The following commit has been merged into the x86/cleanups branch of tip: Commit-ID: 67d631b7c05eff955ccff4139327f0f92a5117e5 Gitweb: https://git.kernel.org/tip/67d631b7c05eff955ccff4139327f0f92a5117e5 Author: Arvind Sankar <nived...@alum.mit.edu> AuthorDate: Sat, 29 Feb 2020 18:11:20 -05:00 Committer: Borislav Petkov <b...@suse.de> CommitterDate: Sat, 23 May 2020 09:34:18 +02:00
x86/mm: Stop printing BRK addresses This currently leaks kernel physical addresses into userspace. Signed-off-by: Arvind Sankar <nived...@alum.mit.edu> Signed-off-by: Borislav Petkov <b...@suse.de> Acked-by: Kees Cook <keesc...@chromium.org> Acked-by: Dave Hansen <dave.han...@intel.com> Link: https://lkml.kernel.org/r/20200229231120.1147527-1-nived...@alum.mit.edu --- arch/x86/mm/init.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 1bba16c..a573a3e 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -121,8 +121,6 @@ __ref void *alloc_low_pages(unsigned int num) } else { pfn = pgt_buf_end; pgt_buf_end += num; - printk(KERN_DEBUG "BRK [%#010lx, %#010lx] PGTABLE\n", - pfn << PAGE_SHIFT, (pgt_buf_end << PAGE_SHIFT) - 1); } for (i = 0; i < num; i++) {
