Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1661763 > unrolled thread

Re: Kernel 3.18.55 compilation fails (missing function declaration)

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: Kernel 3.18.55 compilation fails (missing function declaration) Randy Dunlap <rdunlap@infradead.org> - 2017-06-09 00:20 +0200

#1661763 — Re: Kernel 3.18.55 compilation fails (missing function declaration)

On 06/02/17 06:30, Emmanuel Florac wrote:
> Hi, kernel 3.18.55 compilation fails with this error:
> 
> kernel/fork.c: In function ‘dup_task_struct’:
> kernel/fork.c:341:2: error: implicit declaration of function
> ‘get_random_long’ [-Werror=implicit-function-declaration]
> tsk->stack_canary = get_random_long();
> 
> Corrected by adding the declaration to include/linux/random.h line 26 :
> 
>  unsigned long get_random_long(void);
> 
> Sorry, I really can't understand how to generate a patch from a tagged
> release, my git-fu is far too low...
> 

Should be fixed in 3.18.56 by this commit:


commit 2bc281ebacf969770597fad415547016f0457b53
Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date:   Sat May 27 12:09:37 2017 +0200

    Revert "stackprotector: Increase the per-task stack canary's random range from 32 bits to 64 bits on 64-bit platforms"
    
    This reverts commit 609a3e81550b0b4ea87197b0f59455a7bcff975a which is
    commit 5ea30e4e58040cfd6434c2f33dc3ea76e2c15b05 upstream.
    
    It shouldn't have been backported to 3.18, as we do not have
    get_random_long() in that kernel tree.


-- 
~Randy

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web