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Andrey Ryabinin b17b901f0f x86/kasan: Write protect kasan zero shadow 
commit 063fb3e56f6dd29b2633b678b837e1d904200e6f upstream.

After kasan_init() executed, no one is allowed to write to kasan_zero_page,
so write protect it.

Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/1452516679-32040-3-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-10 09:27:08 +01:00
..
boot KPTI: Rename to PAGE_TABLE_ISOLATION 2018-01-05 15:44:26 +01:00
configs kconfig: tinyconfig: provide whole choice blocks to avoid warnings 2016-09-24 10:07:42 +02:00
crypto crypto: salsa20 - fix blkcipher_walk API usage 2017-12-20 10:04:51 +01:00
entry x86/vdso: Get pvclock data from the vvar VMA instead of the fixmap 2018-01-05 15:44:27 +01:00
ia32 Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-11-03 21:05:40 -08:00
include x86/vdso: Get pvclock data from the vvar VMA instead of the fixmap 2018-01-05 15:44:27 +01:00
kernel x86/vdso: Get pvclock data from the vvar VMA instead of the fixmap 2018-01-05 15:44:27 +01:00
kvm kaiser: enhanced by kernel and user PCIDs 2018-01-05 15:44:25 +01:00
lguest x86/paravirt: Prevent rtc_cmos platform device init on PV guests 2015-12-19 21:35:13 +01:00
lib x86/boot: Add early cmdline parsing for options with arguments 2018-01-05 15:44:23 +01:00
math-emu Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-11-03 21:05:40 -08:00
mm x86/kasan: Write protect kasan zero shadow 2018-01-10 09:27:08 +01:00
net ebpf: migrate bpf_prog's flags to bitfield 2015-10-03 05:02:39 -07:00
oprofile x86/oprofile/ppro: Do not use __this_cpu*() in preemptible context 2017-11-15 17:13:14 +01:00
pci x86/PCI: Make broadcom_postcore_init() check acpi_disabled 2017-12-16 10:33:48 +01:00
platform Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers" 2017-12-16 10:33:57 +01:00
power x86/ldt: Make modify_ldt synchronous 2015-07-31 10:23:23 +02:00
purgatory x86/kexec: add -fno-PIE 2016-11-26 09:54:52 +01:00
ras x86/ras/mce_amd_inj: Inject bank 4 errors on the NBC 2015-10-12 16:15:48 +02:00
realmode
tools x86/tools: Fix gcc-7 warning in relocs.c 2017-07-15 11:57:47 +02:00
um x86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt() 2017-12-09 18:42:40 +01:00
video
xen x86/mm: Enable CR4.PCIDE on supported systems 2018-01-02 20:33:24 +01:00
.gitignore
Kbuild
Kconfig x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code 2018-01-02 20:33:23 +01:00
Kconfig.cpu x86/Kconfig/cpus: Fix/complete CPU type help texts 2015-10-21 11:12:56 +02:00
Kconfig.debug x86: don't make DEBUG_WX default to 'y' even with DEBUG_RODATA 2015-11-06 09:12:41 -08:00
Makefile Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2015-11-04 09:11:12 -08:00
Makefile.um
Makefile_32.cpu