From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754749Ab3KZGBt (ORCPT ); Tue, 26 Nov 2013 01:01:49 -0500 Received: from mx1.redhat.com ([209.132.183.28]:11941 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753116Ab3KZGBl (ORCPT ); Tue, 26 Nov 2013 01:01:41 -0500 Date: Tue, 26 Nov 2013 01:01:32 -0500 From: Dave Jones To: Linux Kernel , kmo@daterainc.com Subject: Re: GPF in aio_migratepage Message-ID: <20131126060132.GA6400@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , kmo@daterainc.com References: <20131126032645.GA32301@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131126032645.GA32301@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 25, 2013 at 10:26:45PM -0500, Dave Jones wrote: > Hi Kent, > > I hit the GPF below on a tree based on 8e45099e029bb6b369b27d8d4920db8caff5ecce > which has your commit e34ecee2ae791df674dfb466ce40692ca6218e43 > ("aio: Fix a trinity splat"). Is this another path your patch missed, or > a completely different bug to what you were chasing ? And here's another from a different path, this time on 32bit. Oops: 0002 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: tun fuse hidp rfcomm bnep scsi_transport_iscsi l2tp_ppp l2tp_netlink l2tp_core nfc caif_socket caif af_802154 phonet af_rxrpc bluetooth rfkill can_raw can_bcm can llc2 pppoe pppox ppp_generic slhc irda crc_ccitt rds af_key rose x25 atm netrom appletalk ipx p8023 p8022 psnap llc ax25 nouveau video backlight mxm_wmi wmi i2c_algo_bit ttm drm_kms_helper drm i2c_core kvm_intel kvm tg3 ptp pps_core libphy serio_raw pcspkr lpc_ich microcode mfd_core rtc_cmos parport_pc parport shpchp xfs libcrc32c raid0 floppy CPU: 0 PID: 4517 Comm: trinity-child0 Not tainted 3.13.0-rc1+ #6 Hardware name: Dell Inc. Precision WorkStation 490 /0DT031, BIOS A08 04/25/2008 task: ed899630 ti: dea22000 task.ti: dea22000 EIP: 0060:[] EFLAGS: 00010293 CPU: 0 EIP is at aio_migratepage+0xad/0x126 EAX: 00000144 EBX: f6844ed8 ECX: deaf4a84 EDX: 6b6b6b6b ESI: f68dc508 EDI: deaf4800 EBP: dea23bcc ESP: dea23ba8 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 CR0: 8005003b CR2: 6b6b707b CR3: 2c985000 CR4: 000007f0 Stack: 00000000 00000001 deaf4a84 00000286 d709b280 00000000 f68dc508 c11c7955 f6844ed8 dea23c0c c116aa9f 00000001 00000001 c11c7955 c1179a33 00000000 00000000 c114166d f6844ed8 f6844ed8 c1140fc9 dea23c0c 00000000 f6844ed8 Call Trace: [] ? free_ioctx+0x62/0x62 [] move_to_new_page+0x63/0x1bb [] ? free_ioctx+0x62/0x62 [] ? mem_cgroup_prepare_migration+0xc1/0x243 [] ? isolate_migratepages_range+0x3fb/0x675 [] ? isolate_freepages_block+0x316/0x316 [] migrate_pages+0x614/0x72b [] ? isolate_freepages_block+0x316/0x316 [] compact_zone+0x294/0x475 [] try_to_compact_pages+0x129/0x196 [] __alloc_pages_direct_compact+0x91/0x197 [] __alloc_pages_nodemask+0x863/0xa55 [] get_huge_zero_page+0x52/0xf9 [] do_huge_pmd_anonymous_page+0x24e/0x39f [] ? __mem_cgroup_count_vm_event+0xa6/0x191 [] ? __mem_cgroup_count_vm_event+0xbf/0x191 [] handle_mm_fault+0x235/0xd9a [] ? __do_page_fault+0xf8/0x5a1 [] __do_page_fault+0x160/0x5a1 [] ? __do_page_fault+0xf8/0x5a1 [] ? __do_page_fault+0x5a1/0x5a1 [] do_page_fault+0xd/0xf [] error_code+0x6c/0x74 [] ? memcg_update_all_caches+0x23/0x6b [] ? __copy_from_user_ll+0x30/0xdb [] _copy_from_user+0x3f/0x55 [] SyS_setrlimit+0x27/0x50 [] ? SyS_gettimeofday+0x33/0x6d [] ? trace_hardirqs_on_thunk+0xc/0x10 [] sysenter_do_call+0x12/0x32 Code: 6e 8d 8f 84 02 00 00 89 c8 89 4d e4 e8 df bf 3f 00 89 45 e8 89 da 89 f0 e8 99 2b fa ff 8b 43 08 3b 47 54 8b 4d e4 73 06 8b 57 50 <89> 34 82 8b 55 e8 89 c8 e8 aa c1 3f 00 8b 45 ec e8 28 c1 3f 00