Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750726AbWC0K6I (ORCPT ); Mon, 27 Mar 2006 05:58:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750817AbWC0K6H (ORCPT ); Mon, 27 Mar 2006 05:58:07 -0500 Received: from ns.virtualhost.dk ([195.184.98.160]:54304 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S1750726AbWC0K6H (ORCPT ); Mon, 27 Mar 2006 05:58:07 -0500 Date: Mon, 27 Mar 2006 12:58:11 +0200 From: Jens Axboe To: Brandon Low Cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: 2.6.16-mm1 Message-ID: <20060327105811.GG8186@suse.de> References: <20060324021729.GL27559@lostlogicx.com> <20060323182411.7f80b4a6.akpm@osdl.org> <20060324024540.GM27559@lostlogicx.com> <20060323185810.3bf2a4ce.akpm@osdl.org> <20060324032126.GN27559@lostlogicx.com> <20060324033934.161302c1.akpm@osdl.org> <20060324125817.GB3381@lostlogicx.com> <20060324103301.4e6c5a4b.akpm@osdl.org> <20060324183734.GC4173@suse.de> <20060324191506.GC3381@lostlogicx.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060324191506.GC3381@lostlogicx.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3027 Lines: 66 On Fri, Mar 24 2006, Brandon Low wrote: > I recreated the oops with an untainted kernel, but didn't manage to copy that one down. > > Brandon > > usb 1-8: USB disconnect, address 6 > BUG: unable to handle kernel NULL pointer dereference at virtual address 00000102 > printing eip: > c023e447 > *pde = 00000000 > Oops: 0000 [#1] > SMP > last sysfs file: /block/sda/sda2/size > Modules linked in: nls_cp437 deadline_iosched sd_mod vfat fat wlan_tkip wlan_scan_sta ath_pci ath_rate_sample wlan ath_hal w83627hf > hwmon_vid eeprom i2c_isa i2c_ali1563 i2c_core snd_pcm_oss snd_mixer_oss snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_ali5451 snd_ac97_codec > +snd_ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc rtc pcspkr > CPU: 1 > EIP: 0060:[] Tainted: PF VLI > EFLAGS: 00010046 (2.6.16-mm1 #1) > EIP is at cfq_exit_single_io_context+0x27/0x110 > eax: 00000086 ebx: f7dcc124 ecx: f7dcc124 edx: f7dcc124 > esi: f645b200 edi: 00000006 ebp: 0000000f esp: f6a99e44 > ds: 007b es: 007b ss: 0068 > Process hald-addon-stor (pid: 11786, threadinfo=f6a99000 task=f6546030) > Stack: <0>f65460e8 00000001 f6c1c070 f6546030 f7dcc124 00000282 c1b4d384 c023e55a > f7dcc124 f6a99000 00000286 c02398c7 c1b4d384 c18de960 f6546030 c1b4d384 > c01213f6 f6546030 c0452b40 f654649c f6a99f24 00000001 f7e66500 f6a99000 > Call Trace: > cfq_exit_io_context+0x2a/0x50 exit_io_context+0x87/0xb0 > do_exit+0x2a6/0x460 do_group_exit+0x3c/0x90 > get_signal_to_deliver+0x229/0x300 do_signal+0x69/0x160 > ktime_get_ts+0x5e/0x70 copy_to_user+0x42/0x60 > hrtimer_nanosleep+0xce/0x150 nanosleep_wakeup+0x0/0x20 > sys_nanosleep+0x67/0x70 do_notify_resume+0x38/0x3c > work_notifysig+0x13/0x19 > Code: 00 00 00 00 83 ec 1c 89 5c 24 10 8b 5c 24 20 89 74 24 14 89 7c 24 18 8b 73 10 85 f6 74 65 8b 3e 9c 58 f6 c4 02 0f 85 82 00 00 > 00 <8b> 87 fc 00 00 00 e8 0e 3b 15 00 8b 43 14 85 c0 75 57 8b 43 18 > <1>Fixing recursive fault but reboot is needed! Hmm, no luck reproducing this so far, strange. I'm using 2.6.16-block.git cfq branch exclusively, which is the patch you backed out. I guess I'll try 2.6.16-mm1 on the same box next. Can you try 2.6.16-mm1 with this patch applied on top? diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 81edf51..89fcc2c 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1516,6 +1516,7 @@ cfq_cic_rb_add(struct cfq_data *cfqd, st rb_link_node(&cic->rb_node, parent, p); rb_insert_color(&cic->rb_node, &ioc->cic_root); + list_add(&cic->queue_list, &cfqd->cic_list); read_unlock(&cfq_exit_lock); } -- Jens Axboe - 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/