aboutsummaryrefslogtreecommitdiffstats
path: root/tools
diff options
context:
space:
mode:
Diffstat (limited to 'tools')
-rw-r--r--tools/libxc/xc_cpuid_x86.c20
-rw-r--r--tools/libxc/xc_dom_core.c13
-rw-r--r--tools/libxc/xc_dom_elfloader.c2
-rw-r--r--tools/libxc/xc_dom_ia64.c6
-rw-r--r--tools/libxc/xc_dom_x86.c3
-rw-r--r--tools/libxc/xc_domain_restore.c5
-rw-r--r--tools/libxc/xc_linux_osdep.c4
-rw-r--r--tools/libxc/xc_private.c2
-rw-r--r--tools/libxc/xenctrl.h2
9 files changed, 54 insertions, 3 deletions
diff --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c
index 0882ce6554..da435ce513 100644
--- a/tools/libxc/xc_cpuid_x86.c
+++ b/tools/libxc/xc_cpuid_x86.c
@@ -589,6 +589,8 @@ static int xc_cpuid_do_domctl(
static char *alloc_str(void)
{
char *s = malloc(33);
+ if ( s == NULL )
+ return s;
memset(s, 0, 33);
return s;
}
@@ -600,6 +602,8 @@ void xc_cpuid_to_str(const unsigned int *regs, char **strs)
for ( i = 0; i < 4; i++ )
{
strs[i] = alloc_str();
+ if ( strs[i] == NULL )
+ continue;
for ( j = 0; j < 32; j++ )
strs[i][j] = !!((regs[i] & (1U << (31 - j)))) ? '1' : '0';
}
@@ -680,7 +684,7 @@ int xc_cpuid_check(
const char **config,
char **config_transformed)
{
- int i, j;
+ int i, j, rc;
unsigned int regs[4];
memset(config_transformed, 0, 4 * sizeof(*config_transformed));
@@ -692,6 +696,11 @@ int xc_cpuid_check(
if ( config[i] == NULL )
continue;
config_transformed[i] = alloc_str();
+ if ( config_transformed[i] == NULL )
+ {
+ rc = -ENOMEM;
+ goto fail_rc;
+ }
for ( j = 0; j < 32; j++ )
{
unsigned char val = !!((regs[i] & (1U << (31 - j))));
@@ -708,12 +717,14 @@ int xc_cpuid_check(
return 0;
fail:
+ rc = -EPERM;
+ fail_rc:
for ( i = 0; i < 4; i++ )
{
free(config_transformed[i]);
config_transformed[i] = NULL;
}
- return -EPERM;
+ return rc;
}
/*
@@ -758,6 +769,11 @@ int xc_cpuid_set(
}
config_transformed[i] = alloc_str();
+ if ( config_transformed[i] == NULL )
+ {
+ rc = -ENOMEM;
+ goto fail;
+ }
for ( j = 0; j < 32; j++ )
{
diff --git a/tools/libxc/xc_dom_core.c b/tools/libxc/xc_dom_core.c
index a54ddae3d3..3cbf9f791e 100644
--- a/tools/libxc/xc_dom_core.c
+++ b/tools/libxc/xc_dom_core.c
@@ -120,9 +120,17 @@ void *xc_dom_malloc(struct xc_dom_image *dom, size_t size)
{
struct xc_dom_mem *block;
+ if ( size > SIZE_MAX - sizeof(*block) )
+ {
+ DOMPRINTF("%s: unreasonable allocation size", __FUNCTION__);
+ return NULL;
+ }
block = malloc(sizeof(*block) + size);
if ( block == NULL )
+ {
+ DOMPRINTF("%s: allocation failed", __FUNCTION__);
return NULL;
+ }
memset(block, 0, sizeof(*block) + size);
block->next = dom->memblocks;
dom->memblocks = block;
@@ -138,7 +146,10 @@ void *xc_dom_malloc_page_aligned(struct xc_dom_image *dom, size_t size)
block = malloc(sizeof(*block));
if ( block == NULL )
+ {
+ DOMPRINTF("%s: allocation failed", __FUNCTION__);
return NULL;
+ }
memset(block, 0, sizeof(*block));
block->mmap_len = size;
block->mmap_ptr = mmap(NULL, block->mmap_len,
@@ -146,6 +157,7 @@ void *xc_dom_malloc_page_aligned(struct xc_dom_image *dom, size_t size)
-1, 0);
if ( block->mmap_ptr == MAP_FAILED )
{
+ DOMPRINTF("%s: mmap failed", __FUNCTION__);
free(block);
return NULL;
}
@@ -202,6 +214,7 @@ void *xc_dom_malloc_filemap(struct xc_dom_image *dom,
close(fd);
if ( block != NULL )
free(block);
+ DOMPRINTF("%s: failed (on file `%s')", __FUNCTION__, filename);
return NULL;
}
diff --git a/tools/libxc/xc_dom_elfloader.c b/tools/libxc/xc_dom_elfloader.c
index 61b57987ee..be582761d1 100644
--- a/tools/libxc/xc_dom_elfloader.c
+++ b/tools/libxc/xc_dom_elfloader.c
@@ -329,6 +329,8 @@ static elf_errorstatus xc_dom_parse_elf_kernel(struct xc_dom_image *dom)
return rc;
elf = xc_dom_malloc(dom, sizeof(*elf));
+ if ( elf == NULL )
+ return -1;
dom->private_loader = elf;
rc = elf_init(elf, dom->kernel_blob, dom->kernel_size);
xc_elf_set_logfile(dom->xch, elf, 1);
diff --git a/tools/libxc/xc_dom_ia64.c b/tools/libxc/xc_dom_ia64.c
index 7c0eff15d8..076821c19d 100644
--- a/tools/libxc/xc_dom_ia64.c
+++ b/tools/libxc/xc_dom_ia64.c
@@ -188,6 +188,12 @@ int arch_setup_meminit(struct xc_dom_image *dom)
/* setup initial p2m */
dom->p2m_host = xc_dom_malloc(dom, sizeof(xen_pfn_t) * nbr);
+ if ( dom->p2m_host == NULL )
+ {
+ DOMPRINTF("%s: xc_dom_malloc failed for p2m_host",
+ __FUNCTION__);
+ return -1;
+ }
for ( pfn = 0; pfn < nbr; pfn++ )
dom->p2m_host[pfn] = start + pfn;
diff --git a/tools/libxc/xc_dom_x86.c b/tools/libxc/xc_dom_x86.c
index 75d6b8336c..448d9a1e74 100644
--- a/tools/libxc/xc_dom_x86.c
+++ b/tools/libxc/xc_dom_x86.c
@@ -780,6 +780,9 @@ int arch_setup_meminit(struct xc_dom_image *dom)
}
dom->p2m_host = xc_dom_malloc(dom, sizeof(xen_pfn_t) * dom->total_pages);
+ if ( dom->p2m_host == NULL )
+ return -EINVAL;
+
if ( dom->superpages )
{
int count = dom->total_pages >> SUPERPAGE_PFN_SHIFT;
diff --git a/tools/libxc/xc_domain_restore.c b/tools/libxc/xc_domain_restore.c
index 3994f8fd55..f9ed6b2170 100644
--- a/tools/libxc/xc_domain_restore.c
+++ b/tools/libxc/xc_domain_restore.c
@@ -1180,6 +1180,11 @@ static int apply_batch(xc_interface *xch, uint32_t dom, struct restore_ctx *ctx,
/* Map relevant mfns */
pfn_err = calloc(j, sizeof(*pfn_err));
+ if ( pfn_err == NULL )
+ {
+ PERROR("allocation for pfn_err failed");
+ return -1;
+ }
region_base = xc_map_foreign_bulk(
xch, dom, PROT_WRITE, region_mfn, pfn_err, j);
diff --git a/tools/libxc/xc_linux_osdep.c b/tools/libxc/xc_linux_osdep.c
index 787e74285e..98e041cd9f 100644
--- a/tools/libxc/xc_linux_osdep.c
+++ b/tools/libxc/xc_linux_osdep.c
@@ -378,6 +378,8 @@ static void *linux_privcmd_map_foreign_range(xc_interface *xch, xc_osdep_handle
num = (size + XC_PAGE_SIZE - 1) >> XC_PAGE_SHIFT;
arr = calloc(num, sizeof(xen_pfn_t));
+ if ( arr == NULL )
+ return NULL;
for ( i = 0; i < num; i++ )
arr[i] = mfn + i;
@@ -402,6 +404,8 @@ static void *linux_privcmd_map_foreign_ranges(xc_interface *xch, xc_osdep_handle
num_per_entry = chunksize >> XC_PAGE_SHIFT;
num = num_per_entry * nentries;
arr = calloc(num, sizeof(xen_pfn_t));
+ if ( arr == NULL )
+ return NULL;
for ( i = 0; i < nentries; i++ )
for ( j = 0; j < num_per_entry; j++ )
diff --git a/tools/libxc/xc_private.c b/tools/libxc/xc_private.c
index 3e03a91fba..848ceed4e7 100644
--- a/tools/libxc/xc_private.c
+++ b/tools/libxc/xc_private.c
@@ -771,6 +771,8 @@ const char *xc_strerror(xc_interface *xch, int errcode)
errbuf = pthread_getspecific(errbuf_pkey);
if (errbuf == NULL) {
errbuf = malloc(XS_BUFSIZE);
+ if ( errbuf == NULL )
+ return "(failed to allocate errbuf)";
pthread_setspecific(errbuf_pkey, errbuf);
}
diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h
index b7741ca543..89520488e0 100644
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -1778,7 +1778,7 @@ int xc_cpuid_set(xc_interface *xch,
int xc_cpuid_apply_policy(xc_interface *xch,
domid_t domid);
void xc_cpuid_to_str(const unsigned int *regs,
- char **strs);
+ char **strs); /* some strs[] may be NULL if ENOMEM */
int xc_mca_op(xc_interface *xch, struct xen_mc *mc);
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-31 23:37:42 +0000