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authorJames Morris <jmorris@namei.org>2009-09-11 02:04:49 +0400
committerJames Morris <jmorris@namei.org>2009-09-11 02:04:49 +0400
commita3c8b97396ef42edfb845788ba6f53b2a93ce980 (patch)
tree530c5bdbc534618311dab3e0af245835af56db0f /fs/binfmt_elf.c
parent74fca6a42863ffacaf7ba6f1936a9f228950f657 (diff)
parent9f0ab4a3f0fdb1ff404d150618ace2fa069bb2e1 (diff)
downloadlinux-a3c8b97396ef42edfb845788ba6f53b2a93ce980.tar.xz
Merge branch 'next' into for-linus
Diffstat (limited to 'fs/binfmt_elf.c')
-rw-r--r--fs/binfmt_elf.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index b7c1603cd4bd..7c1e65d54872 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -501,22 +501,22 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
}
}
- /*
- * Now fill out the bss section. First pad the last page up
- * to the page boundary, and then perform a mmap to make sure
- * that there are zero-mapped pages up to and including the
- * last bss page.
- */
- if (padzero(elf_bss)) {
- error = -EFAULT;
- goto out_close;
- }
+ if (last_bss > elf_bss) {
+ /*
+ * Now fill out the bss section. First pad the last page up
+ * to the page boundary, and then perform a mmap to make sure
+ * that there are zero-mapped pages up to and including the
+ * last bss page.
+ */
+ if (padzero(elf_bss)) {
+ error = -EFAULT;
+ goto out_close;
+ }
- /* What we have mapped so far */
- elf_bss = ELF_PAGESTART(elf_bss + ELF_MIN_ALIGN - 1);
+ /* What we have mapped so far */
+ elf_bss = ELF_PAGESTART(elf_bss + ELF_MIN_ALIGN - 1);
- /* Map the last of the bss segment */
- if (last_bss > elf_bss) {
+ /* Map the last of the bss segment */
down_write(&current->mm->mmap_sem);
error = do_brk(elf_bss, last_bss - elf_bss);
up_write(&current->mm->mmap_sem);