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Filename Latest commit message Latest commit date
Rik van Riel 0a782dc31f powerpc,mmap: properly account for stack randomization in mmap_base
When RLIMIT_STACK is, for example, 256MB, the current code results in a
gap between the top of the task and mmap_base of 256MB, failing to take
into account the amount by which the stack address was randomized.  In
other words, the stack gets less than RLIMIT_STACK space.

Ensure that the gap between the stack and mmap_base always takes stack
randomization and the stack guard gap into account.

Inspired by Daniel Micay's linux-hardened tree.

Link: http://lkml.kernel.org/r/20170622200033.25714-4-riel@redhat.com
Signed-off-by: Rik van Riel <riel@redhat.com>
Reported-by: Florian Weimer <fweimer@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Daniel Micay <danielmicay@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-12 16:26:03 -07:00
arch powerpc,mmap: properly account for stack randomization in mmap_base 2017-07-12 16:26:03 -07:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-07-11 15:36:52 -07:00
certs
crypto dmaengine updates for 4.13-rc1 2017-07-08 12:36:50 -07:00
Documentation fault-inject: support systematic fault injection 2017-07-12 16:26:01 -07:00
drivers IB/rxe: do not copy extra stack memory to skb 2017-07-12 16:26:03 -07:00
firmware
fs fault-inject: support systematic fault injection 2017-07-12 16:26:01 -07:00
include random,stackprotect: introduce get_random_canary function 2017-07-12 16:26:03 -07:00
init random: do not ignore early device randomness 2017-07-12 16:26:00 -07:00
ipc ipc/util.h: update documentation for ipc_getref() and ipc_putref() 2017-07-12 16:26:02 -07:00
kernel fork,random: use get_random_canary() to set tsk->stack_canary 2017-07-12 16:26:03 -07:00
lib include/linux/string.h: add the option of fortified string.h functions 2017-07-12 16:26:03 -07:00
mm mm/memory.c: mark create_huge_pmd() inline to prevent build failure 2017-07-12 16:25:59 -07:00
net net/netfilter/x_tables.c: use kvmalloc() in xt_alloc_table_info() 2017-07-12 16:26:02 -07:00
samples kfifo: clean up example to not use page_link 2017-07-12 16:26:01 -07:00
scripts scripts/gdb: lx-dmesg: use explicit encoding=utf8 errors=replace 2017-07-12 16:26:01 -07:00
security include/linux/string.h: add the option of fortified string.h functions 2017-07-12 16:26:03 -07:00
sound main drm pull for v4.13 2017-07-09 18:48:37 -07:00
tools test_sysctl: test against int proc_dointvec() array support 2017-07-12 16:26:00 -07:00
usr ramfs: clarify help text that compression applies to ramfs as well as legacy ramdisk. 2017-07-06 16:24:30 -07:00
virt PPC: 2017-07-06 18:38:31 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge branch 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2017-07-12 10:04:56 -07:00
Makefile Kbuild thin archives updates for v4.13 2017-07-07 15:11:12 -07:00
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.