From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ee0-f48.google.com (mail-ee0-f48.google.com [74.125.83.48]) by kanga.kvack.org (Postfix) with ESMTP id BDE9F6B0031 for ; Wed, 11 Dec 2013 10:40:46 -0500 (EST) Received: by mail-ee0-f48.google.com with SMTP id e49so2952152eek.35 for ; Wed, 11 Dec 2013 07:40:46 -0800 (PST) Received: from mx2.suse.de (cantor2.suse.de. [195.135.220.15]) by mx.google.com with ESMTP id l44si19571712eem.229.2013.12.11.07.40.45 for ; Wed, 11 Dec 2013 07:40:45 -0800 (PST) Message-ID: <52A8877A.10209@suse.cz> Date: Wed, 11 Dec 2013 16:40:42 +0100 From: Vlastimil Babka MIME-Version: 1.0 Subject: Re: oops in pgtable_trans_huge_withdraw References: <20131206210254.GA7962@redhat.com> In-Reply-To: <20131206210254.GA7962@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Dave Jones , Linux Kernel , linux-mm@kvack.org, kirill.shutemov@linux.intel.com, Sasha Levin On 12/06/2013 10:02 PM, Dave Jones wrote: > I've spent a few days enhancing trinity's use of mmap's, trying to make it > reproduce https://lkml.org/lkml/2013/12/4/499 FYI, I managed to reproduce that using trinity today, trinity was from git at commit e8912cc which is from Dec 09 so I guess your enhancements were already there? kernel was linux-next-20131209 I was running trinity -c mmap -c munmap -c mremap -c remap_file_pages -c mlock -c munlock Now I'm running with Kirill's patch, will post results later. My goal was to reproduce Sasha Levin's BUG in munlock_vma_pages_range https://lkml.org/lkml/2013/12/7/130 Perhaps it could be related as well. Sasha, do you know at which commit your trinity clone was at? Thanks, Vlastimil > Instead, I hit this.. related ? > > Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC > Modules linked in: tun snd_seq_dummy rfcomm fuse hidp bnep can_raw caif_socket caif phonet af_rxrpc llc2 af_key rose netrom pppoe pppox ppp_generic slhc scsi_transport_iscsi bluetooth nfnetlink can_bcm can af_802154 ipt_ULOG nfc irda crc_ccitt rds x25 atm appletalk ipx p8023 psnap p8022 llc ax25 cfg80211 rfkill xfs snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_page_alloc libcrc32c snd_timer e1000e snd coretemp hwmon ptp x86_pkg_temp_thermal shpchp serio_raw pps_core kvm_intel pcspkr kvm crct10dif_pclmul crc32c_intel usb_debug ghash_clmulni_intel soundcore microcode > CPU: 3 PID: 11758 Comm: trinity-child3 Not tainted 3.13.0-rc2+ #23 > task: ffff8800719415d0 ti: ffff8801cfa74000 task.ti: ffff8801cfa74000 > RIP: 0010:[] [] pgtable_trans_huge_withdraw+0x55/0xc0 > RSP: 0000:ffff8801cfa75ac8 EFLAGS: 00010206 > RAX: 00000000060e4800 RBX: 0000000000000000 RCX: 0000000000000027 > RDX: 0000000000000000 RSI: ffff880183920000 RDI: ffff880183920000 > RBP: ffff8801cfa75ae8 R08: ffff880071941cd8 R09: 0000000000000001 > R10: 0000000000000000 R11: 0000000000000000 R12: ffff880183920000 > R13: ffffea0000000000 R14: 0000000000000020 R15: 0000000040000000 > FS: 00007f6dd67aa740(0000) GS:ffff880244e00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000020 CR3: 00000001ce03a000 CR4: 00000000001407e0 > DR0: 0000000000000000 DR1: 00000000018efae0 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000f5060a > Stack: > ffffea0000000000 ffff8801cfa75c40 80000001a82008e7 ffff8801cfa75c40 > ffff8801cfa75b20 ffffffff811b13e2 ffff8801e0a8e9f0 ffff8801aa3ab000 > ffffffffffffffff 0000000040200000 ffff8801cfa75c40 ffff8801cfa75bf0 > Call Trace: > [] zap_huge_pmd+0x62/0x140 > [] unmap_single_vma+0x678/0x830 > [] unmap_vmas+0x49/0x90 > [] exit_mmap+0xc5/0x170 > [] mmput+0x6b/0x100 > [] do_exit+0x298/0xce0 > [] do_group_exit+0x4c/0xc0 > [] get_signal_to_deliver+0x2d1/0x930 > [] do_signal+0x48/0x610 > [] ? get_lock_stats+0x19/0x60 > [] ? put_lock_stats.isra.28+0xe/0x30 > [] ? lock_release_holdtime.part.29+0xee/0x170 > [] ? context_tracking_user_exit+0x4e/0x190 > [] ? trace_hardirqs_on_caller+0x115/0x1e0 > [] do_notify_resume+0x5c/0xa0 > [] retint_signal+0x46/0x90 > Code: c1 e0 06 4a 8b 44 28 30 0f b7 00 38 c4 74 79 4c 89 e7 e8 af 03 eb ff 4c 89 e7 48 c1 e8 0c 48 c1 e0 06 49 8b 5c 05 20 4c 8d 73 20 <4c> 3b 73 20 74 35 e8 90 03 eb ff 4c 89 f7 48 89 c2 48 8b 43 20 > RIP [] pgtable_trans_huge_withdraw+0x55/0xc0 > RSP > > > pgtable = pmd_huge_pte(mm, pmdp); > if (list_empty(&pgtable->lru)) > 231: 4c 8d 73 20 lea 0x20(%rbx),%r14 > 235: 4c 3b 73 20 cmp 0x20(%rbx),%r14 <--- faulting instruction. > 239: 74 35 je 270 > > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: email@kvack.org > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org