fix error handling of mmap() calls (#1283)

2020-06-05 04:30:23 +02:00 · 2020-06-05 04:30:23 +02:00 · a4784cc96c
parent ad80f042c4
commit a4784cc96c
1 changed files with 1 additions and 1 deletions
--- a/qemu/exec.c
+++ b/qemu/exec.c
@ -1154,7 +1154,7 @@ void qemu_ram_remap(struct uc_struct *uc, ram_addr_t addr, ram_addr_t length)
                    area = mmap(vaddr, length, PROT_READ | PROT_WRITE,
                            flags, -1, 0);
                }
-                if (area != vaddr) {
+                if (area == MAP_FAILED || area != vaddr) {
                    fprintf(stderr, "Could not remap addr: "
                            RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n",
                            length, addr);