linux-kernel - linux-next: build failure after merge of the akpm-current tree

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Date:   Wed, 17 Apr 2019 16:53:21 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        Alexey Dobriyan <adobriyan@...il.com>
Subject: linux-next: build failure after merge of the akpm-current tree

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

fs/binfmt_elf.c: In function 'load_elf_binary':
fs/binfmt_elf.c:1140:7: error: 'elf_interpreter' undeclared (first use in this function); did you mean 'interpreter'?
  if (!elf_interpreter)
       ^~~~~~~~~~~~~~~
       interpreter


Caused by commit

  3ebf0dd657ce ("fs/binfmt_elf.c: move brk out of mmap when doing direct loader exec")

interacting with commit

  a34f642bccf1 ("fs/binfmt_elf.c: free PT_INTERP filename ASAP")

I have applied the following patch for today.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Wed, 17 Apr 2019 16:48:29 +1000
Subject: [PATCH] fix "fs/binfmt_elf.c: move brk out of mmap when doing direct loader exec"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 fs/binfmt_elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index b3bbe6bca499..fe5668a1bbaa 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1137,7 +1137,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
 	 * collide early with the stack growing down), and into the unused
 	 * ELF_ET_DYN_BASE region.
 	 */
-	if (!elf_interpreter)
+	if (!interpreter)
 		current->mm->brk = current->mm->start_brk = ELF_ET_DYN_BASE;
 
 	if ((current->flags & PF_RANDOMIZE) && (randomize_va_space > 1)) {
-- 
2.20.1

-- 
Cheers,
Stephen Rothwell

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