Stephen Smalley ab76f7b4ab x86/mm: Set NX on gap between __ex_table and rodata ... Unused space between the end of __ex_table and the start of rodata can be left W+x in the kernel page tables. Extend the setting of the NX bit to cover this gap by starting from text_end rather than rodata_start. Before: ---[ High Kernel Mapping ]--- 0xffffffff80000000-0xffffffff81000000 16M pmd 0xffffffff81000000-0xffffffff81600000 6M ro PSE GLB x pmd 0xffffffff81600000-0xffffffff81754000 1360K ro GLB x pte 0xffffffff81754000-0xffffffff81800000 688K RW GLB x pte 0xffffffff81800000-0xffffffff81a00000 2M ro PSE GLB NX pmd 0xffffffff81a00000-0xffffffff81b3b000 1260K ro GLB NX pte 0xffffffff81b3b000-0xffffffff82000000 4884K RW GLB NX pte 0xffffffff82000000-0xffffffff82200000 2M RW PSE GLB NX pmd 0xffffffff82200000-0xffffffffa0000000 478M pmd After: ---[ High Kernel Mapping ]--- 0xffffffff80000000-0xffffffff81000000 16M pmd 0xffffffff81000000-0xffffffff81600000 6M ro PSE GLB x pmd 0xffffffff81600000-0xffffffff81754000 1360K ro GLB x pte 0xffffffff81754000-0xffffffff81800000 688K RW GLB NX pte 0xffffffff81800000-0xffffffff81a00000 2M ro PSE GLB NX pmd 0xffffffff81a00000-0xffffffff81b3b000 1260K ro GLB NX pte 0xffffffff81b3b000-0xffffffff82000000 4884K RW GLB NX pte 0xffffffff82000000-0xffffffff82200000 2M RW PSE GLB NX pmd 0xffffffff82200000-0xffffffffa0000000 478M pmd Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Kees Cook <keescook@chromium.org> Cc: <stable@vger.kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/1443704662-3138-1-git-send-email-sds@tycho.nsa.gov Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-10-02 09:21:06 +02:00
..
kmemcheck
amdtopology.c
dump_pagetables.c
extable.c
fault.c	x86/vm86: Clean up vm86.h includes	2015-07-31 13:31:10 +02:00
gup.c
highmem_32.c
hugetlbpage.c
init.c	x86/mm/pat: Add comments to cachemode translation tables	2015-08-20 21:26:12 +02:00
init_32.c	libnvdimm for 4.3:	2015-09-08 14:35:59 -07:00
init_64.c	x86/mm: Set NX on gap between __ex_table and rodata	2015-10-02 09:21:06 +02:00
iomap_32.c	Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-06-22 17:59:09 -07:00
ioremap.c	x86/mm: Fix newly introduced printk format warnings	2015-07-24 16:35:33 +02:00
kasan_init_64.c	x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()	2015-08-22 14:54:55 +02:00
kmmio.c
Makefile
mm_internal.h
mmap.c	x86/mpx: Do not set ->vm_ops on MPX VMAs	2015-07-21 07:57:16 +02:00
mmio-mod.c
mpx.c	mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff()	2015-09-10 13:29:01 -07:00
numa.c	mem-hotplug: handle node hole when initializing numa_meminfo.	2015-09-08 15:35:28 -07:00
numa_32.c
numa_64.c
numa_emulation.c
numa_internal.h
pageattr-test.c	x86/mm/pat: Make mm/pageattr[-test].c explicitly non-modular	2015-08-25 09:48:38 +02:00
pageattr.c	x86/mm/pat: Make mm/pageattr[-test].c explicitly non-modular	2015-08-25 09:48:38 +02:00
pat.c	x86/mm/pat: Extend set_page_memtype() to support Write-Through type	2015-06-07 15:28:59 +02:00
pat_internal.h
pat_rbtree.c
pf_in.c
pf_in.h
pgtable.c
pgtable_32.c
physaddr.c
physaddr.h
setup_nx.c
srat.c	x86/mm/srat: Print non-volatile flag in SRAT	2015-09-02 09:33:25 +02:00
testmmiotrace.c
tlb.c	x86, mm: trace when an IPI is about to be sent	2015-09-04 16:54:41 -07:00