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Merge tag 'v4.9.217' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into odroidg12-4.9.y

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This is the 4.9.217 stable release
This commit is contained in:
Mauro (mdrjr) Ribeiro
2020-04-07 21:33:14 -03:00
parent 628dd0dff5 10a20903d7
commit 1e83c7ea8d
71 changed files with 808 additions and 241 deletions
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4
kernel/cgroup.c
View File

@@ -6341,6 +6341,10 @@ void cgroup_sk_alloc(struct sock_cgroup_data *skcd)
return;
}
/* Don't associate the sock with unrelated interrupted task's cgroup. */
if (in_interrupt())
return;
rcu_read_lock();
while (true) {

23
kernel/signal.c
View File

@@ -373,27 +373,32 @@ __sigqueue_alloc(int sig, struct task_struct *t, gfp_t flags, int override_rlimi
{
struct sigqueue *q = NULL;
struct user_struct *user;
int sigpending;
/*
* Protect access to @t credentials. This can go away when all
* callers hold rcu read lock.
*
* NOTE! A pending signal will hold on to the user refcount,
* and we get/put the refcount only when the sigpending count
* changes from/to zero.
*/
rcu_read_lock();
user = get_uid(__task_cred(t)->user);
atomic_inc(&user->sigpending);
user = __task_cred(t)->user;
sigpending = atomic_inc_return(&user->sigpending);
if (sigpending == 1)
get_uid(user);
rcu_read_unlock();
if (override_rlimit ||
atomic_read(&user->sigpending) <=
task_rlimit(t, RLIMIT_SIGPENDING)) {
if (override_rlimit || likely(sigpending <= task_rlimit(t, RLIMIT_SIGPENDING))) {
q = kmem_cache_alloc(sigqueue_cachep, flags);
} else {
print_dropped_signal(sig);
}
if (unlikely(q == NULL)) {
atomic_dec(&user->sigpending);
free_uid(user);
if (atomic_dec_and_test(&user->sigpending))
free_uid(user);
} else {
INIT_LIST_HEAD(&q->list);
q->flags = 0;
@@ -407,8 +412,8 @@ static void __sigqueue_free(struct sigqueue *q)
{
if (q->flags & SIGQUEUE_PREALLOC)
return;
atomic_dec(&q->user->sigpending);
free_uid(q->user);
if (atomic_dec_and_test(&q->user->sigpending))
free_uid(q->user);
kmem_cache_free(sigqueue_cachep, q);
}

14
kernel/workqueue.c
View File

@@ -1384,14 +1384,16 @@ static void __queue_work(int cpu, struct workqueue_struct *wq,
WARN_ON_ONCE(!is_chained_work(wq)))
return;
retry:
if (req_cpu == WORK_CPU_UNBOUND)
cpu = wq_select_unbound_cpu(raw_smp_processor_id());
/* pwq which will be used unless @work is executing elsewhere */
if (!(wq->flags & WQ_UNBOUND))
pwq = per_cpu_ptr(wq->cpu_pwqs, cpu);
else
if (wq->flags & WQ_UNBOUND) {
if (req_cpu == WORK_CPU_UNBOUND)
cpu = wq_select_unbound_cpu(raw_smp_processor_id());
pwq = unbound_pwq_by_node(wq, cpu_to_node(cpu));
} else {
if (req_cpu == WORK_CPU_UNBOUND)
cpu = raw_smp_processor_id();
pwq = per_cpu_ptr(wq->cpu_pwqs, cpu);
}
/*
* If @work was previously on a different pool, it might still be