Adding debian version 4.19.249-2.debian/4.19.249-2debian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/debian/patches-rt/0240-x86-lazy-preempt-properly-check-against-preempt-mask.patch b/debian/patches-rt/0240-x86-lazy-preempt-properly-check-against-preempt-mask.patch
new file mode 100644
index 000000000..df8346c2d
--- /dev/null
+++ b/debian/patches-rt/0240-x86-lazy-preempt-properly-check-against-preempt-mask.patch
@@ -0,0 +1,33 @@
+From 87b957ebbe16c81c7a72161e8d1ab55d0746bd83 Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Mon, 18 Feb 2019 16:57:09 +0100
+Subject: [PATCH 240/347] x86: lazy-preempt: properly check against
+ preempt-mask
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+should_resched() should check against preempt_offset after unmasking the
+need-resched-bit. Otherwise should_resched() won't work for
+preempt_offset != 0 and lazy-preempt set.
+
+Cc: stable-rt@vger.kernel.org
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ arch/x86/include/asm/preempt.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h
+index 22992c837795..f66708779274 100644
+--- a/arch/x86/include/asm/preempt.h
++++ b/arch/x86/include/asm/preempt.h
+@@ -118,7 +118,7 @@ static __always_inline bool should_resched(int preempt_offset)
+ 
+ 	/* preempt count == 0 ? */
+ 	tmp &= ~PREEMPT_NEED_RESCHED;
+-	if (tmp)
++	if (tmp != preempt_offset)
+ 		return false;
+ 	if (current_thread_info()->preempt_lazy_count)
+ 		return false;
+-- 
+2.36.1
+