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exec: setup_arg_pages() fails to return errors

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In setup_arg_pages we work hard to assign a value to ret, but on exit we
always return 0.

Also remove a now duplicated exit path and branch to out_unlock instead.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anton Blanchard 2009-11-11 14:26:48 -08:00 committed by Linus Torvalds
parent 93f40e6f14
commit fc63cf2370
1 changed files with 3 additions and 5 deletions
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8
fs/exec.c
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@ -624,10 +624,8 @@ int setup_arg_pages(struct linux_binprm *bprm,
/* Move stack pages down in memory. */ /* Move stack pages down in memory. */
if (stack_shift) { if (stack_shift) {
ret = shift_arg_pages(vma, stack_shift); ret = shift_arg_pages(vma, stack_shift);
if (ret) { if (ret)
up_write(&mm->mmap_sem); goto out_unlock;
return ret;
}
} }
#ifdef CONFIG_STACK_GROWSUP #ifdef CONFIG_STACK_GROWSUP
@ -641,7 +639,7 @@ int setup_arg_pages(struct linux_binprm *bprm,
out_unlock: out_unlock:
up_write(&mm->mmap_sem); up_write(&mm->mmap_sem);
return 0; return ret;
} }
EXPORT_SYMBOL(setup_arg_pages); EXPORT_SYMBOL(setup_arg_pages);