Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761972AbXEZPxQ (ORCPT ); Sat, 26 May 2007 11:53:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752943AbXEZPxG (ORCPT ); Sat, 26 May 2007 11:53:06 -0400 Received: from py-out-1112.google.com ([64.233.166.178]:23695 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752772AbXEZPxF (ORCPT ); Sat, 26 May 2007 11:53:05 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding; b=PS3h5BayIREGIZ+c04JXDyP1u6nw8OAD4U2sy2M1md5x/0n6PC8HvvsSyvFvfVbkmkwKN35Evg5W+p8xqmNLhsllo4dEh7Z8a/Df2R1vAHWqiH4igkffjYqgQ5bbiKU2VT1xNpnOIKwT56z2avVgBg4sekVF4MVNLMrZmkuDfVg= Message-ID: <465857DF.2020603@gmail.com> Date: Sat, 26 May 2007 11:53:03 -0400 From: Parag Warudkar User-Agent: Thunderbird 2.0.0.0 (Windows/20070326) MIME-Version: 1.0 To: Folkert van Heusden CC: linux-kernel@vger.kernel.org, tglx@linutronix.de Subject: Re: [2.6.21.1] soft lockup when removing netconsole module References: <20070526154011.GB3735@vanheusden.com> In-Reply-To: <20070526154011.GB3735@vanheusden.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1850 Lines: 44 Seems to be hrtimers related - CC'ed Thomas. Parag Folkert van Heusden wrote: > Hi, > > When trying to remove the netconsole module, I got the following kernel > output after a while (couple of minutes iirc): > > [525720.117293] BUG: soft lockup detected on CPU#1! > [525720.117353] [] show_trace_log_lvl+0x1a/0x30 > [525720.117439] [] show_trace+0x12/0x14 > [525720.117526] [] dump_stack+0x16/0x18 > [525720.117613] [] softlockup_tick+0xa6/0xc2 > [525720.117694] [] run_local_timers+0x12/0x14 > [525720.117738] [] update_process_times+0x72/0xa1 > [525720.117744] [] tick_sched_timer+0x53/0xb6 > [525720.117748] [] hrtimer_interrupt+0x189/0x1e3 > [525720.117753] [] local_apic_timer_interrupt+0x55/0x5b > [525720.117761] [] smp_apic_timer_interrupt+0x2a/0x39 > [525720.117766] [] apic_timer_interrupt+0x33/0x38 > [525720.117770] [] mutex_lock+0x8/0xa > [525720.117775] [] flush_workqueue+0x2f/0x8f > [525720.117780] [] cancel_rearming_delayed_workqueue+0x29/0x2b > [525720.117785] [] cancel_rearming_delayed_work+0xf/0x11 > [525720.117790] [] netpoll_cleanup+0x75/0xa5 > [525720.117794] [] cleanup_netconsole+0x17/0x1a [netconsole] > [525720.117804] [] sys_delete_module+0x12f/0x14f > [525720.117809] [] syscall_call+0x7/0xb > [525720.117812] ======================= > > Also the rmmod hangs and would not exit even with kill -9. It also > sucks up 100% cpu. > > > Folkert van Heusden > - 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/