Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband

[linux-drm-fsl-dcu.git] / fs / binfmt_elf_fdpic.c

diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 6e6d4568d548926880112dd305e51adb8823b86d..5810aa1339fdeb5d6d98dd857328998bcde733e5 100644 (file)
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -234,6 +234,14 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
                                goto error;
                        }
 
+                       /*
+                        * If the binary is not readable then enforce
+                        * mm->dumpable = 0 regardless of the interpreter's
+                        * permissions.
+                        */
+                       if (file_permission(interpreter, MAY_READ) < 0)
+                               bprm->interp_flags |= BINPRM_FLAGS_ENFORCE_NONDUMP;
+
                        retval = kernel_read(interpreter, 0, bprm->buf,
                                             BINPRM_BUF_SIZE);
                        if (retval < 0)
@@ -364,7 +372,7 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
        down_write(&current->mm->mmap_sem);
        current->mm->start_brk = do_mmap(NULL, 0, stack_size,
                                         PROT_READ | PROT_WRITE | PROT_EXEC,
-                                        MAP_PRIVATE | MAP_ANON | MAP_GROWSDOWN,
+                                        MAP_PRIVATE | MAP_ANONYMOUS | MAP_GROWSDOWN,
                                         0);
 
        if (IS_ERR_VALUE(current->mm->start_brk)) {