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ARM: 9320/1: fix stack depot IRQ stack filter

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[ Upstream commit b015001487 ]

Place IRQ handlers such as gic_handle_irq() in the irqentry section even
if FUNCTION_GRAPH_TRACER is not enabled.  Without this, the stack
depot's filter_irq_stacks() does not correctly filter out IRQ stacks in
those configurations, which hampers deduplication and eventually leads
to "Stack depot reached limit capacity" splats with KASAN.

A similar fix was done for arm64 in commit f6794950f0
("arm64: set __exception_irq_entry with __irq_entry as a default").

Link: https://lore.kernel.org/r/20230803-arm-irqentry-v1-1-8aad8e260b1c@axis.com

Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vincent Whitchurch 2023-08-21 08:45:21 +01:00 committed by Greg Kroah-Hartman
parent 7467ca10a5
commit 953ed26a77
1 changed files with 0 additions and 4 deletions
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4
arch/arm/include/asm/exception.h
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@ -10,10 +10,6 @@
#include <linux/interrupt.h>
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
#define __exception_irq_entry __irq_entry
#else
#define __exception_irq_entry
#endif
#endif /* __ASM_ARM_EXCEPTION_H */