Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752095AbdHITmQ (ORCPT ); Wed, 9 Aug 2017 15:42:16 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:44204 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751932AbdHITmN (ORCPT ); Wed, 9 Aug 2017 15:42:13 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Helge Deller Subject: [PATCH 4.4 01/58] parisc: Increase thread and stack size to 32kb Date: Wed, 9 Aug 2017 12:41:13 -0700 Message-Id: <20170809194146.557693970@linuxfoundation.org> X-Mailer: git-send-email 2.14.0 In-Reply-To: <20170809194146.501519882@linuxfoundation.org> References: <20170809194146.501519882@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1518 Lines: 44 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Helge Deller commit 8f8201dfed91a43ac38c899c82f81eef3d36afd9 upstream. Since kernel 4.11 the thread and irq stacks on parisc randomly overflow the default size of 16k. The reason why stack usage suddenly grew is yet unknown. Signed-off-by: Helge Deller Signed-off-by: Helge Deller Signed-off-by: Greg Kroah-Hartman --- arch/parisc/include/asm/thread_info.h | 2 +- arch/parisc/kernel/irq.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/parisc/include/asm/thread_info.h +++ b/arch/parisc/include/asm/thread_info.h @@ -34,7 +34,7 @@ struct thread_info { /* thread information allocation */ -#define THREAD_SIZE_ORDER 2 /* PA-RISC requires at least 16k stack */ +#define THREAD_SIZE_ORDER 3 /* PA-RISC requires at least 32k stack */ /* Be sure to hunt all references to this down when you change the size of * the kernel stack */ #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) --- a/arch/parisc/kernel/irq.c +++ b/arch/parisc/kernel/irq.c @@ -380,7 +380,7 @@ static inline int eirr_to_irq(unsigned l /* * IRQ STACK - used for irq handler */ -#define IRQ_STACK_SIZE (4096 << 2) /* 16k irq stack size */ +#define IRQ_STACK_SIZE (4096 << 3) /* 32k irq stack size */ union irq_stack_union { unsigned long stack[IRQ_STACK_SIZE/sizeof(unsigned long)];