diff options
| -rw-r--r-- | src/mman/mmap.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mman/mmap.c b/src/mman/mmap.c index e99271f7..b56cff86 100644 --- a/src/mman/mmap.c +++ b/src/mman/mmap.c @@ -1,6 +1,7 @@ #include <unistd.h> #include <sys/mman.h> #include <errno.h> +#include <stdint.h> #include <limits.h> #include "syscall.h" #include "libc.h" @@ -20,6 +21,10 @@ void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off) errno = EINVAL; return MAP_FAILED; } + if (len >= PTRDIFF_MAX) { + errno = ENOMEM; + return MAP_FAILED; + } if (flags & MAP_FIXED) __vm_lock(-1); #ifdef SYS_mmap2 ret = (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off>>12); |