eal/windows: fix out-of-memory check
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Commit Message
Check vsnprintf() result to prevent calling malloc() with negative size.
Check actual malloc() result and terminate asprintf() with documented
error code to prevent the use of NULL pointer.
Fixes: e8428a9d8 ("eal/windows: add some basic functions and macros")
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
---
lib/librte_eal/windows/eal/include/rte_os.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
@@ -66,10 +66,12 @@ asprintf(char **buffer, const char *format, ...)
va_start(arg, format);
size = vsnprintf(NULL, 0, format, arg) + 1;
va_end(arg);
+ if (size < 0)
+ return -1;
*buffer = malloc(size);
- if (buffer == NULL)
- printf("Cannot allocate memory");
+ if (*buffer == NULL)
+ return -1;
va_start(arg, format);
ret = vsnprintf(*buffer, size, format, arg);