vlib: clib_panic if sysconf() can't determine page size on startup
Account for the potential of sysconf() returning -1 if it can not
get the page size and make it a fatal error.
Coverity: 277313
Type: fix
@@ -103,6 +103,7 @@ void
clib_mem_main_init ()
{
clib_mem_main_t *mm = &clib_mem_main;
+ long sysconf_page_size;
uword page_size;
void *va;
int fd;
@@ -111,7 +112,12 @@ clib_mem_main_init ()
return;
/* system page size */
- page_size = sysconf (_SC_PAGESIZE);
+ sysconf_page_size = sysconf (_SC_PAGESIZE);
+ if (sysconf_page_size < 0)
+ {
+ clib_panic ("Could not determine the page size");
+ }
+ page_size = sysconf_page_size;
mm->log2_page_sz = min_log2 (page_size);
/* default system hugeppage size */
