linux-kernel - Re: Linux 3.18.55

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Date:   Thu, 25 May 2017 20:32:19 +0200
From:   Philip Müller <philm@...jaro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: Linux 3.18.55

Hi there,

adding following patch[1] will result in following error on 32bit host:

  CC [M]  arch/x86/crypto/twofish_glue.o
  AS [M]  arch/x86/crypto/salsa20-i586-asm_32.o
  CC      fs/open.o
kernel/fork.c: In function ‘dup_task_struct’:
kernel/fork.c:341:22: error: implicit declaration of function
‘get_random_long’ [-Werror=implicit-function-declaration]
  tsk->stack_canary = get_random_long();
                      ^~~~~~~~~~~~~~~
  CC      fs/read_write.o
...
  LD      security/integrity/built-in.o
cc1: some warnings being treated as errors
make[1]: *** [scripts/Makefile.build:257: kernel/fork.o] Error 1
make[1]: *** Waiting for unfinished jobs....
  CC      security/keys/gc.o
  CC      ipc/ipcns_notifier.o

[1]
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-3.18/stackprotector-increase-the-per-task-stack-canary-s-random-range-from-32-bits-to-64-bits-on-64-bit-platforms.patch