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Subject[ANNOUNCE] 4.19.106-rt46

Dear RT Folks,

I'm pleased to announce the 4.19.106-rt46 stable release.


You can get this release via the git tree at:

git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

branch: v4.19-rt
Head SHA1: e56eb1424b06c72cd304190c34c2541949dfe41d


Or to build 4.19.106-rt46 directly, the following patches should be applied:

http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.19.tar.xz

http://www.kernel.org/pub/linux/kernel/v4.x/patch-4.19.106.xz

http://www.kernel.org/pub/linux/kernel/projects/rt/4.19/patch-4.19.106-rt46.patch.xz



You can also build from 4.19.106-rt45 by applying the incremental patch:

http://www.kernel.org/pub/linux/kernel/projects/rt/4.19/incr/patch-4.19.106-rt45-rt46.patch.xz



Enjoy,

-- Steve


Changes from v4.19.106-rt45:

---

Steven Rostedt (VMware) (2):
irq_work: Fix checking of IRQ_WORK_LAZY flag set on non PREEMPT_RT
Linux 4.19.106-rt46

Tiejun Chen (1):
lib/ubsan: Remove flags parameter from calls to ubsan_prologue() and ubsan_epilogue()

----
kernel/irq_work.c | 15 ++++++++-------
lib/ubsan.c | 5 ++---
localversion-rt | 2 +-
3 files changed, 11 insertions(+), 11 deletions(-)
---------------------------
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 2940622da5b3..b6d9d35941ac 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -70,6 +70,12 @@ static void __irq_work_queue_local(struct irq_work *work, struct llist_head *lis
arch_irq_work_raise();
}

+static inline bool use_lazy_list(struct irq_work *work)
+{
+ return (IS_ENABLED(CONFIG_PREEMPT_RT_FULL) && !(work->flags & IRQ_WORK_HARD_IRQ))
+ || (work->flags & IRQ_WORK_LAZY);
+}
+
/* Enqueue the irq work @work on the current CPU */
bool irq_work_queue(struct irq_work *work)
{
@@ -81,11 +87,10 @@ bool irq_work_queue(struct irq_work *work)

/* Queue the entry and raise the IPI if needed. */
preempt_disable();
- if (IS_ENABLED(CONFIG_PREEMPT_RT_FULL) && !(work->flags & IRQ_WORK_HARD_IRQ))
+ if (use_lazy_list(work))
list = this_cpu_ptr(&lazy_list);
else
list = this_cpu_ptr(&raised_list);
-
__irq_work_queue_local(work, list);
preempt_enable();

@@ -106,7 +111,6 @@ bool irq_work_queue_on(struct irq_work *work, int cpu)

#else /* CONFIG_SMP: */
struct llist_head *list;
- bool lazy_work, realtime = IS_ENABLED(CONFIG_PREEMPT_RT_FULL);

/* All work should have been flushed before going offline */
WARN_ON_ONCE(cpu_is_offline(cpu));
@@ -116,10 +120,7 @@ bool irq_work_queue_on(struct irq_work *work, int cpu)
return false;

preempt_disable();
-
- lazy_work = work->flags & IRQ_WORK_LAZY;
-
- if (lazy_work || (realtime && !(work->flags & IRQ_WORK_HARD_IRQ)))
+ if (use_lazy_list(work))
list = &per_cpu(lazy_list, cpu);
else
list = &per_cpu(raised_list, cpu);
diff --git a/lib/ubsan.c b/lib/ubsan.c
index 5830cc9a2164..199c75e03469 100644
--- a/lib/ubsan.c
+++ b/lib/ubsan.c
@@ -339,18 +339,17 @@ EXPORT_SYMBOL(__ubsan_handle_type_mismatch_v1);
void __ubsan_handle_vla_bound_not_positive(struct vla_bound_data *data,
void *bound)
{
- unsigned long flags;
char bound_str[VALUE_LENGTH];

if (suppress_report(&data->location))
return;

- ubsan_prologue(&data->location, &flags);
+ ubsan_prologue(&data->location);

val_to_string(bound_str, sizeof(bound_str), data->type, bound);
pr_err("variable length array bound value %s <= 0\n", bound_str);

- ubsan_epilogue(&flags);
+ ubsan_epilogue();
}
EXPORT_SYMBOL(__ubsan_handle_vla_bound_not_positive);

diff --git a/localversion-rt b/localversion-rt
index 38c40b21a885..272158183778 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt45
+-rt46
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