From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Thu, 25 Apr 2019 08:08:52 +0000 (+0200)
Subject: 4.19-stable patches
X-Git-Tag: v3.18.139~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b3d1a1acac38fa721dc480d1cf5e66a992d3d4d0;p=thirdparty%2Fkernel%2Fstable-queue.git

4.19-stable patches

added patches:
	revert-locking-lockdep-add-debug_locks-check-in-__lock_downgrade.patch
---

diff --git a/queue-4.19/revert-locking-lockdep-add-debug_locks-check-in-__lock_downgrade.patch b/queue-4.19/revert-locking-lockdep-add-debug_locks-check-in-__lock_downgrade.patch
new file mode 100644
index 00000000000..7dab62ad1ec
--- /dev/null
+++ b/queue-4.19/revert-locking-lockdep-add-debug_locks-check-in-__lock_downgrade.patch
@@ -0,0 +1,42 @@
+From 7f437eec35a20f40d9ff82ae1c072b211c29e8e0 Mon Sep 17 00:00:00 2001
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Date: Thu, 25 Apr 2019 10:00:43 +0200
+Subject: Revert "locking/lockdep: Add debug_locks check in __lock_downgrade()"
+
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+This reverts commit 0e0f7b30721233ce610bde2395a8e58ff7771475 which was
+commit 71492580571467fb7177aade19c18ce7486267f5 upstream.
+
+Tetsuo rightly points out that the backport here is incorrect, as it
+touches the __lock_set_class function instead of the intended
+__lock_downgrade function.
+
+Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
+Cc: Waiman Long <longman@redhat.com>
+Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
+Cc: Andrew Morton <akpm@linux-foundation.org>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Will Deacon <will.deacon@arm.com>
+Cc: Ingo Molnar <mingo@kernel.org>
+Cc: Sasha Levin <sashal@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ kernel/locking/lockdep.c |    3 ---
+ 1 file changed, 3 deletions(-)
+
+--- a/kernel/locking/lockdep.c
++++ b/kernel/locking/lockdep.c
+@@ -3567,9 +3567,6 @@ __lock_set_class(struct lockdep_map *loc
+ 	unsigned int depth;
+ 	int i;
+ 
+-	if (unlikely(!debug_locks))
+-		return 0;
+-
+ 	depth = curr->lockdep_depth;
+ 	/*
+ 	 * This function is about (re)setting the class of a held lock,
diff --git a/queue-4.19/series b/queue-4.19/series
index 81d1b8e12e8..049f1cadb31 100644
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -94,3 +94,4 @@ percpu-stop-printing-kernel-addresses.patch
 tools-include-adopt-linux-bits.h.patch
 asoc-rockchip-add-missing-interleaved-pcm-attribute.patch
 i2c-hid-properly-terminate-i2c_hid_dmi_desc_override_table-array.patch
+revert-locking-lockdep-add-debug_locks-check-in-__lock_downgrade.patch