From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Cree Subject: Re: Matts tree, IRQ related warning Date: Mon, 01 Nov 2010 20:28:53 +1300 Message-ID: <4CCE6C35.2030706@orcon.net.nz> References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-alpha-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Morten Holst Larsen Cc: linux-alpha@vger.kernel.org, Venkatesh Pallipadi , Peter Zijlstra On 01/11/10 18:58, Morten Holst Larsen wrote: > When I build and run a kernel for my DS15 from Matts tree, I get a warning. > Regardless of the warning everything seems to work ok. > > /Morten > > Linux version 2.6.36+ (root@ds15) (gcc version 4.2.4 (Debian 4.2.4-6)) > #4 Sun Oct 31 12:12:07 CET 2010 > Booting on Titan variation DEFAULT using machine vector TITAN from SRM > Major Options: EV67 MAGIC_SYSRQ > ** SNIP ** > Trying to install interrupt handler for IRQ8 > ------------[ cut here ]------------ > WARNING: at kernel/softirq.c:138 __local_bh_enable+0xac/0xc0() > Modules linked in: > fffffc0001677d60 fffffc000167ceb8 fffffc000103506c 0000000000000200 > 0000000000000008 fffffc0001677e00 0000000001234567 0000000000000000 > fffffc00010354e8 fffffc000169aed0 fffffc00010154a8 fffffc000169aed0 > fffffc00010158a4 fffffc0001686a20 0000000000000000 fffffc0001677e18 > fffffc0001010d70 fffffc0001668e0c fffffc000166ad78 fffffc0001695260 > 0000000000000007 0000000000000000 0000000000000440 0000000000000200 > Trace: > [] __local_bh_enable+0xac/0xc0 > [] irq_enter+0x68/0x80 > [] handle_irq+0x58/0x110 > [] do_entInt+0xc4/0x1d0 > [] ret_from_sys_call+0x0/0x10 > [] irq_to_desc+0x0/0x30 > [] _stext+0x1c/0x20 > ---[ end trace 4eaa2a86a8e2da22 ]--- Yes, I have seen that warning too. It's now present in Linus' tree. I see that commit 75e1056f5 did some work in this area and I am speculating that it (or follow on commits) might be the cause. CCed to the authors of the commit to bring it to their attention. Cheers Michael.