ip netns del $ns1; ip netns del $ns2" EXIT
+
+# create two netns, disable rp_filter in ns2 and
+# keep IPv6 address when moving into VRF
+ip netns add "$ns1"
+ip netns add "$ns2"
+ip netns exec "$ns2" sysctl -q net.ipv4.conf.all.rp_filter=0
+ip netns exec "$ns2" sysctl -q net.ipv4.conf.default.rp_filter=0
+ip netns exec "$ns2" sysctl -q net.ipv6.conf.all.keep_addr_on_down=1
+
+# a standard connection between the netns, should not trigger rp filter
+ip -net "$ns1" link add v0 type veth peer name v0 netns "$ns2"
+ip -net "$ns1" link set v0 up; ip -net "$ns2" link set v0 up
+ip -net "$ns1" a a 192.168.23.2/24 dev v0
+ip -net "$ns2" a a 192.168.23.1/24 dev v0
+ip -net "$ns1" a a fec0:23::2/64 dev v0 nodad
+ip -net "$ns2" a a fec0:23::1/64 dev v0 nodad
+
+# rp filter testing: ns1 sends packets via v0 which ns2 would route back via d0
+ip -net "$ns2" link add d0 type dummy
+ip -net "$ns2" link set d0 up
+ip -net "$ns1" a a 192.168.42.2/24 dev v0
+ip -net "$ns2" a a 192.168.42.1/24 dev d0
+ip -net "$ns1" a a fec0:42::2/64 dev v0 nodad
+ip -net "$ns2" a a fec0:42::1/64 dev d0 nodad
+
+# firewall matches to test
+ip netns exec "$ns2" "$iptables" -t raw -A PREROUTING -s 192.168.0.0/16 -m rpfilter
+ip netns exec "$ns2" "$ip6tables" -t raw -A PREROUTING -s fec0::/16 -m rpfilter
+ip netns exec "$ns2" nft -f - <<EOF
+table inet t {
+ chain c {
+ type filter hook prerouting priority raw;
+ ip saddr 192.168.0.0/16 fib saddr . iif oif exists counter
+ ip6 saddr fec0::/16 fib saddr . iif oif exists counter
+ }
+}
+EOF
+
+die() {
+ echo "FAIL: $*"
+ #ip netns exec "$ns2" "$iptables" -t raw -vS
+ #ip netns exec "$ns2" "$ip6tables" -t raw -vS
+ #ip netns exec "$ns2" nft list ruleset
+ exit 1
+}
+
+# check rule counters, return true if rule did not match
+ipt_zero_rule() { # (command)
+ [ -n "$1" ] || return 0
+ ip netns exec "$ns2" "$1" -t raw -vS | grep -q -- "-m rpfilter -c 0 0"
+}
+nft_zero_rule() { # (family)
+ [ -n "$nft" ] || return 0
+ ip netns exec "$ns2" "$nft" list chain inet t c | \
+ grep -q "$1 saddr .* counter packets 0 bytes 0"
+}
+
+netns_ping() { # (netns, args...)
+ local netns="$1"
+ shift
+ ip netns exec "$netns" ping -q -c 1 -W 1 "$@" >/dev/null
+}
+
+testrun() {
+ # clear counters first
+ [ -n "$iptables" ] && ip netns exec "$ns2" "$iptables" -t raw -Z
+ [ -n "$ip6tables" ] && ip netns exec "$ns2" "$ip6tables" -t raw -Z
+ if [ -n "$nft" ]; then
+ (
+ echo "delete table inet t";
+ ip netns exec "$ns2" nft -s list table inet t;
+ ) | ip netns exec "$ns2" nft -f -
+ fi
+
+ # test 1: martian traffic should fail rpfilter matches
+ netns_ping "$ns1" -I v0 192.168.42.1 && \
+ die "martian ping 192.168.42.1 succeeded"
+ netns_ping "$ns1" -I v0 fec0:42::1 && \
+ die "martian ping fec0:42::1 succeeded"
+
+ ipt_zero_rule "$iptables" || die "iptables matched martian"
+ ipt_zero_rule "$ip6tables" || die "ip6tables matched martian"
+ nft_zero_rule ip || die "nft IPv4 matched martian"
+ nft_zero_rule ip6 || die "nft IPv6 matched martian"
+
+ # test 2: rpfilter match should pass for regular traffic
+ netns_ping "$ns1" 192.168.23.1 || \
+ die "regular ping 192.168.23.1 failed"
+ netns_ping "$ns1" fec0:23::1 || \
+ die "regular ping fec0:23::1 failed"
+
+ ipt_zero_rule "$iptables" && die "iptables match not effective"
+ ipt_zero_rule "$ip6tables" && die "ip6tables match not effective"
+ nft_zero_rule ip && die "nft IPv4 match not effective"
+ nft_zero_rule ip6 && die "nft IPv6 match not effective"
+
+}
+
+testrun
+
+# repeat test with vrf device in $ns2
+ip -net "$ns2" link add vrf0 type vrf table 10
+ip -net "$ns2" link set vrf0 up
+ip -net "$ns2" link set v0 master vrf0
+
+testrun
+
+echo "PASS: netfilter reverse path match works as intended"
+exit 0
diff --git a/tools/testing/selftests/proc/.gitignore b/tools/testing/selftests/proc/.gitignore
index c4e6a34f9657..a156ac5dd2c6 100644
--- a/tools/testing/selftests/proc/.gitignore
+++ b/tools/testing/selftests/proc/.gitignore
@@ -5,6 +5,7 @@
/proc-fsconfig-hidepid
/proc-loadavg-001
/proc-multiple-procfs
+/proc-empty-vm
/proc-pid-vm
/proc-self-map-files-001
/proc-self-map-files-002
diff --git a/tools/testing/selftests/proc/Makefile b/tools/testing/selftests/proc/Makefile
index 219fc6113847..cd95369254c0 100644
--- a/tools/testing/selftests/proc/Makefile
+++ b/tools/testing/selftests/proc/Makefile
@@ -8,6 +8,7 @@ TEST_GEN_PROGS += fd-001-lookup
TEST_GEN_PROGS += fd-002-posix-eq
TEST_GEN_PROGS += fd-003-kthread
TEST_GEN_PROGS += proc-loadavg-001
+TEST_GEN_PROGS += proc-empty-vm
TEST_GEN_PROGS += proc-pid-vm
TEST_GEN_PROGS += proc-self-map-files-001
TEST_GEN_PROGS += proc-self-map-files-002
diff --git a/tools/testing/selftests/proc/proc-empty-vm.c b/tools/testing/selftests/proc/proc-empty-vm.c
new file mode 100644
index 000000000000..d95b1cb43d9d
--- /dev/null
+++ b/tools/testing/selftests/proc/proc-empty-vm.c
@@ -0,0 +1,386 @@
+/*
+ * Copyright (c) 2022 Alexey Dobriyan <adobriyan@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+/*
+ * Create a process without mappings by unmapping everything at once and
+ * holding it with ptrace(2). See what happens to
+ *
+ * /proc/${pid}/maps
+ * /proc/${pid}/numa_maps
+ * /proc/${pid}/smaps
+ * /proc/${pid}/smaps_rollup
+ */
+#undef NDEBUG
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+/*
+ * 0: vsyscall VMA doesn't exist vsyscall=none
+ * 1: vsyscall VMA is --xp vsyscall=xonly
+ * 2: vsyscall VMA is r-xp vsyscall=emulate
+ */
+static int g_vsyscall;
+static const char *g_proc_pid_maps_vsyscall;
+static const char *g_proc_pid_smaps_vsyscall;
+
+static const char proc_pid_maps_vsyscall_0[] = "";
+static const char proc_pid_maps_vsyscall_1[] =
+"ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]\n";
+static const char proc_pid_maps_vsyscall_2[] =
+"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n";
+
+static const char proc_pid_smaps_vsyscall_0[] = "";
+
+static const char proc_pid_smaps_vsyscall_1[] =
+"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n"
+"Size: 4 kB\n"
+"KernelPageSize: 4 kB\n"
+"MMUPageSize: 4 kB\n"
+"Rss: 0 kB\n"
+"Pss: 0 kB\n"
+"Pss_Dirty: 0 kB\n"
+"Shared_Clean: 0 kB\n"
+"Shared_Dirty: 0 kB\n"
+"Private_Clean: 0 kB\n"
+"Private_Dirty: 0 kB\n"
+"Referenced: 0 kB\n"
+"Anonymous: 0 kB\n"
+"LazyFree: 0 kB\n"
+"AnonHugePages: 0 kB\n"
+"ShmemPmdMapped: 0 kB\n"
+"FilePmdMapped: 0 kB\n"
+"Shared_Hugetlb: 0 kB\n"
+"Private_Hugetlb: 0 kB\n"
+"Swap: 0 kB\n"
+"SwapPss: 0 kB\n"
+"Locked: 0 kB\n"
+"THPeligible: 0\n"
+/*
+ * "ProtectionKey:" field is conditional. It is possible to check it as well,
+ * but I don't have such machine.
+ */
+;
+
+static const char proc_pid_smaps_vsyscall_2[] =
+"ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]\n"
+"Size: 4 kB\n"
+"KernelPageSize: 4 kB\n"
+"MMUPageSize: 4 kB\n"
+"Rss: 0 kB\n"
+"Pss: 0 kB\n"
+"Pss_Dirty: 0 kB\n"
+"Shared_Clean: 0 kB\n"
+"Shared_Dirty: 0 kB\n"
+"Private_Clean: 0 kB\n"
+"Private_Dirty: 0 kB\n"
+"Referenced: 0 kB\n"
+"Anonymous: 0 kB\n"
+"LazyFree: 0 kB\n"
+"AnonHugePages: 0 kB\n"
+"ShmemPmdMapped: 0 kB\n"
+"FilePmdMapped: 0 kB\n"
+"Shared_Hugetlb: 0 kB\n"
+"Private_Hugetlb: 0 kB\n"
+"Swap: 0 kB\n"
+"SwapPss: 0 kB\n"
+"Locked: 0 kB\n"
+"THPeligible: 0\n"
+/*
+ * "ProtectionKey:" field is conditional. It is possible to check it as well,
+ * but I'm too tired.
+ */
+;
+
+static void sigaction_SIGSEGV(int _, siginfo_t *__, void *___)
+{
+ _exit(EXIT_FAILURE);
+}
+
+static void sigaction_SIGSEGV_vsyscall(int _, siginfo_t *__, void *___)
+{
+ _exit(g_vsyscall);
+}
+
+/*
+ * vsyscall page can't be unmapped, probe it directly.
+ */
+static void vsyscall(void)
+{
+ pid_t pid;
+ int wstatus;
+
+ pid = fork();
+ if (pid < 0) {
+ fprintf(stderr, "fork, errno %d\n", errno);
+ exit(1);
+ }
+ if (pid == 0) {
+ setrlimit(RLIMIT_CORE, &(struct rlimit){});
+
+ /* Hide "segfault at ffffffffff600000" messages. */
+ struct sigaction act = {};
+ act.sa_flags = SA_SIGINFO;
+ act.sa_sigaction = sigaction_SIGSEGV_vsyscall;
+ sigaction(SIGSEGV, &act, NULL);
+
+ g_vsyscall = 0;
+ /* gettimeofday(NULL, NULL); */
+ asm volatile (
+ "call %P0"
+ :
+ : "i" (0xffffffffff600000), "D" (NULL), "S" (NULL)
+ : "rax", "rcx", "r11"
+ );
+
+ g_vsyscall = 1;
+ *(volatile int *)0xffffffffff600000UL;
+
+ g_vsyscall = 2;
+ exit(g_vsyscall);
+ }
+ waitpid(pid, &wstatus, 0);
+ if (WIFEXITED(wstatus)) {
+ g_vsyscall = WEXITSTATUS(wstatus);
+ } else {
+ fprintf(stderr, "error: vsyscall wstatus %08x\n", wstatus);
+ exit(1);
+ }
+}
+
+static int test_proc_pid_maps(pid_t pid)
+{
+ char buf[4096];
+ snprintf(buf, sizeof(buf), "/proc/%u/maps", pid);
+ int fd = open(buf, O_RDONLY);
+ if (fd == -1) {
+ perror("open /proc/${pid}/maps");
+ return EXIT_FAILURE;
+ } else {
+ ssize_t rv = read(fd, buf, sizeof(buf));
+ close(fd);
+ if (g_vsyscall == 0) {
+ assert(rv == 0);
+ } else {
+ size_t len = strlen(g_proc_pid_maps_vsyscall);
+ assert(rv == len);
+ assert(memcmp(buf, g_proc_pid_maps_vsyscall, len) == 0);
+ }
+ return EXIT_SUCCESS;
+ }
+}
+
+static int test_proc_pid_numa_maps(pid_t pid)
+{
+ char buf[4096];
+ snprintf(buf, sizeof(buf), "/proc/%u/numa_maps", pid);
+ int fd = open(buf, O_RDONLY);
+ if (fd == -1) {
+ if (errno == ENOENT) {
+ /*
+ * /proc/${pid}/numa_maps is under CONFIG_NUMA,
+ * it doesn't necessarily exist.
+ */
+ return EXIT_SUCCESS;
+ }
+ perror("open /proc/${pid}/numa_maps");
+ return EXIT_FAILURE;
+ } else {
+ ssize_t rv = read(fd, buf, sizeof(buf));
+ close(fd);
+ assert(rv == 0);
+ return EXIT_SUCCESS;
+ }
+}
+
+static int test_proc_pid_smaps(pid_t pid)
+{
+ char buf[4096];
+ snprintf(buf, sizeof(buf), "/proc/%u/smaps", pid);
+ int fd = open(buf, O_RDONLY);
+ if (fd == -1) {
+ if (errno == ENOENT) {
+ /*
+ * /proc/${pid}/smaps is under CONFIG_PROC_PAGE_MONITOR,
+ * it doesn't necessarily exist.
+ */
+ return EXIT_SUCCESS;
+ }
+ perror("open /proc/${pid}/smaps");
+ return EXIT_FAILURE;
+ } else {
+ ssize_t rv = read(fd, buf, sizeof(buf));
+ close(fd);
+ if (g_vsyscall == 0) {
+ assert(rv == 0);
+ } else {
+ size_t len = strlen(g_proc_pid_maps_vsyscall);
+ /* TODO "ProtectionKey:" */
+ assert(rv > len);
+ assert(memcmp(buf, g_proc_pid_maps_vsyscall, len) == 0);
+ }
+ return EXIT_SUCCESS;
+ }
+}
+
+static const char g_smaps_rollup[] =
+"00000000-00000000 ---p 00000000 00:00 0 [rollup]\n"
+"Rss: 0 kB\n"
+"Pss: 0 kB\n"
+"Pss_Dirty: 0 kB\n"
+"Pss_Anon: 0 kB\n"
+"Pss_File: 0 kB\n"
+"Pss_Shmem: 0 kB\n"
+"Shared_Clean: 0 kB\n"
+"Shared_Dirty: 0 kB\n"
+"Private_Clean: 0 kB\n"
+"Private_Dirty: 0 kB\n"
+"Referenced: 0 kB\n"
+"Anonymous: 0 kB\n"
+"LazyFree: 0 kB\n"
+"AnonHugePages: 0 kB\n"
+"ShmemPmdMapped: 0 kB\n"
+"FilePmdMapped: 0 kB\n"
+"Shared_Hugetlb: 0 kB\n"
+"Private_Hugetlb: 0 kB\n"
+"Swap: 0 kB\n"
+"SwapPss: 0 kB\n"
+"Locked: 0 kB\n"
+;
+
+static int test_proc_pid_smaps_rollup(pid_t pid)
+{
+ char buf[4096];
+ snprintf(buf, sizeof(buf), "/proc/%u/smaps_rollup", pid);
+ int fd = open(buf, O_RDONLY);
+ if (fd == -1) {
+ if (errno == ENOENT) {
+ /*
+ * /proc/${pid}/smaps_rollup is under CONFIG_PROC_PAGE_MONITOR,
+ * it doesn't necessarily exist.
+ */
+ return EXIT_SUCCESS;
+ }
+ perror("open /proc/${pid}/smaps_rollup");
+ return EXIT_FAILURE;
+ } else {
+ ssize_t rv = read(fd, buf, sizeof(buf));
+ close(fd);
+ assert(rv == sizeof(g_smaps_rollup) - 1);
+ assert(memcmp(buf, g_smaps_rollup, sizeof(g_smaps_rollup) - 1) == 0);
+ return EXIT_SUCCESS;
+ }
+}
+
+int main(void)
+{
+ int rv = EXIT_SUCCESS;
+
+ vsyscall();
+
+ switch (g_vsyscall) {
+ case 0:
+ g_proc_pid_maps_vsyscall = proc_pid_maps_vsyscall_0;
+ g_proc_pid_smaps_vsyscall = proc_pid_smaps_vsyscall_0;
+ break;
+ case 1:
+ g_proc_pid_maps_vsyscall = proc_pid_maps_vsyscall_1;
+ g_proc_pid_smaps_vsyscall = proc_pid_smaps_vsyscall_1;
+ break;
+ case 2:
+ g_proc_pid_maps_vsyscall = proc_pid_maps_vsyscall_2;
+ g_proc_pid_smaps_vsyscall = proc_pid_smaps_vsyscall_2;
+ break;
+ default:
+ abort();
+ }
+
+ pid_t pid = fork();
+ if (pid == -1) {
+ perror("fork");
+ return EXIT_FAILURE;
+ } else if (pid == 0) {
+ rv = ptrace(PTRACE_TRACEME, 0, NULL, NULL);
+ if (rv != 0) {
+ if (errno == EPERM) {
+ fprintf(stderr,
+"Did you know? ptrace(PTRACE_TRACEME) doesn't work under strace.\n"
+ );
+ kill(getppid(), SIGTERM);
+ return EXIT_FAILURE;
+ }
+ perror("ptrace PTRACE_TRACEME");
+ return EXIT_FAILURE;
+ }
+
+ /*
+ * Hide "segfault at ..." messages. Signal handler won't run.
+ */
+ struct sigaction act = {};
+ act.sa_flags = SA_SIGINFO;
+ act.sa_sigaction = sigaction_SIGSEGV;
+ sigaction(SIGSEGV, &act, NULL);
+
+#ifdef __amd64__
+ munmap(NULL, ((size_t)1 << 47) - 4096);
+#else
+#error "implement 'unmap everything'"
+#endif
+ return EXIT_FAILURE;
+ } else {
+ /*
+ * TODO find reliable way to signal parent that munmap(2) completed.
+ * Child can't do it directly because it effectively doesn't exist
+ * anymore. Looking at child's VM files isn't 100% reliable either:
+ * due to a bug they may not become empty or empty-like.
+ */
+ sleep(1);
+
+ if (rv == EXIT_SUCCESS) {
+ rv = test_proc_pid_maps(pid);
+ }
+ if (rv == EXIT_SUCCESS) {
+ rv = test_proc_pid_numa_maps(pid);
+ }
+ if (rv == EXIT_SUCCESS) {
+ rv = test_proc_pid_smaps(pid);
+ }
+ if (rv == EXIT_SUCCESS) {
+ rv = test_proc_pid_smaps_rollup(pid);
+ }
+ /*
+ * TODO test /proc/${pid}/statm, task_statm()
+ * ->start_code, ->end_code aren't updated by munmap().
+ * Output can be "0 0 0 2 0 0 0\n" where "2" can be anything.
+ */
+
+ /* Cut the rope. */
+ int wstatus;
+ waitpid(pid, &wstatus, 0);
+ assert(WIFSTOPPED(wstatus));
+ assert(WSTOPSIG(wstatus) == SIGSEGV);
+ }
+
+ return rv;
+}
diff --git a/tools/testing/selftests/proc/proc-pid-vm.c b/tools/testing/selftests/proc/proc-pid-vm.c
index e5962f4794f5..69551bfa215c 100644
--- a/tools/testing/selftests/proc/proc-pid-vm.c
+++ b/tools/testing/selftests/proc/proc-pid-vm.c
@@ -213,22 +213,22 @@ static int make_exe(const uint8_t *payload, size_t len)
/*
* 0: vsyscall VMA doesn't exist vsyscall=none
- * 1: vsyscall VMA is r-xp vsyscall=emulate
- * 2: vsyscall VMA is --xp vsyscall=xonly
+ * 1: vsyscall VMA is --xp vsyscall=xonly
+ * 2: vsyscall VMA is r-xp vsyscall=emulate
*/
-static int g_vsyscall;
+static volatile int g_vsyscall;
static const char *str_vsyscall;
static const char str_vsyscall_0[] = "";
static const char str_vsyscall_1[] =
-"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n";
-static const char str_vsyscall_2[] =
"ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]\n";
+static const char str_vsyscall_2[] =
+"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n";
#ifdef __x86_64__
static void sigaction_SIGSEGV(int _, siginfo_t *__, void *___)
{
- _exit(1);
+ _exit(g_vsyscall);
}
/*
@@ -255,6 +255,7 @@ static void vsyscall(void)
act.sa_sigaction = sigaction_SIGSEGV;
(void)sigaction(SIGSEGV, &act, NULL);
+ g_vsyscall = 0;
/* gettimeofday(NULL, NULL); */
asm volatile (
"call %P0"
@@ -262,45 +263,20 @@ static void vsyscall(void)
: "i" (0xffffffffff600000), "D" (NULL), "S" (NULL)
: "rax", "rcx", "r11"
);
- exit(0);
- }
- waitpid(pid, &wstatus, 0);
- if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 0) {
- /* vsyscall page exists and is executable. */
- } else {
- /* vsyscall page doesn't exist. */
- g_vsyscall = 0;
- return;
- }
-
- pid = fork();
- if (pid < 0) {
- fprintf(stderr, "fork, errno %d\n", errno);
- exit(1);
- }
- if (pid == 0) {
- struct rlimit rlim = {0, 0};
- (void)setrlimit(RLIMIT_CORE, &rlim);
-
- /* Hide "segfault at ffffffffff600000" messages. */
- struct sigaction act;
- memset(&act, 0, sizeof(struct sigaction));
- act.sa_flags = SA_SIGINFO;
- act.sa_sigaction = sigaction_SIGSEGV;
- (void)sigaction(SIGSEGV, &act, NULL);
+ g_vsyscall = 1;
*(volatile int *)0xffffffffff600000UL;
- exit(0);
+
+ g_vsyscall = 2;
+ exit(g_vsyscall);
}
waitpid(pid, &wstatus, 0);
- if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 0) {
- /* vsyscall page is readable and executable. */
- g_vsyscall = 1;
- return;
+ if (WIFEXITED(wstatus)) {
+ g_vsyscall = WEXITSTATUS(wstatus);
+ } else {
+ fprintf(stderr, "error: wstatus %08x\n", wstatus);
+ exit(1);
}
-
- /* vsyscall page is executable but unreadable. */
- g_vsyscall = 2;
}
int main(void)
generated by cgit (git 2.34.1) at 2025-12-31 03:31:50 +0000