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Message-Id: <20210712061003.385713224@linuxfoundation.org>
Date: Mon, 12 Jul 2021 08:06:06 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
"Peter Zijlstra (Intel)" <peterz@...radead.org>,
Joerg Roedel <jroedel@...e.de>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 343/800] lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING
From: Peter Zijlstra <peterz@...radead.org>
[ Upstream commit c0c2c0dad6a06e0c05e9a52d65f932bd54364c97 ]
When PROVE_RAW_LOCK_NESTING=y many of the selftests FAILED because
HARDIRQ context is out-of-bounds for spinlocks. Instead make the
default hardware context the threaded hardirq context, which preserves
the old locking rules.
The wait-type specific locking selftests will have a non-threaded
HARDIRQ variant.
Fixes: de8f5e4f2dc1 ("lockdep: Introduce wait-type checks")
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Tested-by: Joerg Roedel <jroedel@...e.de>
Link: https://lore.kernel.org/r/20210617190313.322096283@infradead.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
lib/locking-selftest.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 2d85abac1744..0f6b262e0964 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -194,6 +194,7 @@ static void init_shared_classes(void)
#define HARDIRQ_ENTER() \
local_irq_disable(); \
__irq_enter(); \
+ lockdep_hardirq_threaded(); \
WARN_ON(!in_irq());
#define HARDIRQ_EXIT() \
--
2.30.2
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