Messages in this thread | | | From | Arvind Sankar <> | Date | Fri, 22 May 2020 21:51:29 -0400 | Subject | Re: [PATCH] x86/mm/init: Stop printing pgt_buf addresses |
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On Sat, Feb 29, 2020 at 06:11:20PM -0500, Arvind Sankar wrote: > This currently leaks kernel physical addresses into userspace. > > Signed-off-by: Arvind Sankar <nivedita@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 e7bb483557c9..dc4711f09cdc 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++) { > -- > 2.24.1 >
Ping.
https://lore.kernel.org/lkml/20200229231120.1147527-1-nivedita@alum.mit.edu/
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