Fix unchecked malloc calls and casts of malloc return values
In the long term the exit calls should be replaced by returns.
until then this is the correct way to handle failures.
the casts are not needed (in C) and we don't cast malloc return values anywhere else.
Corresponding to flashrom svn r1370.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/flashrom.c b/flashrom.c
index d5892ca..998a18f 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -1513,7 +1513,11 @@
unsigned int usable_erasefunctions = count_usable_erasers(flash);
msg_cinfo("Erasing and writing flash chip... ");
- curcontents = (uint8_t *) malloc(size);
+ curcontents = malloc(size);
+ if (!curcontents) {
+ msg_gerr("Out of memory!\n");
+ exit(1);
+ }
/* Copy oldcontents to curcontents to avoid clobbering oldcontents. */
memcpy(curcontents, oldcontents, size);
@@ -1880,10 +1884,18 @@
goto out_nofree;
}
- oldcontents = (uint8_t *) malloc(size);
+ oldcontents = malloc(size);
+ if (!oldcontents) {
+ msg_gerr("Out of memory!\n");
+ exit(1);
+ }
/* Assume worst case: All bits are 0. */
memset(oldcontents, 0x00, size);
- newcontents = (uint8_t *) malloc(size);
+ newcontents = malloc(size);
+ if (!newcontents) {
+ msg_gerr("Out of memory!\n");
+ exit(1);
+ }
/* Assume best case: All bits should be 1. */
memset(newcontents, 0xff, size);
/* Side effect of the assumptions above: Default write action is erase
diff --git a/hwaccess.c b/hwaccess.c
index efe8bb0..8c89925 100644
--- a/hwaccess.c
+++ b/hwaccess.c
@@ -226,6 +226,10 @@
{ \
struct undo_mmio_write_data *undo_mmio_write_data; \
undo_mmio_write_data = malloc(sizeof(struct undo_mmio_write_data)); \
+ if (!undo_mmio_write_data) { \
+ msg_gerr("Out of memory!\n"); \
+ exit(1); \
+ } \
undo_mmio_write_data->addr = a; \
undo_mmio_write_data->type = mmio_write_type_##c; \
undo_mmio_write_data->c##data = mmio_read##c(a); \
diff --git a/pcidev.c b/pcidev.c
index 1f9a5cc..d4ad8bc 100644
--- a/pcidev.c
+++ b/pcidev.c
@@ -295,6 +295,10 @@
{ \
struct undo_pci_write_data *undo_pci_write_data; \
undo_pci_write_data = malloc(sizeof(struct undo_pci_write_data)); \
+ if (!undo_pci_write_data) { \
+ msg_gerr("Out of memory!\n"); \
+ exit(1); \
+ } \
undo_pci_write_data->dev = *a; \
undo_pci_write_data->reg = b; \
undo_pci_write_data->type = pci_write_type_##c; \
diff --git a/serial.c b/serial.c
index 5cc2fe0..b504974 100644
--- a/serial.c
+++ b/serial.c
@@ -110,6 +110,8 @@
(tolower((unsigned char)dev[1]) == 'o') &&
(tolower((unsigned char)dev[2]) == 'm')) {
dev2 = malloc(strlen(dev) + 5);
+ if (!dev2)
+ sp_die("Error: Out of memory");
strcpy(dev2, "\\\\.\\");
strcpy(dev2 + 4, dev);
}