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Message-ID: <20221103191719.1559407-7-vipinsh@google.com>
Date: Thu, 3 Nov 2022 12:17:18 -0700
From: Vipin Sharma <vipinsh@...gle.com>
To: seanjc@...gle.com, pbonzini@...hat.com, dmatlack@...gle.com
Cc: andrew.jones@...ux.dev, wei.w.wang@...el.com, kvm@...r.kernel.org,
linux-kernel@...r.kernel.org, Vipin Sharma <vipinsh@...gle.com>
Subject: [PATCH v9 6/7] KVM: selftests: Add atoi_positive() and
atoi_non_negative() for input validation
Many KVM selftests take command line arguments which are supposed to be
positive (>0) or non-negative (>=0). Some tests do these validation and
some missed adding the check.
Add atoi_positive() and atoi_non_negative() to validate inputs in
selftests before proceeding to use those values.
Signed-off-by: Vipin Sharma <vipinsh@...gle.com>
Reviewed-by: Sean Christopherson <seanjc@...gle.com>
---
.../selftests/kvm/aarch64/arch_timer.c | 25 ++++---------------
.../selftests/kvm/aarch64/debug-exceptions.c | 2 +-
.../testing/selftests/kvm/aarch64/vgic_irq.c | 2 +-
.../selftests/kvm/access_tracking_perf_test.c | 2 +-
.../selftests/kvm/demand_paging_test.c | 4 +--
.../selftests/kvm/dirty_log_perf_test.c | 12 ++++-----
.../testing/selftests/kvm/include/test_util.h | 16 ++++++++++++
.../selftests/kvm/kvm_page_table_test.c | 4 +--
.../selftests/kvm/max_guest_memory_test.c | 9 +++----
.../kvm/memslot_modification_stress_test.c | 10 +++-----
.../testing/selftests/kvm/memslot_perf_test.c | 22 ++++------------
.../selftests/kvm/set_memory_region_test.c | 2 +-
.../selftests/kvm/x86_64/nx_huge_pages_test.c | 3 +--
13 files changed, 47 insertions(+), 66 deletions(-)
diff --git a/tools/testing/selftests/kvm/aarch64/arch_timer.c b/tools/testing/selftests/kvm/aarch64/arch_timer.c
index 251e7ff04883..9409617fce9c 100644
--- a/tools/testing/selftests/kvm/aarch64/arch_timer.c
+++ b/tools/testing/selftests/kvm/aarch64/arch_timer.c
@@ -414,36 +414,21 @@ static bool parse_args(int argc, char *argv[])
while ((opt = getopt(argc, argv, "hn:i:p:m:")) != -1) {
switch (opt) {
case 'n':
- test_args.nr_vcpus = atoi_paranoid(optarg);
- if (test_args.nr_vcpus <= 0) {
- pr_info("Positive value needed for -n\n");
- goto err;
- } else if (test_args.nr_vcpus > KVM_MAX_VCPUS) {
+ test_args.nr_vcpus = atoi_positive("Number of vCPUs", optarg);
+ if (test_args.nr_vcpus > KVM_MAX_VCPUS) {
pr_info("Max allowed vCPUs: %u\n",
KVM_MAX_VCPUS);
goto err;
}
break;
case 'i':
- test_args.nr_iter = atoi_paranoid(optarg);
- if (test_args.nr_iter <= 0) {
- pr_info("Positive value needed for -i\n");
- goto err;
- }
+ test_args.nr_iter = atoi_positive("Number of iterations", optarg);
break;
case 'p':
- test_args.timer_period_ms = atoi_paranoid(optarg);
- if (test_args.timer_period_ms <= 0) {
- pr_info("Positive value needed for -p\n");
- goto err;
- }
+ test_args.timer_period_ms = atoi_positive("Periodicity", optarg);
break;
case 'm':
- test_args.migration_freq_ms = atoi_paranoid(optarg);
- if (test_args.migration_freq_ms < 0) {
- pr_info("0 or positive value needed for -m\n");
- goto err;
- }
+ test_args.migration_freq_ms = atoi_non_negative("Frequency", optarg);
break;
case 'h':
default:
diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
index 19fffdf19c9f..878c334607e1 100644
--- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
+++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
@@ -423,7 +423,7 @@ int main(int argc, char *argv[])
while ((opt = getopt(argc, argv, "i:")) != -1) {
switch (opt) {
case 'i':
- ss_iteration = atoi_paranoid(optarg);
+ ss_iteration = atoi_positive("Number of iterations", optarg);
break;
case 'h':
default:
diff --git a/tools/testing/selftests/kvm/aarch64/vgic_irq.c b/tools/testing/selftests/kvm/aarch64/vgic_irq.c
index ae90b718070a..4ead42a072b7 100644
--- a/tools/testing/selftests/kvm/aarch64/vgic_irq.c
+++ b/tools/testing/selftests/kvm/aarch64/vgic_irq.c
@@ -824,7 +824,7 @@ int main(int argc, char **argv)
while ((opt = getopt(argc, argv, "hn:e:l:")) != -1) {
switch (opt) {
case 'n':
- nr_irqs = atoi_paranoid(optarg);
+ nr_irqs = atoi_non_negative("Number of IRQs", optarg);
if (nr_irqs > 1024 || nr_irqs % 32)
help(argv[0]);
break;
diff --git a/tools/testing/selftests/kvm/access_tracking_perf_test.c b/tools/testing/selftests/kvm/access_tracking_perf_test.c
index c6bcc5301e2c..a81e7a7ae18f 100644
--- a/tools/testing/selftests/kvm/access_tracking_perf_test.c
+++ b/tools/testing/selftests/kvm/access_tracking_perf_test.c
@@ -368,7 +368,7 @@ int main(int argc, char *argv[])
params.vcpu_memory_bytes = parse_size(optarg);
break;
case 'v':
- params.nr_vcpus = atoi_paranoid(optarg);
+ params.nr_vcpus = atoi_positive("Number of vCPUs", optarg);
break;
case 'o':
overlap_memory_access = true;
diff --git a/tools/testing/selftests/kvm/demand_paging_test.c b/tools/testing/selftests/kvm/demand_paging_test.c
index 82597fb04146..0c98181fa248 100644
--- a/tools/testing/selftests/kvm/demand_paging_test.c
+++ b/tools/testing/selftests/kvm/demand_paging_test.c
@@ -427,8 +427,8 @@ int main(int argc, char *argv[])
p.src_type = parse_backing_src_type(optarg);
break;
case 'v':
- nr_vcpus = atoi_paranoid(optarg);
- TEST_ASSERT(nr_vcpus > 0 && nr_vcpus <= max_vcpus,
+ nr_vcpus = atoi_positive("Number of vCPUs", optarg);
+ TEST_ASSERT(nr_vcpus <= max_vcpus,
"Invalid number of vcpus, must be between 1 and %d", max_vcpus);
break;
case 'o':
diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
index ecda802b78ff..4d639683b8ef 100644
--- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
@@ -416,9 +416,7 @@ int main(int argc, char *argv[])
run_vcpus_while_disabling_dirty_logging = true;
break;
case 'f':
- p.wr_fract = atoi_paranoid(optarg);
- TEST_ASSERT(p.wr_fract >= 1,
- "Write fraction cannot be less than one");
+ p.wr_fract = atoi_positive("Write fraction", optarg);
break;
case 'g':
dirty_log_manual_caps = 0;
@@ -427,7 +425,7 @@ int main(int argc, char *argv[])
help(argv[0]);
break;
case 'i':
- p.iterations = atoi_paranoid(optarg);
+ p.iterations = atoi_positive("Number of iterations", optarg);
break;
case 'm':
guest_modes_cmdline(optarg);
@@ -445,12 +443,12 @@ int main(int argc, char *argv[])
p.backing_src = parse_backing_src_type(optarg);
break;
case 'v':
- nr_vcpus = atoi_paranoid(optarg);
- TEST_ASSERT(nr_vcpus > 0 && nr_vcpus <= max_vcpus,
+ nr_vcpus = atoi_positive("Number of vCPUs", optarg);
+ TEST_ASSERT(nr_vcpus <= max_vcpus,
"Invalid number of vcpus, must be between 1 and %d", max_vcpus);
break;
case 'x':
- p.slots = atoi_paranoid(optarg);
+ p.slots = atoi_positive("Number of slots", optarg);
break;
default:
help(argv[0]);
diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
index feae42863759..3be98e81189a 100644
--- a/tools/testing/selftests/kvm/include/test_util.h
+++ b/tools/testing/selftests/kvm/include/test_util.h
@@ -154,4 +154,20 @@ static inline void *align_ptr_up(void *x, size_t size)
int atoi_paranoid(const char *num_str);
+static inline uint32_t atoi_positive(const char *name, const char *num_str)
+{
+ int num = atoi_paranoid(num_str);
+
+ TEST_ASSERT(num > 0, "%s must be greater than 0, got '%s'", name, num_str);
+ return num;
+}
+
+static inline uint32_t atoi_non_negative(const char *name, const char *num_str)
+{
+ int num = atoi_paranoid(num_str);
+
+ TEST_ASSERT(num >= 0, "%s must be non-negative, got '%s'", name, num_str);
+ return num;
+}
+
#endif /* SELFTEST_KVM_TEST_UTIL_H */
diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c
index ea7feb69bb88..696b366be06b 100644
--- a/tools/testing/selftests/kvm/kvm_page_table_test.c
+++ b/tools/testing/selftests/kvm/kvm_page_table_test.c
@@ -461,8 +461,8 @@ int main(int argc, char *argv[])
p.test_mem_size = parse_size(optarg);
break;
case 'v':
- nr_vcpus = atoi_paranoid(optarg);
- TEST_ASSERT(nr_vcpus > 0 && nr_vcpus <= max_vcpus,
+ nr_vcpus = atoi_positive("Number of vCPUs", optarg);
+ TEST_ASSERT(nr_vcpus <= max_vcpus,
"Invalid number of vcpus, must be between 1 and %d", max_vcpus);
break;
case 's':
diff --git a/tools/testing/selftests/kvm/max_guest_memory_test.c b/tools/testing/selftests/kvm/max_guest_memory_test.c
index 8056dc5831b5..feaf2be20ff2 100644
--- a/tools/testing/selftests/kvm/max_guest_memory_test.c
+++ b/tools/testing/selftests/kvm/max_guest_memory_test.c
@@ -193,16 +193,13 @@ int main(int argc, char *argv[])
while ((opt = getopt(argc, argv, "c:h:m:s:H")) != -1) {
switch (opt) {
case 'c':
- nr_vcpus = atoi_paranoid(optarg);
- TEST_ASSERT(nr_vcpus > 0, "number of vcpus must be >0");
+ nr_vcpus = atoi_positive("Number of vCPUs", optarg);
break;
case 'm':
- max_mem = 1ull * atoi_paranoid(optarg) * SZ_1G;
- TEST_ASSERT(max_mem > 0, "memory size must be >0");
+ max_mem = 1ull * atoi_positive("Memory size", optarg) * SZ_1G;
break;
case 's':
- slot_size = 1ull * atoi_paranoid(optarg) * SZ_1G;
- TEST_ASSERT(slot_size > 0, "slot size must be >0");
+ slot_size = 1ull * atoi_positive("Slot size", optarg) * SZ_1G;
break;
case 'H':
hugepages = true;
diff --git a/tools/testing/selftests/kvm/memslot_modification_stress_test.c b/tools/testing/selftests/kvm/memslot_modification_stress_test.c
index f27f07e4a5cc..3ddf2fb9fa86 100644
--- a/tools/testing/selftests/kvm/memslot_modification_stress_test.c
+++ b/tools/testing/selftests/kvm/memslot_modification_stress_test.c
@@ -156,16 +156,14 @@ int main(int argc, char *argv[])
guest_modes_cmdline(optarg);
break;
case 'd':
- p.delay = atoi_paranoid(optarg);
- TEST_ASSERT(p.delay >= 0,
- "A negative delay is not supported.");
+ p.delay = atoi_non_negative("Delay", optarg);
break;
case 'b':
guest_percpu_mem_size = parse_size(optarg);
break;
case 'v':
- nr_vcpus = atoi_paranoid(optarg);
- TEST_ASSERT(nr_vcpus > 0 && nr_vcpus <= max_vcpus,
+ nr_vcpus = atoi_positive("Number of vCPUs", optarg);
+ TEST_ASSERT(nr_vcpus <= max_vcpus,
"Invalid number of vcpus, must be between 1 and %d",
max_vcpus);
break;
@@ -173,7 +171,7 @@ int main(int argc, char *argv[])
p.partition_vcpu_memory_access = false;
break;
case 'i':
- p.nr_iterations = atoi_paranoid(optarg);
+ p.nr_iterations = atoi_positive("Number of iterations", optarg);
break;
case 'h':
default:
diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c
index 4bae9e3f5ca1..330aaef1c02f 100644
--- a/tools/testing/selftests/kvm/memslot_perf_test.c
+++ b/tools/testing/selftests/kvm/memslot_perf_test.c
@@ -892,33 +892,21 @@ static bool parse_args(int argc, char *argv[],
}
break;
case 'f':
- targs->tfirst = atoi_paranoid(optarg);
- if (targs->tfirst < 0) {
- pr_info("First test to run has to be non-negative\n");
- return false;
- }
+ targs->tfirst = atoi_non_negative("First test", optarg);
break;
case 'e':
- targs->tlast = atoi_paranoid(optarg);
- if (targs->tlast < 0 || targs->tlast >= NTESTS) {
+ targs->tlast = atoi_non_negative("Last test", optarg);
+ if (targs->tlast >= NTESTS) {
pr_info("Last test to run has to be non-negative and less than %zu\n",
NTESTS);
return false;
}
break;
case 'l':
- targs->seconds = atoi_paranoid(optarg);
- if (targs->seconds < 0) {
- pr_info("Test length in seconds has to be non-negative\n");
- return false;
- }
+ targs->seconds = atoi_non_negative("Test length", optarg);
break;
case 'r':
- targs->runs = atoi_paranoid(optarg);
- if (targs->runs <= 0) {
- pr_info("Runs per test has to be positive\n");
- return false;
- }
+ targs->runs = atoi_positive("Runs per test", optarg);
break;
}
}
diff --git a/tools/testing/selftests/kvm/set_memory_region_test.c b/tools/testing/selftests/kvm/set_memory_region_test.c
index c366949c8362..85c16f09a50e 100644
--- a/tools/testing/selftests/kvm/set_memory_region_test.c
+++ b/tools/testing/selftests/kvm/set_memory_region_test.c
@@ -407,7 +407,7 @@ int main(int argc, char *argv[])
#ifdef __x86_64__
if (argc > 1)
- loops = atoi_paranoid(argv[1]);
+ loops = atoi_positive("Number of iterations", argv[1]);
else
loops = 10;
diff --git a/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c b/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c
index 354b6902849c..ea0978f22db8 100644
--- a/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c
+++ b/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c
@@ -241,7 +241,7 @@ int main(int argc, char **argv)
while ((opt = getopt(argc, argv, "hp:t:r")) != -1) {
switch (opt) {
case 'p':
- reclaim_period_ms = atoi_paranoid(optarg);
+ reclaim_period_ms = atoi_non_negative("Reclaim period", optarg);
break;
case 't':
token = atoi_paranoid(optarg);
@@ -257,7 +257,6 @@ int main(int argc, char **argv)
}
TEST_REQUIRE(kvm_has_cap(KVM_CAP_VM_DISABLE_NX_HUGE_PAGES));
- TEST_REQUIRE(reclaim_period_ms > 0);
__TEST_REQUIRE(token == MAGIC_TOKEN,
"This test must be run with the magic token %d.\n"
--
2.38.1.273.g43a17bfeac-goog
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