For security, don't display the kernel's virtual memory layout. Kees Cook points out: "These have been entirely removed on other architectures, so let's just do the same for ia32 and remove it unconditionally." 071929dbdd86 ("arm64: Stop printing the virtual memory layout") 1c31d4e96b8c ("ARM: 8820/1: mm: Stop printing the virtual memory layout") 31833332f798 ("m68k/mm: Stop printing the virtual memory layout") fd8d0ca25631 ("parisc: Hide virtual kernel memory layout") adb1fe9ae2ee ("mm/page_alloc: Remove kernel address exposure in free_reserved_area()") Signed-off-by: Arvind Sankar <nivedita@xxxxxxxxxxxx> --- arch/sh/mm/init.c | 41 ----------------------------------------- 1 file changed, 41 deletions(-) diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index d1b1ff2be17a..e68a1106e99b 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -360,47 +360,6 @@ void __init mem_init(void) vsyscall_init(); mem_init_print_info(NULL); - pr_info("virtual kernel memory layout:\n" - " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n" -#ifdef CONFIG_HIGHMEM - " pkmap : 0x%08lx - 0x%08lx (%4ld kB)\n" -#endif - " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n" - " lowmem : 0x%08lx - 0x%08lx (%4ld MB) (cached)\n" -#ifdef CONFIG_UNCACHED_MAPPING - " : 0x%08lx - 0x%08lx (%4ld MB) (uncached)\n" -#endif - " .init : 0x%08lx - 0x%08lx (%4ld kB)\n" - " .data : 0x%08lx - 0x%08lx (%4ld kB)\n" - " .text : 0x%08lx - 0x%08lx (%4ld kB)\n", - FIXADDR_START, FIXADDR_TOP, - (FIXADDR_TOP - FIXADDR_START) >> 10, - -#ifdef CONFIG_HIGHMEM - PKMAP_BASE, PKMAP_BASE+LAST_PKMAP*PAGE_SIZE, - (LAST_PKMAP*PAGE_SIZE) >> 10, -#endif - - (unsigned long)VMALLOC_START, VMALLOC_END, - (VMALLOC_END - VMALLOC_START) >> 20, - - (unsigned long)memory_start, (unsigned long)high_memory, - ((unsigned long)high_memory - (unsigned long)memory_start) >> 20, - -#ifdef CONFIG_UNCACHED_MAPPING - uncached_start, uncached_end, uncached_size >> 20, -#endif - - (unsigned long)&__init_begin, (unsigned long)&__init_end, - ((unsigned long)&__init_end - - (unsigned long)&__init_begin) >> 10, - - (unsigned long)&_etext, (unsigned long)&_edata, - ((unsigned long)&_edata - (unsigned long)&_etext) >> 10, - - (unsigned long)&_text, (unsigned long)&_etext, - ((unsigned long)&_etext - (unsigned long)&_text) >> 10); - mem_init_done = 1; } -- 2.24.1