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linux_kselftest-fixes-6.12-rc3

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This kselftest update for Linux 6.12-rc3 consists of several fixes
 for build, run-time errors, and reporting errors:
 
 -- ftrace: regression test for a kernel crash when running function graph
    tracing and then enabling function profiler.
 
 -- rseq: fix for mm_cid test failure.
 
 -- vDSO:
    - fixes to reporting skip and other error conditions.
    - changes unconditionally build  chacha and getrandom tests on
      all architectures to make it easier for them to run in CIs.
    - build error when sched.h to bring in CLONE_NEWTIME define.
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Merge tag 'linux_kselftest-fixes-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "Fixes for build, run-time errors, and reporting errors:

   - ftrace: regression test for a kernel crash when running function
     graph tracing and then enabling function profiler.

   - rseq: fix for mm_cid test failure.

   - vDSO:
      - fixes to reporting skip and other error conditions
      - changes unconditionally build chacha and getrandom tests on all
        architectures to make it easier for them to run in CIs
      - build error when sched.h to bring in CLONE_NEWTIME define"

* tag 'linux_kselftest-fixes-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  ftrace/selftest: Test combination of function_graph tracer and function profiler
  selftests/rseq: Fix mm_cid test failure
  selftests: vDSO: Explicitly include sched.h
  selftests: vDSO: improve getrandom and chacha error messages
  selftests: vDSO: unconditionally build getrandom test
  selftests: vDSO: unconditionally build chacha test
This commit is contained in:
Linus Torvalds 2024-10-11 16:12:45 -07:00
commit 09f6b0c890
12 changed files with 183 additions and 109 deletions
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1
tools/arch/arm64/vdso
View File

@ -1 +0,0 @@
../../../arch/arm64/kernel/vdso

1
tools/arch/loongarch/vdso
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@ -1 +0,0 @@
../../../arch/loongarch/vdso

1
tools/arch/powerpc/vdso
View File

@ -1 +0,0 @@
../../../arch/powerpc/kernel/vdso

1
tools/arch/s390/vdso
View File

@ -1 +0,0 @@
../../../arch/s390/kernel/vdso64

1
tools/arch/x86/vdso
View File

@ -1 +0,0 @@
../../../arch/x86/entry/vdso/

31
tools/testing/selftests/ftrace/test.d/ftrace/fgraph-profiler.tc Normal file
View File

@ -0,0 +1,31 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: ftrace - function profiler with function graph tracing
# requires: function_profile_enabled set_ftrace_filter function_graph:tracer
# The function graph tracer can now be run along side of the function
# profiler. But there was a bug that caused the combination of the two
# to crash. It also required the function graph tracer to be started
# first.
#
# This test triggers that bug
#
# We need both function_graph and profiling to run this test
fail() { # mesg
echo $1
exit_fail
}
echo "Enabling function graph tracer:"
echo function_graph > current_tracer
echo "enable profiler"
# Older kernels do not allow function_profile to be enabled with
# function graph tracer. If the below fails, mark it as unsupported
echo 1 > function_profile_enabled || exit_unsupported
# Let it run for a bit to make sure nothing explodes
sleep 1
exit 0

110
tools/testing/selftests/rseq/rseq.c
View File

@ -60,12 +60,6 @@ unsigned int rseq_size = -1U;
/* Flags used during rseq registration. */
unsigned int rseq_flags;
/*
* rseq feature size supported by the kernel. 0 if the registration was
* unsuccessful.
*/
unsigned int rseq_feature_size = -1U;
static int rseq_ownership;
static int rseq_reg_success; /* At least one rseq registration has succeded. */
@ -111,6 +105,43 @@ int rseq_available(void)
}
}
/* The rseq areas need to be at least 32 bytes. */
static
unsigned int get_rseq_min_alloc_size(void)
{
unsigned int alloc_size = rseq_size;
if (alloc_size < ORIG_RSEQ_ALLOC_SIZE)
alloc_size = ORIG_RSEQ_ALLOC_SIZE;
return alloc_size;
}
/*
* Return the feature size supported by the kernel.
*
* Depending on the value returned by getauxval(AT_RSEQ_FEATURE_SIZE):
*
* 0: Return ORIG_RSEQ_FEATURE_SIZE (20)
* > 0: Return the value from getauxval(AT_RSEQ_FEATURE_SIZE).
*
* It should never return a value below ORIG_RSEQ_FEATURE_SIZE.
*/
static
unsigned int get_rseq_kernel_feature_size(void)
{
unsigned long auxv_rseq_feature_size, auxv_rseq_align;
auxv_rseq_align = getauxval(AT_RSEQ_ALIGN);
assert(!auxv_rseq_align || auxv_rseq_align <= RSEQ_THREAD_AREA_ALLOC_SIZE);
auxv_rseq_feature_size = getauxval(AT_RSEQ_FEATURE_SIZE);
assert(!auxv_rseq_feature_size || auxv_rseq_feature_size <= RSEQ_THREAD_AREA_ALLOC_SIZE);
if (auxv_rseq_feature_size)
return auxv_rseq_feature_size;
else
return ORIG_RSEQ_FEATURE_SIZE;
}
int rseq_register_current_thread(void)
{
int rc;
@ -119,7 +150,7 @@ int rseq_register_current_thread(void)
/* Treat libc's ownership as a successful registration. */
return 0;
}
rc = sys_rseq(&__rseq_abi, rseq_size, 0, RSEQ_SIG);
rc = sys_rseq(&__rseq_abi, get_rseq_min_alloc_size(), 0, RSEQ_SIG);
if (rc) {
if (RSEQ_READ_ONCE(rseq_reg_success)) {
/* Incoherent success/failure within process. */
@ -140,28 +171,12 @@ int rseq_unregister_current_thread(void)
/* Treat libc's ownership as a successful unregistration. */
return 0;
}
rc = sys_rseq(&__rseq_abi, rseq_size, RSEQ_ABI_FLAG_UNREGISTER, RSEQ_SIG);
rc = sys_rseq(&__rseq_abi, get_rseq_min_alloc_size(), RSEQ_ABI_FLAG_UNREGISTER, RSEQ_SIG);
if (rc)
return -1;
return 0;
}
static
unsigned int get_rseq_feature_size(void)
{
unsigned long auxv_rseq_feature_size, auxv_rseq_align;
auxv_rseq_align = getauxval(AT_RSEQ_ALIGN);
assert(!auxv_rseq_align || auxv_rseq_align <= RSEQ_THREAD_AREA_ALLOC_SIZE);
auxv_rseq_feature_size = getauxval(AT_RSEQ_FEATURE_SIZE);
assert(!auxv_rseq_feature_size || auxv_rseq_feature_size <= RSEQ_THREAD_AREA_ALLOC_SIZE);
if (auxv_rseq_feature_size)
return auxv_rseq_feature_size;
else
return ORIG_RSEQ_FEATURE_SIZE;
}
static __attribute__((constructor))
void rseq_init(void)
{
@ -178,28 +193,54 @@ void rseq_init(void)
}
if (libc_rseq_size_p && libc_rseq_offset_p && libc_rseq_flags_p &&
*libc_rseq_size_p != 0) {
unsigned int libc_rseq_size;
/* rseq registration owned by glibc */
rseq_offset = *libc_rseq_offset_p;
rseq_size = *libc_rseq_size_p;
libc_rseq_size = *libc_rseq_size_p;
rseq_flags = *libc_rseq_flags_p;
rseq_feature_size = get_rseq_feature_size();
if (rseq_feature_size > rseq_size)
rseq_feature_size = rseq_size;
/*
* Previous versions of glibc expose the value
* 32 even though the kernel only supported 20
* bytes initially. Therefore treat 32 as a
* special-case. glibc 2.40 exposes a 20 bytes
* __rseq_size without using getauxval(3) to
* query the supported size, while still allocating a 32
* bytes area. Also treat 20 as a special-case.
*
* Special-cases are handled by using the following
* value as active feature set size:
*
* rseq_size = min(32, get_rseq_kernel_feature_size())
*/
switch (libc_rseq_size) {
case ORIG_RSEQ_FEATURE_SIZE:
fallthrough;
case ORIG_RSEQ_ALLOC_SIZE:
{
unsigned int rseq_kernel_feature_size = get_rseq_kernel_feature_size();
if (rseq_kernel_feature_size < ORIG_RSEQ_ALLOC_SIZE)
rseq_size = rseq_kernel_feature_size;
else
rseq_size = ORIG_RSEQ_ALLOC_SIZE;
break;
}
default:
/* Otherwise just use the __rseq_size from libc as rseq_size. */
rseq_size = libc_rseq_size;
break;
}
return;
}
rseq_ownership = 1;
if (!rseq_available()) {
rseq_size = 0;
rseq_feature_size = 0;
return;
}
rseq_offset = (void *)&__rseq_abi - rseq_thread_pointer();
rseq_flags = 0;
rseq_feature_size = get_rseq_feature_size();
if (rseq_feature_size == ORIG_RSEQ_FEATURE_SIZE)
rseq_size = ORIG_RSEQ_ALLOC_SIZE;
else
rseq_size = RSEQ_THREAD_AREA_ALLOC_SIZE;
}
static __attribute__((destructor))
@ -209,7 +250,6 @@ void rseq_exit(void)
return;
rseq_offset = 0;
rseq_size = -1U;
rseq_feature_size = -1U;
rseq_ownership = 0;
}

10
tools/testing/selftests/rseq/rseq.h
View File

@ -68,12 +68,6 @@ extern unsigned int rseq_size;
/* Flags used during rseq registration. */
extern unsigned int rseq_flags;
/*
* rseq feature size supported by the kernel. 0 if the registration was
* unsuccessful.
*/
extern unsigned int rseq_feature_size;
enum rseq_mo {
RSEQ_MO_RELAXED = 0,
RSEQ_MO_CONSUME = 1, /* Unused */
@ -193,7 +187,7 @@ static inline uint32_t rseq_current_cpu(void)
static inline bool rseq_node_id_available(void)
{
return (int) rseq_feature_size >= rseq_offsetofend(struct rseq_abi, node_id);
return (int) rseq_size >= rseq_offsetofend(struct rseq_abi, node_id);
}
/*
@ -207,7 +201,7 @@ static inline uint32_t rseq_current_node_id(void)
static inline bool rseq_mm_cid_available(void)
{
return (int) rseq_feature_size >= rseq_offsetofend(struct rseq_abi, mm_cid);
return (int) rseq_size >= rseq_offsetofend(struct rseq_abi, mm_cid);
}
static inline uint32_t rseq_current_mm_cid(void)

6
tools/testing/selftests/vDSO/Makefile
View File

@ -9,10 +9,8 @@ ifeq ($(ARCH),$(filter $(ARCH),x86 x86_64))
TEST_GEN_PROGS += vdso_standalone_test_x86
endif
TEST_GEN_PROGS += vdso_test_correctness
ifeq ($(ARCH)$(CONFIG_X86_32),$(filter $(ARCH)$(CONFIG_X86_32),x86 x86_64 loongarch arm64 powerpc s390))
TEST_GEN_PROGS += vdso_test_getrandom
TEST_GEN_PROGS += vdso_test_chacha
endif
CFLAGS := -std=gnu99 -O2
@ -37,9 +35,9 @@ $(OUTPUT)/vdso_test_getrandom: CFLAGS += -isystem $(top_srcdir)/tools/include \
$(KHDR_INCLUDES) \
-isystem $(top_srcdir)/include/uapi
$(OUTPUT)/vdso_test_chacha: $(top_srcdir)/tools/arch/$(SRCARCH)/vdso/vgetrandom-chacha.S
$(OUTPUT)/vdso_test_chacha: vgetrandom-chacha.S
$(OUTPUT)/vdso_test_chacha: CFLAGS += -idirafter $(top_srcdir)/tools/include \
-idirafter $(top_srcdir)/tools/include/generated \
-idirafter $(top_srcdir)/arch/$(SRCARCH)/include \
-idirafter $(top_srcdir)/include \
-D__ASSEMBLY__ -Wa,--noexecstack
-Wa,--noexecstack

36
tools/testing/selftests/vDSO/vdso_test_chacha.c
View File

@ -3,6 +3,7 @@
* Copyright (C) 2022-2024 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#include <linux/compiler.h>
#include <tools/le_byteshift.h>
#include <sys/random.h>
#include <sys/auxv.h>
@ -73,10 +74,10 @@ static void reference_chacha20_blocks(uint8_t *dst_bytes, const uint32_t *key, u
counter[1] = s[13];
}
typedef uint8_t u8;
typedef uint32_t u32;
typedef uint64_t u64;
#include <vdso/getrandom.h>
void __weak __arch_chacha20_blocks_nostack(uint8_t *dst_bytes, const uint32_t *key, uint32_t *counter, size_t nblocks)
{
ksft_exit_skip("Not implemented on architecture\n");
}
int main(int argc, char *argv[])
{
@ -90,10 +91,8 @@ int main(int argc, char *argv[])
ksft_set_plan(1);
for (unsigned int trial = 0; trial < TRIALS; ++trial) {
if (getrandom(key, sizeof(key), 0) != sizeof(key)) {
printf("getrandom() failed!\n");
return KSFT_SKIP;
}
if (getrandom(key, sizeof(key), 0) != sizeof(key))
ksft_exit_skip("getrandom() failed unexpectedly\n");
memset(counter1, 0, sizeof(counter1));
reference_chacha20_blocks(output1, key, counter1, BLOCKS);
for (unsigned int split = 0; split < BLOCKS; ++split) {
@ -102,8 +101,10 @@ int main(int argc, char *argv[])
if (split)
__arch_chacha20_blocks_nostack(output2, key, counter2, split);
__arch_chacha20_blocks_nostack(output2 + split * BLOCK_SIZE, key, counter2, BLOCKS - split);
if (memcmp(output1, output2, sizeof(output1)) || memcmp(counter1, counter2, sizeof(counter1)))
return KSFT_FAIL;
if (memcmp(output1, output2, sizeof(output1)))
ksft_exit_fail_msg("Main loop outputs do not match on trial %u, split %u\n", trial, split);
if (memcmp(counter1, counter2, sizeof(counter1)))
ksft_exit_fail_msg("Main loop counters do not match on trial %u, split %u\n", trial, split);
}
}
memset(counter1, 0, sizeof(counter1));
@ -113,14 +114,19 @@ int main(int argc, char *argv[])
reference_chacha20_blocks(output1, key, counter1, BLOCKS);
__arch_chacha20_blocks_nostack(output2, key, counter2, BLOCKS);
if (memcmp(output1, output2, sizeof(output1)) || memcmp(counter1, counter2, sizeof(counter1)))
return KSFT_FAIL;
if (memcmp(output1, output2, sizeof(output1)))
ksft_exit_fail_msg("Block limit outputs do not match after first round\n");
if (memcmp(counter1, counter2, sizeof(counter1)))
ksft_exit_fail_msg("Block limit counters do not match after first round\n");
reference_chacha20_blocks(output1, key, counter1, BLOCKS);
__arch_chacha20_blocks_nostack(output2, key, counter2, BLOCKS);
if (memcmp(output1, output2, sizeof(output1)) || memcmp(counter1, counter2, sizeof(counter1)))
return KSFT_FAIL;
if (memcmp(output1, output2, sizeof(output1)))
ksft_exit_fail_msg("Block limit outputs do not match after second round\n");
if (memcmp(counter1, counter2, sizeof(counter1)))
ksft_exit_fail_msg("Block limit counters do not match after second round\n");
ksft_test_result_pass("chacha: PASS\n");
return KSFT_PASS;
ksft_exit_pass();
return 0;
}

76
tools/testing/selftests/vDSO/vdso_test_getrandom.c
View File

@ -11,6 +11,7 @@
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sched.h>
#include <signal.h>
#include <sys/auxv.h>
#include <sys/mman.h>
@ -40,6 +41,9 @@
} while (0)
#endif
#define ksft_assert(condition) \
do { if (!(condition)) ksft_exit_fail_msg("Assertion failed: %s\n", #condition); } while (0)
static struct {
pthread_mutex_t lock;
void **states;
@ -111,26 +115,19 @@ static void vgetrandom_init(void)
const char *version = versions[VDSO_VERSION];
const char *name = names[VDSO_NAMES][6];
unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
size_t ret;
ssize_t ret;
if (!sysinfo_ehdr) {
printf("AT_SYSINFO_EHDR is not present!\n");
exit(KSFT_SKIP);
}
if (!sysinfo_ehdr)
ksft_exit_skip("AT_SYSINFO_EHDR is not present\n");
vdso_init_from_sysinfo_ehdr(sysinfo_ehdr);
vgrnd.fn = (__typeof__(vgrnd.fn))vdso_sym(version, name);
if (!vgrnd.fn) {
printf("%s is missing!\n", name);
exit(KSFT_FAIL);
}
if (!vgrnd.fn)
ksft_exit_skip("%s@%s symbol is missing from vDSO\n", name, version);
ret = VDSO_CALL(vgrnd.fn, 5, NULL, 0, 0, &vgrnd.params, ~0UL);
if (ret == -ENOSYS) {
printf("unsupported architecture\n");
exit(KSFT_SKIP);
} else if (ret) {
printf("failed to fetch vgetrandom params!\n");
exit(KSFT_FAIL);
}
if (ret == -ENOSYS)
ksft_exit_skip("CPU does not have runtime support\n");
else if (ret)
ksft_exit_fail_msg("Failed to fetch vgetrandom params: %zd\n", ret);
}
static ssize_t vgetrandom(void *buf, size_t len, unsigned long flags)
@ -139,10 +136,7 @@ static ssize_t vgetrandom(void *buf, size_t len, unsigned long flags)
if (!state) {
state = vgetrandom_get_state();
if (!state) {
printf("vgetrandom_get_state failed!\n");
exit(KSFT_FAIL);
}
ksft_assert(state);
}
return VDSO_CALL(vgrnd.fn, 5, buf, len, flags, state, vgrnd.params.size_of_opaque_state);
}
@ -154,7 +148,7 @@ static void *test_vdso_getrandom(void *ctx)
for (size_t i = 0; i < TRIALS; ++i) {
unsigned int val;
ssize_t ret = vgetrandom(&val, sizeof(val), 0);
assert(ret == sizeof(val));
ksft_assert(ret == sizeof(val));
}
return NULL;
}
@ -164,7 +158,7 @@ static void *test_libc_getrandom(void *ctx)
for (size_t i = 0; i < TRIALS; ++i) {
unsigned int val;
ssize_t ret = getrandom(&val, sizeof(val), 0);
assert(ret == sizeof(val));
ksft_assert(ret == sizeof(val));
}
return NULL;
}
@ -174,7 +168,7 @@ static void *test_syscall_getrandom(void *ctx)
for (size_t i = 0; i < TRIALS; ++i) {
unsigned int val;
ssize_t ret = syscall(__NR_getrandom, &val, sizeof(val), 0);
assert(ret == sizeof(val));
ksft_assert(ret == sizeof(val));
}
return NULL;
}
@ -209,7 +203,7 @@ static void bench_multi(void)
clock_gettime(CLOCK_MONOTONIC, &start);
for (size_t i = 0; i < THREADS; ++i)
assert(pthread_create(&threads[i], NULL, test_vdso_getrandom, NULL) == 0);
ksft_assert(pthread_create(&threads[i], NULL, test_vdso_getrandom, NULL) == 0);
for (size_t i = 0; i < THREADS; ++i)
pthread_join(threads[i], NULL);
clock_gettime(CLOCK_MONOTONIC, &end);
@ -218,7 +212,7 @@ static void bench_multi(void)
clock_gettime(CLOCK_MONOTONIC, &start);
for (size_t i = 0; i < THREADS; ++i)
assert(pthread_create(&threads[i], NULL, test_libc_getrandom, NULL) == 0);
ksft_assert(pthread_create(&threads[i], NULL, test_libc_getrandom, NULL) == 0);
for (size_t i = 0; i < THREADS; ++i)
pthread_join(threads[i], NULL);
clock_gettime(CLOCK_MONOTONIC, &end);
@ -227,7 +221,7 @@ static void bench_multi(void)
clock_gettime(CLOCK_MONOTONIC, &start);
for (size_t i = 0; i < THREADS; ++i)
assert(pthread_create(&threads[i], NULL, test_syscall_getrandom, NULL) == 0);
ksft_assert(pthread_create(&threads[i], NULL, test_syscall_getrandom, NULL) == 0);
for (size_t i = 0; i < THREADS; ++i)
pthread_join(threads[i], NULL);
clock_gettime(CLOCK_MONOTONIC, &end);
@ -252,48 +246,46 @@ static void kselftest(void)
for (size_t i = 0; i < 1000; ++i) {
ssize_t ret = vgetrandom(weird_size, sizeof(weird_size), 0);
if (ret != sizeof(weird_size))
exit(KSFT_FAIL);
ksft_assert(ret == sizeof(weird_size));
}
ksft_test_result_pass("getrandom: PASS\n");
unshare(CLONE_NEWUSER);
assert(unshare(CLONE_NEWTIME) == 0);
ksft_assert(unshare(CLONE_NEWTIME) == 0);
child = fork();
assert(child >= 0);
ksft_assert(child >= 0);
if (!child) {
vgetrandom_init();
child = getpid();
assert(ptrace(PTRACE_TRACEME, 0, NULL, NULL) == 0);
assert(kill(child, SIGSTOP) == 0);
assert(vgetrandom(weird_size, sizeof(weird_size), 0) == sizeof(weird_size));
ksft_assert(ptrace(PTRACE_TRACEME, 0, NULL, NULL) == 0);
ksft_assert(kill(child, SIGSTOP) == 0);
ksft_assert(vgetrandom(weird_size, sizeof(weird_size), 0) == sizeof(weird_size));
_exit(0);
}
for (;;) {
struct ptrace_syscall_info info = { 0 };
int status, ret;
assert(waitpid(child, &status, 0) >= 0);
ksft_assert(waitpid(child, &status, 0) >= 0);
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) != 0)
exit(KSFT_FAIL);
ksft_assert(WEXITSTATUS(status) == 0);
break;
}
assert(WIFSTOPPED(status));
ksft_assert(WIFSTOPPED(status));
if (WSTOPSIG(status) == SIGSTOP)
assert(ptrace(PTRACE_SETOPTIONS, child, 0, PTRACE_O_TRACESYSGOOD) == 0);
ksft_assert(ptrace(PTRACE_SETOPTIONS, child, 0, PTRACE_O_TRACESYSGOOD) == 0);
else if (WSTOPSIG(status) == (SIGTRAP | 0x80)) {
assert(ptrace(PTRACE_GET_SYSCALL_INFO, child, sizeof(info), &info) > 0);
ksft_assert(ptrace(PTRACE_GET_SYSCALL_INFO, child, sizeof(info), &info) > 0);
if (info.op == PTRACE_SYSCALL_INFO_ENTRY && info.entry.nr == __NR_getrandom &&
info.entry.args[0] == (uintptr_t)weird_size && info.entry.args[1] == sizeof(weird_size))
exit(KSFT_FAIL);
ksft_exit_fail_msg("vgetrandom passed buffer to syscall getrandom unexpectedly\n");
}
assert(ptrace(PTRACE_SYSCALL, child, 0, 0) == 0);
ksft_assert(ptrace(PTRACE_SYSCALL, child, 0, 0) == 0);
}
ksft_test_result_pass("getrandom timens: PASS\n");
exit(KSFT_PASS);
ksft_exit_pass();
}
static void usage(const char *argv0)

18
tools/testing/selftests/vDSO/vgetrandom-chacha.S Normal file
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@ -0,0 +1,18 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2024 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#define __ASSEMBLY__
#if defined(__aarch64__)
#include "../../../../arch/arm64/kernel/vdso/vgetrandom-chacha.S"
#elif defined(__loongarch__)
#include "../../../../arch/loongarch/vdso/vgetrandom-chacha.S"
#elif defined(__powerpc__) || defined(__powerpc64__)
#include "../../../../arch/powerpc/kernel/vdso/vgetrandom-chacha.S"
#elif defined(__s390x__)
#include "../../../../arch/s390/kernel/vdso64/vgetrandom-chacha.S"
#elif defined(__x86_64__)
#include "../../../../arch/x86/entry/vdso/vgetrandom-chacha.S"
#endif