Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965058AbWHUFii (ORCPT ); Mon, 21 Aug 2006 01:38:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932605AbWHUFii (ORCPT ); Mon, 21 Aug 2006 01:38:38 -0400 Received: from rune.pobox.com ([208.210.124.79]:27532 "EHLO rune.pobox.com") by vger.kernel.org with ESMTP id S932603AbWHUFih (ORCPT ); Mon, 21 Aug 2006 01:38:37 -0400 Date: Mon, 21 Aug 2006 00:38:33 -0500 From: Nathan Lynch To: Yao Fei Zhu Cc: linux-kernel@vger.kernel.org Subject: Re: BUG: sleeping function called from invalid context at arch/powerpc/kernel/rtas.c:463 Message-ID: <20060821053833.GA9828@localdomain> References: <44E942ED.9010502@cn.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44E942ED.9010502@cn.ibm.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1493 Lines: 37 Hi, Yao Fei Zhu wrote: > Hi, all > > Online and offline cpus in 2.6.18-rc4/PPC64 will trigger Call Trace > like this, > > [root@blade11 ~]# echo 0 > /sys/devices/system/cpu/cpu0/online > [root@blade11 ~]# dmesg -c > BUG: sleeping function called from invalid context at > arch/powerpc/kernel/rtas.c:463 > in_atomic():0, irqs_disabled():1 > Call Trace: > [C0000000725EB9C0] [C00000000000FB70] .show_stack+0x68/0x1b0 (unreliable) > [C0000000725EBA60] [C000000000053EB4] .__might_sleep+0xd8/0xf4 > [C0000000725EBAE0] [C00000000001D5D8] .rtas_busy_delay+0x20/0x5c > [C0000000725EBB70] [C00000000001DC00] .rtas_set_indicator+0x6c/0xcc > [C0000000725EBC10] [C000000000049130] .xics_migrate_irqs_away+0x6c/0x20c > [C0000000725EBCD0] [C000000000048EEC] .pSeries_cpu_disable+0x98/0xb4 > [C0000000725EBD50] [C000000000029A24] .__cpu_disable+0x44/0x58 > [C0000000725EBDC0] [C000000000082030] .take_cpu_down+0x10/0x38 > [C0000000725EBE40] [C000000000090000] .do_stop+0x16c/0x20c > [C0000000725EBEE0] [C000000000078EBC] .kthread+0x128/0x178 > [C0000000725EBF90] [C0000000000271DC] .kernel_thread+0x4c/0x68 The fix for this was committed to Linus's tree after 2.6.18-rc4; look for [POWERPC] Fix might-sleep warning on removing cpus in the change history. - 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/