[PATCH 0/1] selftest mm/mseal: style change

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jeffxu＠chromium.org

16 Apr 2024 16 Apr '24

10:09 p.m.

From: Jeff Xu jeffxu@chromium.org

This patch is a follow up to the comments [1] on test code during mseal discussion. This is style only change to the selftest code, not to test code logic.

Please apply on top of mseal v10 patch [2]

[1] https://lore.kernel.org/all/e1744539-a843-468a-9101-ce7a08669394@collabora.c...

[2] https://lore.kernel.org/all/20240415163527.626541-1-jeffxu@chromium.org/

Thanks

Jeff Xu (1): selftest mm/mseal: style change

tools/testing/selftests/mm/mseal_test.c | 124 +++++++++++++++++------- tools/testing/selftests/mm/seal_elf.c | 3 - 2 files changed, 91 insertions(+), 36 deletions(-)

-- 2.44.0.683.g7961c838ac-goog

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jeffxu＠chromium.org

16 Apr 16 Apr

10:09 p.m.

New subject: [PATCH 1/1] selftest mm/mseal: style change

From: Jeff Xu jeffxu@chromium.org

remove "assert" from testcase. remove "return 0"

Signed-off-by: Jeff Xu jeffxu@chromium.org Suggested-by: Muhammad Usama Anjum usama.anjum@collabora.com --- tools/testing/selftests/mm/mseal_test.c | 124 +++++++++++++++++------- tools/testing/selftests/mm/seal_elf.c | 3 - 2 files changed, 91 insertions(+), 36 deletions(-)

diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c index 06c780d1d8e5..4a326334726d 100644 --- a/tools/testing/selftests/mm/mseal_test.c +++ b/tools/testing/selftests/mm/mseal_test.c @@ -12,9 +12,7 @@ #include <errno.h> #include <stdio.h> #include <stdlib.h> -#include <assert.h> #include <fcntl.h> -#include <assert.h> #include <sys/ioctl.h> #include <sys/vfs.h> #include <sys/stat.h> @@ -189,7 +187,6 @@ static void __write_pkey_reg(u64 pkey_reg)

asm volatile(".byte 0x0f,0x01,0xef\n\t" : : "a" (eax), "c" (ecx), "d" (edx)); - assert(pkey_reg == __read_pkey_reg()); #endif }

@@ -214,7 +211,6 @@ static void set_pkey(int pkey, unsigned long pkey_value) unsigned long mask = (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE); u64 new_pkey_reg;

- assert(!(pkey_value & ~mask)); new_pkey_reg = set_pkey_bits(__read_pkey_reg(), pkey, pkey_value); __write_pkey_reg(new_pkey_reg); } @@ -224,7 +220,6 @@ static void setup_single_address(int size, void **ptrOut) void *ptr;

ptr = sys_mmap(NULL, size, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); - assert(ptr != (void *)-1); *ptrOut = ptr; }

@@ -234,24 +229,21 @@ static void setup_single_address_rw(int size, void **ptrOut) unsigned long mapflags = MAP_ANONYMOUS | MAP_PRIVATE;

ptr = sys_mmap(NULL, size, PROT_READ | PROT_WRITE, mapflags, -1, 0); - assert(ptr != (void *)-1); *ptrOut = ptr; }

-static void clean_single_address(void *ptr, int size) +static int clean_single_address(void *ptr, int size) { int ret; - ret = munmap(ptr, size); - assert(!ret); + return ret; }

-static void seal_single_address(void *ptr, int size) +static int seal_single_address(void *ptr, int size) { int ret; - ret = sys_mseal(ptr, size); - assert(!ret); + return ret; }

bool seal_support(void) @@ -290,6 +282,7 @@ static void test_seal_addseal(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_mseal(ptr, size); FAIL_TEST_IF_FALSE(!ret); @@ -305,6 +298,7 @@ static void test_seal_unmapped_start(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* munmap 2 pages from ptr. */ ret = sys_munmap(ptr, 2 * page_size); @@ -332,6 +326,7 @@ static void test_seal_unmapped_middle(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* munmap 2 pages from ptr + page. */ ret = sys_munmap(ptr + page_size, 2 * page_size); @@ -363,6 +358,7 @@ static void test_seal_unmapped_end(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* unmap last 2 pages. */ ret = sys_munmap(ptr + 2 * page_size, 2 * page_size); @@ -391,6 +387,7 @@ static void test_seal_multiple_vmas(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split the vma into 3. */ ret = sys_mprotect(ptr + page_size, 2 * page_size, @@ -421,6 +418,7 @@ static void test_seal_split_start(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split at middle */ ret = sys_mprotect(ptr, 2 * page_size, PROT_READ | PROT_WRITE); @@ -445,6 +443,7 @@ static void test_seal_split_end(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split at middle */ ret = sys_mprotect(ptr, 2 * page_size, PROT_READ | PROT_WRITE); @@ -469,7 +468,9 @@ static void test_seal_invalid_input(void) int ret;

setup_single_address(8 * page_size, &ptr); - clean_single_address(ptr + 4 * page_size, 4 * page_size); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); + ret = clean_single_address(ptr + 4 * page_size, 4 * page_size); + FAIL_TEST_IF_FALSE(!ret);

/* invalid flag */ ret = syscall(__NR_mseal, ptr, size, 0x20); @@ -502,6 +503,7 @@ static void test_seal_zero_length(void) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_mprotect(ptr, 0, PROT_READ | PROT_WRITE); FAIL_TEST_IF_FALSE(!ret); @@ -551,6 +553,7 @@ static void test_seal_twice(void) unsigned long size = 4 * page_size;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_mseal(ptr, size); FAIL_TEST_IF_FALSE(!ret); @@ -570,9 +573,12 @@ static void test_seal_mprotect(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

- if (seal) - seal_single_address(ptr, size); + if (seal) { + ret = seal_single_address(ptr, size); + FAIL_TEST_IF_FALSE(!ret); + }

ret = sys_mprotect(ptr, size, PROT_READ | PROT_WRITE); if (seal) @@ -591,9 +597,12 @@ static void test_seal_start_mprotect(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

- if (seal) - seal_single_address(ptr, page_size); + if (seal) { + ret = seal_single_address(ptr, page_size); + FAIL_TEST_IF_FALSE(!ret); + }

/* the first page is sealed. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -618,9 +627,12 @@ static void test_seal_end_mprotect(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

- if (seal) - seal_single_address(ptr + page_size, 3 * page_size); + if (seal) { + ret = seal_single_address(ptr + page_size, 3 * page_size); + FAIL_TEST_IF_FALSE(!ret); + }

/* first page is not sealed */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -645,9 +657,12 @@ static void test_seal_mprotect_unalign_len(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

- if (seal) - seal_single_address(ptr, page_size * 2 - 1); + if (seal) { + ret = seal_single_address(ptr, page_size * 2 - 1); + FAIL_TEST_IF_FALSE(!ret); + }

/* 2 pages are sealed. */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); @@ -671,8 +686,11 @@ static void test_seal_mprotect_unalign_len_variant_2(bool seal) int ret;

setup_single_address(size, &ptr); - if (seal) - seal_single_address(ptr, page_size * 2 + 1); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); + if (seal) { + ret = seal_single_address(ptr, page_size * 2 + 1); + FAIL_TEST_IF_FALSE(!ret); + }

/* 3 pages are sealed. */ ret = sys_mprotect(ptr, page_size * 3, PROT_READ | PROT_WRITE); @@ -696,13 +714,16 @@ static void test_seal_mprotect_two_vma(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); FAIL_TEST_IF_FALSE(!ret);

- if (seal) - seal_single_address(ptr, page_size * 4); + if (seal) { + ret = seal_single_address(ptr, page_size * 4); + FAIL_TEST_IF_FALSE(!ret); + }

ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); if (seal) @@ -728,14 +749,17 @@ static void test_seal_mprotect_two_vma_with_split(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split as two vma. */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); FAIL_TEST_IF_FALSE(!ret);

/* mseal can apply across 2 vma, also split them. */ - if (seal) - seal_single_address(ptr + page_size, page_size * 2); + if (seal) { + ret = seal_single_address(ptr + page_size, page_size * 2); + FAIL_TEST_IF_FALSE(!ret); + }

/* the first page is not sealed. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -772,10 +796,13 @@ static void test_seal_mprotect_partial_mprotect(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* seal one page. */ - if (seal) - seal_single_address(ptr, page_size); + if (seal) { + ret = seal_single_address(ptr, page_size); + FAIL_TEST_IF_FALSE(!ret); + }

/* mprotect first 2 page will fail, since the first page are sealed. */ ret = sys_mprotect(ptr, 2 * page_size, PROT_READ | PROT_WRITE); @@ -795,6 +822,7 @@ static void test_seal_mprotect_two_vma_with_gap(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -837,6 +865,7 @@ static void test_seal_mprotect_split(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -873,6 +902,7 @@ static void test_seal_mprotect_merge(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split one page. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -906,6 +936,7 @@ static void test_seal_munmap(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -936,6 +967,7 @@ static void test_seal_munmap_two_vma(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); @@ -976,6 +1008,7 @@ static void test_seal_munmap_vma_with_gap(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_munmap(ptr + page_size, page_size * 2); FAIL_TEST_IF_FALSE(!ret); @@ -1007,6 +1040,7 @@ static void test_munmap_start_freed(bool seal) int prot;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* unmap the first page. */ ret = sys_munmap(ptr, page_size); @@ -1045,6 +1079,8 @@ static void test_munmap_end_freed(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); + /* unmap last page. */ ret = sys_munmap(ptr + page_size * 3, page_size); FAIL_TEST_IF_FALSE(!ret); @@ -1074,6 +1110,8 @@ static void test_munmap_middle_freed(bool seal) int prot;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); + /* unmap 2 pages in the middle. */ ret = sys_munmap(ptr + page_size, page_size * 2); FAIL_TEST_IF_FALSE(!ret); @@ -1116,6 +1154,7 @@ static void test_seal_mremap_shrink(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1144,6 +1183,7 @@ static void test_seal_mremap_expand(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); /* ummap last 2 pages. */ ret = sys_munmap(ptr + 2 * page_size, 2 * page_size); FAIL_TEST_IF_FALSE(!ret); @@ -1175,8 +1215,11 @@ static void test_seal_mremap_move(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newPtr); - clean_single_address(newPtr, size); + FAIL_TEST_IF_FALSE(newPtr != (void *)-1); + ret = clean_single_address(newPtr, size); + FAIL_TEST_IF_FALSE(!ret);

if (seal) { ret = sys_mseal(ptr, size); @@ -1205,6 +1248,7 @@ static void test_seal_mmap_overwrite_prot(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1232,6 +1276,7 @@ static void test_seal_mmap_expand(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); /* ummap last 4 pages. */ ret = sys_munmap(ptr + 8 * page_size, 4 * page_size); FAIL_TEST_IF_FALSE(!ret); @@ -1262,6 +1307,7 @@ static void test_seal_mmap_shrink(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1290,7 +1336,9 @@ static void test_seal_mremap_shrink_fixed(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newAddr); + FAIL_TEST_IF_FALSE(newAddr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1319,7 +1367,9 @@ static void test_seal_mremap_expand_fixed(bool seal) void *ret2;

setup_single_address(page_size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newAddr); + FAIL_TEST_IF_FALSE(newAddr != (void *)-1);

if (seal) { ret = sys_mseal(newAddr, size); @@ -1348,7 +1398,9 @@ static void test_seal_mremap_move_fixed(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newAddr); + FAIL_TEST_IF_FALSE(newAddr != (void *)-1);

if (seal) { ret = sys_mseal(newAddr, size); @@ -1375,6 +1427,7 @@ static void test_seal_mremap_move_fixed_zero(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1406,6 +1459,7 @@ static void test_seal_mremap_move_dontunmap(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1434,6 +1488,7 @@ static void test_seal_mremap_move_dontunmap_anyaddr(bool seal) void *ret2;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1469,6 +1524,7 @@ static void test_seal_merge_and_split(void)

/* (24 RO) */ setup_single_address(24 * page_size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect(NONE) to set out boundary */ /* (1 NONE) (22 RO) (1 NONE) */ @@ -1700,9 +1756,12 @@ static void test_seal_discard_ro_anon(bool seal) int ret;

setup_single_address(size, &ptr); + FAIL_TEST_IF_FALSE(ptr != (void *)-1);

- if (seal) - seal_single_address(ptr, size); + if (seal) { + ret = seal_single_address(ptr, size); + FAIL_TEST_IF_FALSE(!ret); + }

ret = sys_madvise(ptr, size, MADV_DONTNEED); if (seal) @@ -1832,5 +1891,4 @@ int main(int argc, char **argv) test_seal_discard_ro_anon_on_pkey(true);

ksft_finished(); - return 0; } diff --git a/tools/testing/selftests/mm/seal_elf.c b/tools/testing/selftests/mm/seal_elf.c index 61a2f1c94e02..7143dc4f1b10 100644 --- a/tools/testing/selftests/mm/seal_elf.c +++ b/tools/testing/selftests/mm/seal_elf.c @@ -12,9 +12,7 @@ #include <errno.h> #include <stdio.h> #include <stdlib.h> -#include <assert.h> #include <fcntl.h> -#include <assert.h> #include <sys/ioctl.h> #include <sys/vfs.h> #include <sys/stat.h> @@ -179,5 +177,4 @@ int main(int argc, char **argv) test_seal_elf();

ksft_finished(); - return 0; }

-- 2.44.0.683.g7961c838ac-goog

Muhammad Usama Anjum

17 Apr 17 Apr

6:43 a.m.

New subject: [PATCH 1/1] selftest mm/mseal: style change

On 4/17/24 3:09 AM, jeffxu@chromium.org wrote:

...

From: Jeff Xu jeffxu@chromium.org

remove "assert" from testcase. remove "return 0"

Thanks

...

Signed-off-by: Jeff Xu jeffxu@chromium.org Suggested-by: Muhammad Usama Anjum usama.anjum@collabora.com

Reviewed-by: Muhammad Usama Anjum usama.anjum@collabora.com

...

tools/testing/selftests/mm/mseal_test.c | 124 +++++++++++++++++------- tools/testing/selftests/mm/seal_elf.c | 3 - 2 files changed, 91 insertions(+), 36 deletions(-)

diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c index 06c780d1d8e5..4a326334726d 100644 --- a/tools/testing/selftests/mm/mseal_test.c +++ b/tools/testing/selftests/mm/mseal_test.c @@ -12,9 +12,7 @@ #include <errno.h> #include <stdio.h> #include <stdlib.h> -#include <assert.h> #include <fcntl.h> -#include <assert.h> #include <sys/ioctl.h> #include <sys/vfs.h> #include <sys/stat.h> @@ -189,7 +187,6 @@ static void __write_pkey_reg(u64 pkey_reg) asm volatile(".byte 0x0f,0x01,0xef\n\t" : : "a" (eax), "c" (ecx), "d" (edx));

assert(pkey_reg == __read_pkey_reg());

#endif } @@ -214,7 +211,6 @@ static void set_pkey(int pkey, unsigned long pkey_value) unsigned long mask = (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE); u64 new_pkey_reg;

assert(!(pkey_value & ~mask)); new_pkey_reg = set_pkey_bits(__read_pkey_reg(), pkey, pkey_value); __write_pkey_reg(new_pkey_reg);

} @@ -224,7 +220,6 @@ static void setup_single_address(int size, void **ptrOut) void *ptr; ptr = sys_mmap(NULL, size, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);

assert(ptr != (void *)-1); *ptrOut = ptr;

} @@ -234,24 +229,21 @@ static void setup_single_address_rw(int size, void **ptrOut) unsigned long mapflags = MAP_ANONYMOUS | MAP_PRIVATE; ptr = sys_mmap(NULL, size, PROT_READ | PROT_WRITE, mapflags, -1, 0);

assert(ptr != (void *)-1); *ptrOut = ptr;

} -static void clean_single_address(void *ptr, int size) +static int clean_single_address(void *ptr, int size) { int ret;

ret = munmap(ptr, size);

assert(!ret);

return ret;

} -static void seal_single_address(void *ptr, int size) +static int seal_single_address(void *ptr, int size) { int ret;

ret = sys_mseal(ptr, size);

assert(!ret);

return ret;

} bool seal_support(void) @@ -290,6 +282,7 @@ static void test_seal_addseal(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_mseal(ptr, size); FAIL_TEST_IF_FALSE(!ret); @@ -305,6 +298,7 @@ static void test_seal_unmapped_start(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* munmap 2 pages from ptr. */ ret = sys_munmap(ptr, 2 * page_size); @@ -332,6 +326,7 @@ static void test_seal_unmapped_middle(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* munmap 2 pages from ptr + page. */ ret = sys_munmap(ptr + page_size, 2 * page_size); @@ -363,6 +358,7 @@ static void test_seal_unmapped_end(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* unmap last 2 pages. */ ret = sys_munmap(ptr + 2 * page_size, 2 * page_size); @@ -391,6 +387,7 @@ static void test_seal_multiple_vmas(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split the vma into 3. */ ret = sys_mprotect(ptr + page_size, 2 * page_size, @@ -421,6 +418,7 @@ static void test_seal_split_start(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split at middle */ ret = sys_mprotect(ptr, 2 * page_size, PROT_READ | PROT_WRITE); @@ -445,6 +443,7 @@ static void test_seal_split_end(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split at middle */ ret = sys_mprotect(ptr, 2 * page_size, PROT_READ | PROT_WRITE); @@ -469,7 +468,9 @@ static void test_seal_invalid_input(void) int ret; setup_single_address(8 * page_size, &ptr);

clean_single_address(ptr + 4 * page_size, 4 * page_size);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = clean_single_address(ptr + 4 * page_size, 4 * page_size);

FAIL_TEST_IF_FALSE(!ret);

/* invalid flag */ ret = syscall(__NR_mseal, ptr, size, 0x20); @@ -502,6 +503,7 @@ static void test_seal_zero_length(void) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_mprotect(ptr, 0, PROT_READ | PROT_WRITE); FAIL_TEST_IF_FALSE(!ret); @@ -551,6 +553,7 @@ static void test_seal_twice(void) unsigned long size = 4 * page_size; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_mseal(ptr, size); FAIL_TEST_IF_FALSE(!ret); @@ -570,9 +573,12 @@ static void test_seal_mprotect(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);
if (seal)
seal_single_address(ptr, size);
if (seal) {
ret = seal_single_address(ptr, size);
FAIL_TEST_IF_FALSE(!ret);
}
ret = sys_mprotect(ptr, size, PROT_READ | PROT_WRITE); if (seal) @@ -591,9 +597,12 @@ static void test_seal_start_mprotect(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);
if (seal)
seal_single_address(ptr, page_size);
if (seal) {
ret = seal_single_address(ptr, page_size);
FAIL_TEST_IF_FALSE(!ret);
}
/* the first page is sealed. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -618,9 +627,12 @@ static void test_seal_end_mprotect(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);
if (seal)
seal_single_address(ptr + page_size, 3 * page_size);
if (seal) {
ret = seal_single_address(ptr + page_size, 3 * page_size);
FAIL_TEST_IF_FALSE(!ret);
}
/* first page is not sealed */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -645,9 +657,12 @@ static void test_seal_mprotect_unalign_len(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);
if (seal)
seal_single_address(ptr, page_size * 2 - 1);
if (seal) {
ret = seal_single_address(ptr, page_size * 2 - 1);
FAIL_TEST_IF_FALSE(!ret);
}
/* 2 pages are sealed. */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); @@ -671,8 +686,11 @@ static void test_seal_mprotect_unalign_len_variant_2(bool seal) int ret; setup_single_address(size, &ptr);
if (seal)
seal_single_address(ptr, page_size * 2 + 1);
FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) {
ret =  seal_single_address(ptr, page_size * 2 + 1);
FAIL_TEST_IF_FALSE(!ret);
}
/* 3 pages are sealed. */ ret = sys_mprotect(ptr, page_size * 3, PROT_READ | PROT_WRITE); @@ -696,13 +714,16 @@ static void test_seal_mprotect_two_vma(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); FAIL_TEST_IF_FALSE(!ret);
if (seal)
seal_single_address(ptr, page_size * 4);
if (seal) {
ret = seal_single_address(ptr, page_size * 4);
FAIL_TEST_IF_FALSE(!ret);
}
ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); if (seal) @@ -728,14 +749,17 @@ static void test_seal_mprotect_two_vma_with_split(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split as two vma. */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); FAIL_TEST_IF_FALSE(!ret); /* mseal can apply across 2 vma, also split them. */
if (seal)
seal_single_address(ptr + page_size, page_size * 2);
if (seal) {
ret = seal_single_address(ptr + page_size, page_size * 2);
FAIL_TEST_IF_FALSE(!ret);
}
/* the first page is not sealed. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -772,10 +796,13 @@ static void test_seal_mprotect_partial_mprotect(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* seal one page. */
if (seal)
seal_single_address(ptr, page_size);
if (seal) {
ret = seal_single_address(ptr, page_size);
FAIL_TEST_IF_FALSE(!ret);
}
/* mprotect first 2 page will fail, since the first page are sealed. */ ret = sys_mprotect(ptr, 2 * page_size, PROT_READ | PROT_WRITE); @@ -795,6 +822,7 @@ static void test_seal_mprotect_two_vma_with_gap(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -837,6 +865,7 @@ static void test_seal_mprotect_split(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -873,6 +902,7 @@ static void test_seal_mprotect_merge(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split one page. */ ret = sys_mprotect(ptr, page_size, PROT_READ | PROT_WRITE); @@ -906,6 +936,7 @@ static void test_seal_munmap(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -936,6 +967,7 @@ static void test_seal_munmap_two_vma(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect to split */ ret = sys_mprotect(ptr, page_size * 2, PROT_READ | PROT_WRITE); @@ -976,6 +1008,7 @@ static void test_seal_munmap_vma_with_gap(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

ret = sys_munmap(ptr + page_size, page_size * 2); FAIL_TEST_IF_FALSE(!ret); @@ -1007,6 +1040,7 @@ static void test_munmap_start_freed(bool seal) int prot; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* unmap the first page. */ ret = sys_munmap(ptr, page_size); @@ -1045,6 +1079,8 @@ static void test_munmap_end_freed(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* unmap last page. */ ret = sys_munmap(ptr + page_size * 3, page_size); FAIL_TEST_IF_FALSE(!ret);

@@ -1074,6 +1110,8 @@ static void test_munmap_middle_freed(bool seal) int prot; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* unmap 2 pages in the middle. */ ret = sys_munmap(ptr + page_size, page_size * 2); FAIL_TEST_IF_FALSE(!ret);

@@ -1116,6 +1154,7 @@ static void test_seal_mremap_shrink(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1144,6 +1183,7 @@ static void test_seal_mremap_expand(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1); /* ummap last 2 pages. */ ret = sys_munmap(ptr + 2 * page_size, 2 * page_size); FAIL_TEST_IF_FALSE(!ret);

@@ -1175,8 +1215,11 @@ static void test_seal_mremap_move(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newPtr);

clean_single_address(newPtr, size);

FAIL_TEST_IF_FALSE(newPtr != (void *)-1);

ret = clean_single_address(newPtr, size);

FAIL_TEST_IF_FALSE(!ret);

if (seal) { ret = sys_mseal(ptr, size); @@ -1205,6 +1248,7 @@ static void test_seal_mmap_overwrite_prot(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1232,6 +1276,7 @@ static void test_seal_mmap_expand(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1); /* ummap last 4 pages. */ ret = sys_munmap(ptr + 8 * page_size, 4 * page_size); FAIL_TEST_IF_FALSE(!ret);

@@ -1262,6 +1307,7 @@ static void test_seal_mmap_shrink(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1290,7 +1336,9 @@ static void test_seal_mremap_shrink_fixed(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newAddr);

FAIL_TEST_IF_FALSE(newAddr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1319,7 +1367,9 @@ static void test_seal_mremap_expand_fixed(bool seal) void *ret2; setup_single_address(page_size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newAddr);

FAIL_TEST_IF_FALSE(newAddr != (void *)-1);

if (seal) { ret = sys_mseal(newAddr, size); @@ -1348,7 +1398,9 @@ static void test_seal_mremap_move_fixed(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1); setup_single_address(size, &newAddr);

FAIL_TEST_IF_FALSE(newAddr != (void *)-1);

if (seal) { ret = sys_mseal(newAddr, size); @@ -1375,6 +1427,7 @@ static void test_seal_mremap_move_fixed_zero(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1406,6 +1459,7 @@ static void test_seal_mremap_move_dontunmap(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1434,6 +1488,7 @@ static void test_seal_mremap_move_dontunmap_anyaddr(bool seal) void *ret2; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

if (seal) { ret = sys_mseal(ptr, size); @@ -1469,6 +1524,7 @@ static void test_seal_merge_and_split(void) /* (24 RO) */ setup_single_address(24 * page_size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);

/* use mprotect(NONE) to set out boundary */ /* (1 NONE) (22 RO) (1 NONE) */ @@ -1700,9 +1756,12 @@ static void test_seal_discard_ro_anon(bool seal) int ret; setup_single_address(size, &ptr);

FAIL_TEST_IF_FALSE(ptr != (void *)-1);
if (seal)
seal_single_address(ptr, size);
if (seal) {
ret = seal_single_address(ptr, size);
FAIL_TEST_IF_FALSE(!ret);
}
ret = sys_madvise(ptr, size, MADV_DONTNEED); if (seal) @@ -1832,5 +1891,4 @@ int main(int argc, char **argv) test_seal_discard_ro_anon_on_pkey(true); ksft_finished();

return 0;

} diff --git a/tools/testing/selftests/mm/seal_elf.c b/tools/testing/selftests/mm/seal_elf.c index 61a2f1c94e02..7143dc4f1b10 100644 --- a/tools/testing/selftests/mm/seal_elf.c +++ b/tools/testing/selftests/mm/seal_elf.c @@ -12,9 +12,7 @@ #include <errno.h> #include <stdio.h> #include <stdlib.h> -#include <assert.h> #include <fcntl.h> -#include <assert.h> #include <sys/ioctl.h> #include <sys/vfs.h> #include <sys/stat.h> @@ -179,5 +177,4 @@ int main(int argc, char **argv) test_seal_elf(); ksft_finished();

return 0;

}

-- BR, Muhammad Usama Anjum

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jeffxu＠chromium.org
Muhammad Usama Anjum