Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753322Ab0FFIA0 (ORCPT ); Sun, 6 Jun 2010 04:00:26 -0400 Received: from mail-fx0-f46.google.com ([209.85.161.46]:58006 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752593Ab0FFIAY convert rfc822-to-8bit (ORCPT ); Sun, 6 Jun 2010 04:00:24 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:reply-to:to:subject:date:user-agent:cc:references:in-reply-to :mime-version:content-type:content-transfer-encoding:message-id; b=IpwCa8atmB3g/rqi8EvDzZvPGPHwVftCgT032ap1OCjoLPCOC1mlkJzZQm/7IkIuzK sbPvE4GmnzeStmDPvgJxx4SVwXRnE2zXKqQFJ5hD0zvuqkf42HEDFqLb+WS2Nps1Wgmq 7KPOR/+r49ac/ybn5N/fM0C8JhlE9wlqug5rE= From: Maciej Rutecki Reply-To: maciej.rutecki@gmail.com To: Shirish Pargaonkar Subject: Re: wait_even_interruptible_timeout(), signal, spin_lock() = system hang Date: Sun, 6 Jun 2010 10:00:19 +0200 User-Agent: KMail/1.12.4 (Linux/2.6.34; KDE/4.3.4; i686; ; ) Cc: linux-kernel@vger.kernel.org, "linux-fsdevel" References: In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Message-Id: <201006061000.19503.maciej.rutecki@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1748 Lines: 47 I created a Bugzilla entry at https://bugzilla.kernel.org/show_bug.cgi?id=16139 for your bug report, please add your address to the CC list in there, thanks! On piątek, 28 maja 2010 o 18:44:46 Shirish Pargaonkar wrote: > After this sequence of calls, system hangs (smp, x86 box based with > .34 kernel), can ping only. > I have not been able to break in with Alt Sysrq t, working on that > > rc = wait_event_interruptible_timeout(ses->server->response_q, > (midQ->midState != MID_REQUEST_SUBMITTED), > timeout); if (rc < 0) { > cFYI(1, ("command 0x%x interrupted", midQ->command)); > return -1; > } > > and when function that invoking function after coming out with ERESTARTSYS > (I kill the command with Ctrl C) calls > spin_lock(&GlobalMid_Lock); > > system hangs. If I sleep before return -1 (e.g. msleep(1), no hang) > > I do not have to use wait_event_interruptible_timeout and no such problems > with wait_event_timeout, it is only when signal/interrupt is involved, I > run into this problem > > Any pointers/ideas what could be happening, would be really really > appreciated. > > Regards, > > Shirish > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- Maciej Rutecki http://www.maciek.unixy.pl -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/