Thomas Gleixner 752d01704a x86/cpu_entry_area: Prevent wraparound in setup_cpu_entry_area_ptes() on 32bit ...

commit f6c4fd506c upstream.

The loop which populates the CPU entry area PMDs can wrap around on 32bit
machines when the number of CPUs is small.

It worked wonderful for NR_CPUS=64 for whatever reason and the moron who
wrote that code did not bother to test it with !SMP.

Check for the wraparound to fix it.

Fixes: 92a0f81d89 ("x86/cpu_entry_area: Move it out of the fixmap")
Reported-by: kernel test robot <fengguang.wu@intel.com>
Signed-off-by: Thomas "Feels stupid" Gleixner <tglx@linutronix.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-12-29 17:53:45 +01:00

..

alpha

Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2017-11-02 10:04:46 -07:00

arc

Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2017-11-02 10:04:46 -07:00

arm

linux/compiler.h: Split into compiler.h and compiler_types.h

2017-12-25 14:26:33 +01:00

arm64

ACPI / APEI: Replace ioremap_page_range() with fixmap

2017-12-25 14:26:20 +01:00

blackfin

pinctrl: adi2: Fix Kconfig build problem

2017-12-20 10:10:34 +01:00

c6x

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

cris

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02 11:19:54 +01:00

frv

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

h8300

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02 11:19:54 +01:00

hexagon

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

ia64

Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-11-05 12:14:50 -08:00

m32r

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

m68k

m68k: fix ColdFire node shift size calculation

2017-12-10 13:40:39 +01:00

metag

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

microblaze

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

mips

fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall

2017-12-17 15:07:59 +01:00

mn10300

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

nios2

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

openrisc

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

parisc

fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall

2017-12-17 15:07:59 +01:00

powerpc

arch, mm: Allow arch_dup_mmap() to fail

2017-12-29 17:53:43 +01:00

s390

bpf, s390x: do not reload skb pointers in non-skb context

2017-12-25 14:26:31 +01:00

score

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02 11:19:54 +01:00

sh

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

sparc

linux/compiler.h: Split into compiler.h and compiler_types.h

2017-12-25 14:26:33 +01:00

tile

fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall

2017-12-17 15:07:59 +01:00

um

arch, mm: Allow arch_dup_mmap() to fail

2017-12-29 17:53:43 +01:00

unicore32

arch, mm: Allow arch_dup_mmap() to fail

2017-12-29 17:53:43 +01:00

x86

x86/cpu_entry_area: Prevent wraparound in setup_cpu_entry_area_ptes() on 32bit

2017-12-29 17:53:45 +01:00

xtensa

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

.gitignore

…

Kconfig

kprobes: Use synchronize_rcu_tasks() for optprobe with CONFIG_PREEMPT=y

2017-12-10 13:40:40 +01:00