linux-kernel - [RFC PATCH 0/3] irq: Fix stack overflow due to softirq called on current stack

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Date:	Thu,  5 Sep 2013 17:33:21 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@....ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	James Hogan <james.hogan@...tec.com>,
	"James E.J. Bottomley" <jejb@...isc-linux.org>,
	Helge Deller <deller@....de>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [RFC PATCH 0/3] irq: Fix stack overflow due to softirq called on current stack 

Hi,

This series is a proposition to fix the crash reported here: http://lkml.kernel.org/r/1378330796.4321.50.camel%40pasglop
And it has the upside to also consolidate a bit the arch do_softirq overriden implementation.

Only tested in x86-64 for now.

Thanks.

Frederic Weisbecker (3):
  irq: Consolidate do_softirq() arch overriden implementations
  irq: Execute softirq on its own stack on irq exit
  irq: Comment on the use of inline stack for ksoftirq

 arch/metag/kernel/irq.c    |   56 +++++++++++++++++------------------------
 arch/parisc/kernel/irq.c   |   17 +-----------
 arch/powerpc/kernel/irq.c  |   17 +-----------
 arch/s390/kernel/irq.c     |   52 +++++++++++++++----------------------
 arch/sh/kernel/irq.c       |   60 ++++++++++++++++++-------------------------
 arch/sparc/kernel/irq_64.c |   31 +++++++---------------
 arch/x86/kernel/irq_32.c   |   34 +++++++++----------------
 arch/x86/kernel/irq_64.c   |   18 ++-----------
 include/linux/interrupt.h  |   11 ++++++++
 kernel/softirq.c           |   10 +++----
 10 files changed, 112 insertions(+), 194 deletions(-)

-- 
1.7.5.4

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