Piteball/android_kernel_samsung_msm8976
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android_kernel_samsung_msm8976/kernel
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Oleg Nesterov a8822b0e86 ptrace: revert "Prepare to fix racy accesses on task breakpoints" 
This reverts commit bf26c01849 ("Prepare to fix racy accesses on task
breakpoints").

The patch was fine but we can no longer race with SIGKILL after commit
9899d11f65 ("ptrace: ensure arch_ptrace/ptrace_request can never race
with SIGKILL"), the __TASK_TRACED tracee can't be woken up and
->ptrace_bps[] can't go away.

Now that ptrace_get_breakpoints/ptrace_put_breakpoints have no callers,
we can kill them and remove task->ptrace_bp_refcnt.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Prasad <prasad@linux.vnet.ibm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-07-27 22:09:55 +02:00
..
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 perf_pmu_unregister() locking 2019-07-27 21:53:14 +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 PM: convert do_each_thread to for_each_process_thread 2019-07-27 22:09:18 +02:00
rcu
sched sched/core: Fix TASK_DEAD race in finish_task_switch() 2019-07-27 22:09:34 +02:00
time nohz: Fix local_timer_softirq_pending() 2019-07-27 21:52:58 +02:00
trace ring-buffer: Allow for rescheduling when removing pages 2019-07-27 21:51:54 +02:00
.gitignore
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_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
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
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
exit.c ptrace: revert "Prepare to fix racy accesses on task breakpoints" 2019-07-27 22:09:55 +02:00
extable.c kernel/extable.c: mark core_kernel_text notrace 2019-07-27 21:44:25 +02:00
fork.c Revert "android/lowmemorykiller: Ignore tasks with freed mm" 2019-07-27 22:09:48 +02:00
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
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2019-07-27 21:46:18 +02:00
hrtimer.c hrtimer: Ensure POSIX compliance (relative CLOCK_REALTIME hrtimers) 2019-07-27 21:49:51 +02:00
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
itimer.c
jump_label.c
kallsyms.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks Import latest Samsung release 2017-04-18 03:43:52 +02:00
Kconfig.preempt
kexec.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
latencytop.c
Makefile
modsign_pubkey.c
module-internal.h
module.c module: Invalidate signatures on force-loaded modules 2019-07-27 21:42:00 +02:00
module_signing.c
notifier.c
nsproxy.c
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 kernel/params.c: align add_sysfs_param documentation with code 2019-07-27 21:45:35 +02:00
pid.c BACKPORT: FROMLIST: pids: make task_tgid_nr_ns() safe 2018-05-26 00:39:33 +02:00
pid_namespace.c
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 ptrace: revert "Prepare to fix racy accesses on task breakpoints" 2019-07-27 22:09:55 +02:00
range.c
relay.c kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE 2019-07-27 21:49:13 +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 signals: mv {dis,}allow_signal() from sched.h/exit.c to signal.[ch] 2019-07-27 22:09:29 +02:00
smp.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
smpboot.c
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
sysctl.c pipe: reject F_SETPIPE_SZ with size over UINT_MAX 2019-07-27 21:49:46 +02:00
sysctl_binary.c
system_certificates.S
system_keyring.c
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
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: trigger WARN if queue_delayed_work() is called with NULL @wq 2019-07-27 21:45:23 +02:00
workqueue_internal.h