Piteball
/
android_kernel_samsung_msm8976
mirror of https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
1
1
Fork 0
Code Issues Projects Releases Wiki Activity
android_kernel_samsung_msm8976/kernel
History
David Herrmann e3609fdb39 mm: allow drivers to prevent new writable mappings 
This patch (of 6):

The i_mmap_writable field counts existing writable mappings of an
address_space.  To allow drivers to prevent new writable mappings, make
this counter signed and prevent new writable mappings if it is negative.
This is modelled after i_writecount and DENYWRITE.

This will be required by the shmem-sealing infrastructure to prevent any
new writable mappings after the WRITE seal has been set.  In case there
exists a writable mapping, this operation will fail with EBUSY.

Note that we rely on the fact that iff you already own a writable mapping,
you can increase the counter without using the helpers.  This is the same
that we do for i_writecount.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Ryan Lortie <desrt@desrt.ca>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2020-10-08 05:52:37 -07:00
..
cpu sched/idle: Add missing checks to the exit condition of cpu_idle_poll() 2019-07-27 21:50:45 +02:00
debug mm: per-thread vma caching 2019-07-27 22:08:06 +02:00
events perf/core: Fix impossible ring-buffer sizes warning 2019-07-27 22:10:22 +02:00
gcov
…
irq This is the 3.10.99 stable release 2017-04-18 17:17:46 +02:00
locking locking/lockdep: Use for_each_process_thread() for debug_show_all_locks() 2019-07-27 22:09:22 +02:00
power workqueues: Introduce new flag WQ_POWER_EFFICIENT for power oriented workqueues 2019-07-27 22:11:01 +02:00
rcu rcu: Do RCU GP kthread self-wakeup from softirq and interrupt 2019-07-27 22:11:18 +02:00
sched sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target 2019-07-27 22:11:08 +02:00
time tick: broadcast-hrtimer: Fix a race in bc_set_next 2019-12-21 20:02:36 +01:00
trace trace: Fix preempt_enable_no_resched() abuse 2019-07-27 22:10:40 +02:00
.gitignore
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks Import latest Samsung release 2017-04-18 03:43:52 +02:00
Kconfig.preempt
…
Makefile UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
acct.c
…
async.c kernel/async.c: revert "async: simplify lowest_in_progress()" 2019-07-27 21:49:48 +02:00
audit.c BACKPORT: audit: consistently record PIDs with task_tgid_nr() 2019-07-27 21:50:56 +02:00
audit.h Import latest Samsung release 2017-04-18 03:43:52 +02:00
audit_tree.c audit: keep inode pinned 2014-11-21 09:22:52 -08:00
audit_watch.c audit: fix use-after-free in audit_add_watch 2019-07-27 21:51:40 +02:00
auditfilter.c
…
auditsc.c BACKPORT: audit: consistently record PIDs with task_tgid_nr() 2019-07-27 21:50:56 +02:00
backtracetest.c
…
bounds.c
…
capability.c CAPABILITIES: remove undefined caps from all processes 2014-09-17 09:03:57 -07:00
cgroup.c cgroup: prefer %pK to %p 2016-12-06 09:24:09 -08:00
cgroup_freezer.c
…
compat.c
…
configs.c
…
context_tracking.c
…
cpu.c cpu: send KOBJ_ONLINE event when enabling cpus 2017-07-24 01:09:04 -07:00
cpu_pm.c cpu_pm: Add level to the cluster pm notification 2015-01-07 22:31:58 -08:00
cpuset.c sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs 2019-07-27 22:08:19 +02:00
crash_dump.c
…
cred.c
…
delayacct.c
…
dma.c
…
elfcore.c
…
exec_domain.c ANDROID: exec_domains: Disable request_module() call for personalities 2016-05-18 14:34:40 +05:30
exit.c wait/ptrace: assume __WALL if the child is traced 2019-07-27 22:09:56 +02:00
extable.c kernel/extable.c: mark core_kernel_text notrace 2019-07-27 21:44:25 +02:00
fork.c mm: allow drivers to prevent new writable mappings 2020-10-08 05:52:37 -07:00
freezer.c freezer: set PF_SUSPEND_TASK flag on tasks that call freeze_processes 2019-07-27 22:09:18 +02:00
futex.c futex: Ensure that futex address is aligned in handle_futex_death() 2019-07-27 22:08:53 +02:00
futex_compat.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-02-25 11:57:47 -08:00
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2019-07-27 21:46:18 +02:00
hrtimer.c hrtimer: Store cpu-number in struct hrtimer_cpu_base 2019-12-21 20:01:04 +01:00
hung_task.c kernel/hung_task.c: change hung_task.c to use for_each_process_thread() 2019-07-27 22:09:21 +02:00
irq_work.c irq_work: Remove BUG_ON in irq_work_run() 2016-01-07 00:42:12 -08:00
itimer.c
…
jump_label.c
…
kallsyms.c kernel: use macros from compiler.h instead of __attribute__((...)) 2019-07-27 22:10:27 +02:00
kcmp.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-02-25 11:57:47 -08:00
kexec.c kernel: use macros from compiler.h instead of __attribute__((...)) 2019-07-27 22:10:27 +02:00
kmod.c
…
kprobes.c
…
ksysfs.c kernel: use macros from compiler.h instead of __attribute__((...)) 2019-07-27 22:10:27 +02:00
kthread.c kthread: Fix the race condition when kthread is parked 2015-06-04 17:43:41 -07:00
latencytop.c
…
modsign_pubkey.c
…
module-internal.h UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
module.c param: hand arguments after -- straight to init 2019-07-27 22:10:44 +02:00
module_signing.c UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
notifier.c
…
nsproxy.c Rename nsproxy.pid_ns to nsproxy.pid_ns_for_children 2019-07-27 22:10:33 +02:00
padata.c padata: avoid race in reordering 2019-07-27 21:44:05 +02:00
panic.c printk: do cond_resched() between lines while outputting to consoles 2019-07-27 21:41:46 +02:00
params.c param: hand arguments after -- straight to init 2019-07-27 22:10:44 +02:00
pid.c kernel/fork.c:copy_process(): don't add the uninitialized child to thread/task/pid lists 2019-07-27 22:10:32 +02:00
pid_namespace.c Rename nsproxy.pid_ns to nsproxy.pid_ns_for_children 2019-07-27 22:10:33 +02:00
posix-cpu-timers.c posix-timers: Sanitize overrun handling 2019-07-27 21:53:21 +02:00
posix-timers.c posix-timers: Sanitize overrun handling 2019-07-27 21:53:21 +02:00
printk.c printk: use rcuidle console tracepoint 2019-07-27 21:44:09 +02:00
profile.c
…
ptrace.c signal/ptrace: Don't leak unitialized kernel memory with PTRACE_PEEK_SIGINFO 2019-07-27 22:11:17 +02:00
range.c
…
relay.c treewide: Fix typo in Documentation/DocBook 2019-07-27 22:10:20 +02:00
res_counter.c
…
resource.c /proc/iomem: only expose physical resource addresses to privileged users 2019-07-27 22:05:58 +02:00
seccomp.c UPSTREAM: seccomp: always propagate NO_NEW_PRIVS on tsync 2019-07-27 21:51:01 +02:00
signal.c kernel: use macros from compiler.h instead of __attribute__((...)) 2019-07-27 22:10:27 +02:00
smp.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
smpboot.c smpboot: use kmemleak_not_leak for smpboot_thread_data 2015-05-11 17:07:29 +05:30
smpboot.h
…
softirq.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
stacktrace.c
…
stop_machine.c
…
sys.c exit.c: unexport __set_special_pids() 2019-07-27 22:09:28 +02:00
sys_ni.c shm: add memfd_create() syscall 2020-10-08 05:52:36 -07:00
sysctl.c kernel/sysctl.c: add missing range check in do_proc_dointvec_minmax_conv 2019-07-27 22:11:27 +02:00
sysctl_binary.c
…
system_certificates.S UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
system_keyring.c UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
task_work.c
…
taskstats.c
…
test_kprobes.c
…
time.c time: Make sure jiffies_to_msecs() preserves non-zero time periods 2019-07-27 21:52:48 +02:00
timeconst.bc
…
timer.c timers: Use proper base migration in add_timer_on() 2019-07-27 21:42:23 +02:00
tracepoint.c tracing: syscall_regfunc() should not skip kernel threads 2019-07-27 22:09:17 +02:00
tsacct.c
…
uid16.c kernel: make groups_sort calling a responsibility group_info allocators 2019-07-27 21:46:18 +02:00
up.c
…
user-return-notifier.c
…
user.c userns: Add a knob to disable setgroups on a per user namespace basis 2015-01-08 09:58:16 -08:00
user_namespace.c userns: move user access out of the mutex 2019-07-27 21:51:26 +02:00
utsname.c
…
utsname_sysctl.c
…
watchdog.c
…
workqueue.c workqueue: Add system wide power_efficient workqueues 2019-07-27 22:11:01 +02:00
workqueue_internal.h
…