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parisc: Hide virtual kernel memory layout 

For security reasons do not expose the virtual kernel memory layout to
userspace.

Signed-off-by: Helge Deller <deller@gmx.de>
Suggested-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org # 4.15
Reviewed-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Helge Deller 2018-01-12 22:57:15 +01:00
parent 0adb24e03a
commit fd8d0ca256
1 changed files with 6 additions and 1 deletions
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7
arch/parisc/mm/init.c
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@ -629,7 +629,12 @@ void __init mem_init(void)
#endif
mem_init_print_info(NULL);
#ifdef CONFIG_DEBUG_KERNEL /* double-sanity-check paranoia */
#if 0
/*
* Do not expose the virtual kernel memory layout to userspace.
* But keep code for debugging purposes.
*/
printk("virtual kernel memory layout:\n"
" vmalloc : 0x%px - 0x%px (%4ld MB)\n"
" memory : 0x%px - 0x%px (%4ld MB)\n"