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kernel_google_wahoo/kernel
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Kees Cook 36e8afda0d UPSTREAM: mm/init: Add 'rodata=off' boot cmdline parameter to disable read-only kernel mappings 
It may be useful to debug writes to the readonly sections of memory,
so provide a cmdline "rodata=off" to allow for this. This can be
expanded in the future to support "log" and "write" modes, but that
will need to be architecture-specific.

This also makes KDB software breakpoints more usable, as read-only
mappings can now be disabled on any kernel.

Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Brown <david.brown@linaro.org>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Emese Revfy <re.emese@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathias Krause <minipli@googlemail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: PaX Team <pageexec@freemail.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel-hardening@lists.openwall.com
Cc: linux-arch <linux-arch@vger.kernel.org>
Link: http://lkml.kernel.org/r/1455748879-21872-3-git-send-email-keescook@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

Bug: 31660652
Change-Id: I67b818ca390afdd42ab1c27cb4f8ac64bbdb3b65
(cherry picked from commit d2aa1acad22f1bdd0cfa67b3861800e392254454)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2016-09-23 10:03:59 -07:00
..
bpf
bpf: fix allocation warnings in bpf maps and integer overflow
2015-12-02 23:36:00 -05:00
configs
kconfig: add xenconfig defconfig helper
2015-06-16 11:04:29 +01:00
debug
UPSTREAM: mm/init: Add 'rodata=off' boot cmdline parameter to disable read-only kernel mappings
2016-09-23 10:03:59 -07:00
events
BACKPORT: ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-07-07 16:30:43 -07:00
gcov
gcov: add support for GCC 5.1
2015-06-30 19:44:57 -07:00
irq
genirq: Prevent chip buslock deadlock
2015-12-14 09:45:06 +01:00
livepatch
livepatch: x86: fix relocation computation with kASLR
2015-11-11 17:36:04 +01:00
locking
RFC: FROMLIST: locking/percpu-rwsem: Optimize readers and reduce global impact
2016-08-26 09:37:34 -07:00
power
PM / suspend: Add dependency on RTC_LIB
2016-03-03 10:39:10 -08:00
printk
ARM: Fix "Make low-level printk work" to use a separate config option
2016-02-16 13:54:03 -08:00
rcu
ANDROID: rcu_sync: Export rcu_sync_lockdep_assert
2016-08-31 10:10:44 -07:00
sched
sched: Add Kconfig option DEFAULT_USE_ENERGY_AWARE to set ENERGY_AWARE feature flag
2016-09-21 14:29:06 -07:00
time
BACKPORT: timer: convert timer_slack_ns from unsigned long to u64
2016-07-01 18:12:06 -07:00
trace
trace: fix compilation for 4.1
2016-02-16 13:53:29 -08:00
.gitignore
certs: add .gitignore to stop git nagging about x509_certificate_list
2015-10-21 15:18:35 +01:00
acct.c
…
async.c
…
audit_fsnotify.c
audit: clean simple fsnotify implementation
2015-08-06 16:14:53 -04:00
audit_tree.c
audit: audit_tree_match can be boolean
2015-11-04 08:23:51 -05:00
audit_watch.c
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
2015-09-08 13:34:59 -07:00
audit.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
audit.h
audit: audit_tree_match can be boolean
2015-11-04 08:23:51 -05:00
auditfilter.c
audit: fix comment block whitespace
2015-11-04 08:23:51 -05:00
auditsc.c
UPSTREAM: audit: fix a double fetch in audit_log_single_execve_arg()
2016-09-13 12:44:39 -07:00
backtracetest.c
…
bounds.c
…
capability.c
…
cgroup_freezer.c
cgroup: fix handling of multi-destination migration from subtree_control enabling
2015-12-03 10:18:21 -05:00
cgroup_pids.c
cgroup_pids: don't account for the root cgroup
2015-12-03 10:18:21 -05:00
cgroup.c
RFC: FROMLIST: cgroup: avoid synchronize_sched() in __cgroup_procs_write()
2016-08-26 09:37:43 -07:00
compat.c
compat: cleanup coding in compat_get_bitmap() and compat_put_bitmap()
2015-06-04 23:57:18 +02:00
configs.c
…
context_tracking.c
context_tracking: avoid irq_save/irq_restore on guest entry and exit
2015-11-10 12:06:23 +01:00
cpu_pm.c
kernel/cpu_pm: fix cpu_cluster_pm_exit comment
2015-09-03 02:42:20 +02:00
cpu.c
ANDROID: cpu: send KOBJ_ONLINE event when enabling cpus
2016-06-21 12:58:10 -07:00
cpuset.c
cpuset: Make cpusets restore on hotplug
2016-09-06 15:19:51 -07:00
crash_dump.c
…
cred.c
kernel/cred.c: remove unnecessary kdebug atomic reads
2015-09-10 13:29:01 -07:00
delayacct.c
…
dma.c
…
elfcore.c
…
exec_domain.c
…
exit.c
FIXUP: sched/tune: fix accounting for runnable tasks
2016-08-11 14:26:41 -07:00
extable.c
kernel/extable.c: remove duplicated include
2015-09-10 13:29:01 -07:00
fork.c
RFC: FROMLIST: cgroup: reduce read locked section of cgroup_threadgroup_rwsem during fork
2016-08-26 09:37:56 -07:00
freezer.c
…
futex_compat.c
BACKPORT: ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-07-07 16:30:43 -07:00
futex.c
BACKPORT: ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-07-07 16:30:43 -07:00
groups.c
…
hung_task.c
…
irq_work.c
treewide: Remove old email address
2015-11-23 09:44:58 +01:00
jump_label.c
treewide: Remove old email address
2015-11-23 09:44:58 +01:00
kallsyms.c
…
kcmp.c
BACKPORT: ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-07-07 16:30:43 -07:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
locking/qrwlock: Rename QUEUE_RWLOCK to QUEUED_RWLOCKS
2015-05-12 09:46:00 +02:00
Kconfig.preempt
…
kexec_core.c
kexec: use file name as the output message prefix
2015-11-06 17:50:42 -08:00
kexec_file.c
kexec: use file name as the output message prefix
2015-11-06 17:50:42 -08:00
kexec_internal.h
kexec: split kexec_file syscall code to kexec_file.c
2015-09-10 13:29:01 -07:00
kexec.c
kexec: use file name as the output message prefix
2015-11-06 17:50:42 -08:00
kmod.c
kmod: don't run async usermode helper as a child of kworker thread
2015-10-23 17:55:10 +09:00
kprobes.c
perf/x86/hw_breakpoints: Disallow kernel breakpoints unless kprobe-safe
2015-08-04 10:16:54 +02:00
ksysfs.c
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
kthread.c
kernel/kthread.c:kthread_create_on_node(): clarify documentation
2015-09-04 16:54:41 -07:00
latencytop.c
…
Makefile
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
membarrier.c
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
memremap.c
Merge tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2015-11-10 12:07:22 -08:00
module_signing.c
KEYS: Merge the type-specific data with the payload data
2015-10-21 15:18:36 +01:00
module-internal.h
…
module.c
ftrace/module: Call clean up function when module init fails early
2016-01-07 12:17:39 -05:00
notifier.c
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 08:40:25 -07:00
nsproxy.c
…
padata.c
…
panic.c
Revert "panic: Add board ID to panic output"
2016-08-01 11:17:00 -07:00
params.c
Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
2015-11-09 15:53:39 -08:00
pid_namespace.c
…
pid.c
pidns: fix NULL dereference in __task_pid_nr_ns()
2015-11-24 12:03:55 -08:00
profile.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
ptrace.c
BACKPORT: ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-07-07 16:30:43 -07:00
range.c
…
reboot.c
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
relay.c
kernel/relay.c: use kvfree() in relay_free_page_array()
2015-06-30 19:44:59 -07:00
resource.c
mm: enhance region_is_ram() to region_intersects()
2015-08-10 23:07:05 -04:00
seccomp.c
seccomp, ptrace: add support for dumping seccomp filters
2015-10-27 19:55:13 -07:00
signal.c
kernel/signal.c: unexport sigsuspend()
2015-11-20 16:17:32 -08:00
smp.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
smpboot.c
stop_machine: Kill smp_hotplug_thread->pre_unpark, introduce stop_machine_unpark()
2015-10-20 10:23:55 +02:00
smpboot.h
…
softirq.c
…
stacktrace.c
…
stop_machine.c
kernel: remove stop_machine() Kconfig dependency
2015-12-12 10:15:34 -08:00
sys_ni.c
mm: mlock: add new mlock system call
2015-11-05 19:34:48 -08:00
sys.c
BACKPORT: timer: convert timer_slack_ns from unsigned long to u64
2016-07-01 18:12:06 -07:00
sysctl_binary.c
…
sysctl.c
Merge remote-tracking branch 'linaro-ext/EAS/v4.4-easv5.2+aosp-changes' into android-4.4
2016-09-08 17:07:42 -07:00
task_work.c
task_work: remove fifo ordering guarantee
2015-09-05 13:46:58 -07:00
taskstats.c
…
test_kprobes.c
…
torture.c
torture: Consolidate cond_resched_rcu_qs() into stutter_wait()
2015-10-06 11:25:01 -07:00
tracepoint.c
tracepoint: Give priority to probes of tracepoints
2015-10-25 21:33:54 -04:00
tsacct.c
…
uid16.c
…
up.c
…
user_namespace.c
capabilities: ambient capabilities
2015-09-04 16:54:41 -07:00
user-return-notifier.c
…
user.c
…
utsname_sysctl.c
…
utsname.c
…
watchdog.c
ANDROID: kernel/watchdog: fix unused variable warning
2016-03-01 11:59:55 -08:00
workqueue_internal.h
…
workqueue.c
Merge branch 'for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2015-11-05 14:16:27 -08:00