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| author | Arvind Sankar <nivedita@alum.mit.edu> | 2020-03-01 02:11:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-22 10:05:18 +0300 |
| commit | 7fe5e9153dbb804d7732145a8bd8191da919467d (patch) | |
| tree | 2c23251e41ff132e84b0f8be8ae791b8c44e17bb /arch | |
| parent | 06bd7d87ab25e72a5e9314b5009bd19ae4ca21e0 (diff) | |
| download | linux-7fe5e9153dbb804d7732145a8bd8191da919467d.tar.xz | |
x86/mm: Stop printing BRK addresses
[ Upstream commit 67d631b7c05eff955ccff4139327f0f92a5117e5 ]
This currently leaks kernel physical addresses into userspace.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Link: https://lkml.kernel.org/r/20200229231120.1147527-1-nivedita@alum.mit.edu
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/init.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index fb5f29c60019..b1dba0987565 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -120,8 +120,6 @@ __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++) { |