From: Peter Dinda <pdinda@northwestern.edu>
Date: Tue, 1 Sep 2015 20:21:34 +0000 (-0500)
Subject: Cleanup and sanity-checking of switch issues, negative array indexes, operand indepen... 
X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=commitdiff_plain;h=9e70ba8a6d2bae61d62c99cbab56753cf1440716

Cleanup and sanity-checking of switch issues, negative array indexes, operand independence (Coverity static analysis)
---

diff --git a/linux_module/iface-pwrstat.c b/linux_module/iface-pwrstat.c
index a823946..98ea8c0 100644
--- a/linux_module/iface-pwrstat.c
+++ b/linux_module/iface-pwrstat.c
@@ -109,7 +109,7 @@ static int rapl_check_unit (void)
 	power_unit_divisor = 1 << value;
 
 	/* time unit: 1/time_unit_divisor Seconds */
-	value =(output & TIME_UNIT_MASK) >> TIME_UNIT_OFFSET;
+	value = (output & TIME_UNIT_MASK) >> TIME_UNIT_OFFSET;
 	time_unit_divisor = 1 << value;
 
 	return 0;
diff --git a/linux_module/iface-pwrstat.h b/linux_module/iface-pwrstat.h
index 6d64cc1..eb22df3 100644
--- a/linux_module/iface-pwrstat.h
+++ b/linux_module/iface-pwrstat.h
@@ -41,6 +41,6 @@
 #define ENERGY_UNIT_MASK	0x1F00
 
 #define TIME_UNIT_OFFSET	0x10
-#define TIME_UNIT_MASK		0xF000
+#define TIME_UNIT_MASK		0xF0000
 
 #endif
diff --git a/palacios/src/devices/generic.c b/palacios/src/devices/generic.c
index 23f00ce..1e06a80 100644
--- a/palacios/src/devices/generic.c
+++ b/palacios/src/devices/generic.c
@@ -194,14 +194,19 @@ static int generic_read_port_print_and_passthrough(struct guest_info * core, uin
 
     rc=generic_read_port_passthrough(core,port,src,length,priv_data);
 
-    PrintDebug(core->vm_info, core, " done ... read 0x");
-
-    for (i = 0; i < rc; i++) { 
-	PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]);
+    if (rc<0) { 
+	PrintError(core->vm_info, core, "FAILED\n");
+	return rc;
+    } else {
+	PrintDebug(core->vm_info, core, " done ... read 0x");
+	
+	for (i = 0; i < rc; i++) { 
+	    PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]);
+	}
+	
+	PrintDebug(core->vm_info, core, "\n");
     }
-
-    PrintDebug(core->vm_info, core, "\n");
-
+    
     return rc;
 }
 
diff --git a/palacios/src/palacios/svm.c b/palacios/src/palacios/svm.c
index 6ecdb12..d78a1dc 100644
--- a/palacios/src/palacios/svm.c
+++ b/palacios/src/palacios/svm.c
@@ -1239,7 +1239,7 @@ int v3_is_svm_capable() {
 	
 	PrintDebug(VM_NONE, VCORE_NONE, "SVM_VM_CR_MSR = 0x%x 0x%x\n", vm_cr_high, vm_cr_low);
 	
-	if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 1) {
+	if (vm_cr_low & SVM_VM_CR_MSR_svmdis) {
 	    V3_Print(VM_NONE, VCORE_NONE, "SVM is available but is disabled.\n");
 	    
 	    v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
diff --git a/palacios/src/palacios/vmm_paging.c b/palacios/src/palacios/vmm_paging.c
index 03a158a..6fc880f 100644
--- a/palacios/src/palacios/vmm_paging.c
+++ b/palacios/src/palacios/vmm_paging.c
@@ -1043,6 +1043,7 @@ int v3_drill_guest_pt_32pae(struct guest_info * info, v3_reg_t guest_cr3, addr_t
 	{
 	    case PT_ENTRY_NOT_PRESENT:
 		return -1;
+		break; 
 	    case PT_ENTRY_PAGE:
 		{
 		    pde32pae_t * guest_pde = NULL;
@@ -1062,6 +1063,7 @@ int v3_drill_guest_pt_32pae(struct guest_info * info, v3_reg_t guest_cr3, addr_t
 			{
 			    case PT_ENTRY_NOT_PRESENT:
 				return -1;
+				break;
 			    case PT_ENTRY_LARGE_PAGE:
 				{
 				    addr_t large_page_pa = (addr_t)guest_pte_pa;
@@ -1076,6 +1078,7 @@ int v3_drill_guest_pt_32pae(struct guest_info * info, v3_reg_t guest_cr3, addr_t
 				    }
 				    return 0;
 				}
+				break;
 			    case PT_ENTRY_PAGE:
 				{
 				    pte32pae_t * guest_pte = NULL;
@@ -1106,8 +1109,10 @@ int v3_drill_guest_pt_32pae(struct guest_info * info, v3_reg_t guest_cr3, addr_t
 					return 0;
 				    }
 				}
+				break;
 			}
 		}
+		break;
 	    default:
 		PrintError(info->vm_info, info, "Invalid page type for PD32PAE\n");
 		return -1;
diff --git a/palacios/src/palacios/vmm_perftune.c b/palacios/src/palacios/vmm_perftune.c
index cef9831..0519ce1 100644
--- a/palacios/src/palacios/vmm_perftune.c
+++ b/palacios/src/palacios/vmm_perftune.c
@@ -37,6 +37,7 @@ void     v3_strategy_driven_yield(struct guest_info *core, uint64_t time_since_l
 	    } else {
 		v3_yield(core,-1);
 	    }
+	    break;
 	default:
 	    PrintError(core->vm_info, core, "Unknown yield strategy (%d) using GREEDY\n",core->vm_info->perf_options.yield_strategy.strategy);
 	    v3_yield(core,-1);