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[v1.01][X86] Do not assume that cach and topo structures are non-NULL, which may easily happen in VMs. Add protection against NULL fields in cpu structure

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Dr-Noob
2021-12-03 23:15:23 +01:00
parent 4a9bbef086
commit 4229e2c63b
2 changed files with 50 additions and 27 deletions
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49
src/common/printer.c
View File

@@ -498,22 +498,37 @@ bool print_cpufetch_x86(struct cpuInfo* cpu, STYLE s, struct color** cs, struct
return false;
art->new_intel_logo = choose_new_intel_logo(cpu);
uint32_t socket_num = 1;
char* l1i = NULL;
char *l1d = NULL;
char *l2 = NULL;
char *l3 = NULL;
char* n_cores = NULL;
char* n_cores_dual = NULL;
char* sockets = NULL;
char* uarch = get_str_uarch(cpu);
char* manufacturing_process = get_str_process(cpu);
char* sockets = get_str_sockets(cpu->topo);
char* max_frequency = get_str_freq(cpu->freq);
char* n_cores = get_str_topology(cpu, cpu->topo, false);
char* n_cores_dual = get_str_topology(cpu, cpu->topo, true);
char* cpu_name = get_str_cpu_name(cpu, fcpuname);
char* avx = get_str_avx(cpu);
char* fma = get_str_fma(cpu);
char* l1i = get_str_l1i(cpu->cach);
char* l1d = get_str_l1d(cpu->cach);
char* l2 = get_str_l2(cpu->cach);
char* l3 = get_str_l3(cpu->cach);
char* pp = get_str_peak_performance(cpu->peak_performance);
if(cpu->topo != NULL) {
sockets = get_str_sockets(cpu->topo);
n_cores = get_str_topology(cpu, cpu->topo, false);
n_cores_dual = get_str_topology(cpu, cpu->topo, true);
}
if(cpu->cach != NULL) {
l1i = get_str_l1i(cpu->cach);
l1d = get_str_l1d(cpu->cach);
l2 = get_str_l2(cpu->cach);
l3 = get_str_l3(cpu->cach);
}
setAttribute(art,ATTRIBUTE_NAME,cpu_name);
if(cpu->hv->present) {
setAttribute(art, ATTRIBUTE_HYPERVISOR, cpu->hv->hv_name);
@@ -521,7 +536,8 @@ bool print_cpufetch_x86(struct cpuInfo* cpu, STYLE s, struct color** cs, struct
setAttribute(art,ATTRIBUTE_UARCH,uarch);
setAttribute(art,ATTRIBUTE_TECHNOLOGY,manufacturing_process);
setAttribute(art,ATTRIBUTE_FREQUENCY,max_frequency);
uint32_t socket_num = get_nsockets(cpu->topo);
if(cpu->topo != NULL) {
socket_num = get_nsockets(cpu->topo);
if (socket_num > 1) {
setAttribute(art, ATTRIBUTE_SOCKETS, sockets);
setAttribute(art, ATTRIBUTE_NCORES, n_cores);
@@ -530,14 +546,13 @@ bool print_cpufetch_x86(struct cpuInfo* cpu, STYLE s, struct color** cs, struct
else {
setAttribute(art,ATTRIBUTE_NCORES,n_cores);
}
}
setAttribute(art,ATTRIBUTE_AVX,avx);
setAttribute(art,ATTRIBUTE_FMA,fma);
setAttribute(art,ATTRIBUTE_L1i,l1i);
setAttribute(art,ATTRIBUTE_L1d,l1d);
setAttribute(art,ATTRIBUTE_L2,l2);
if(l3 != NULL) {
setAttribute(art,ATTRIBUTE_L3,l3);
}
if(l1i != NULL) setAttribute(art,ATTRIBUTE_L1i,l1i);
if(l1d != NULL) setAttribute(art,ATTRIBUTE_L1d,l1d);
if(l2 != NULL) setAttribute(art,ATTRIBUTE_L2,l2);
if(l3 != NULL) setAttribute(art,ATTRIBUTE_L3,l3);
setAttribute(art,ATTRIBUTE_PEAK,pp);
const char** attribute_fields = ATTRIBUTE_FIELDS;
@@ -571,8 +586,8 @@ bool print_cpufetch_x86(struct cpuInfo* cpu, STYLE s, struct color** cs, struct
free(art);
if(cs != NULL) free_colors_struct(cs);
free_cache_struct(cpu->cach);
free_topo_struct(cpu->topo);
if(cpu->cach != NULL) free_cache_struct(cpu->cach);
if(cpu->topo != NULL) free_topo_struct(cpu->topo);
free_freq_struct(cpu->freq);
free_cpuinfo_struct(cpu);

14
src/x86/cpuid.c
View File

@@ -278,6 +278,9 @@ struct cpuInfo* get_cpu_info() {
struct cpuInfo* cpu = emalloc(sizeof(struct cpuInfo));
struct features* feat = emalloc(sizeof(struct features));
cpu->feat = feat;
cpu->peak_performance = -1;
cpu->topo = NULL;
cpu->cach = NULL;
bool *ptr = &(feat->AES);
for(uint32_t i = 0; i < sizeof(struct features)/sizeof(bool); i++, ptr++) {
@@ -386,15 +389,20 @@ struct cpuInfo* get_cpu_info() {
cpu->topology_extensions = (ecx >> 22) & 1;
}
// If any field of the struct is NULL,
// return inmideately, as further functions
// require valid fields (cach, topo, etc)
cpu->arch = get_cpu_uarch(cpu);
cpu->freq = get_frequency_info(cpu);
cpu->cach = get_cache_info(cpu);
if(cpu->cach == NULL) return cpu;
cpu->topo = get_topology_info(cpu, cpu->cach);
if(cpu->topo == NULL) return cpu;
cpu->peak_performance = get_peak_performance(cpu, cpu->topo, get_freq(cpu->freq), accurate_pp());
if(cpu->cach == NULL || cpu->topo == NULL) {
return NULL;
}
return cpu;
}