From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f171.google.com (mail-wi0-f171.google.com [209.85.212.171]) by kanga.kvack.org (Postfix) with ESMTP id 50F516B006C for ; Wed, 1 Apr 2015 07:53:54 -0400 (EDT) Received: by wixo5 with SMTP id o5so46349558wix.1 for ; Wed, 01 Apr 2015 04:53:53 -0700 (PDT) Received: from mail-ph.de-nserver.de (mail-ph.de-nserver.de. [85.158.179.214]) by mx.google.com with ESMTPS id bs17si2870960wjb.133.2015.04.01.04.53.52 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Apr 2015 04:53:52 -0700 (PDT) Message-ID: <551BDC4F.4010000@profihost.ag> Date: Wed, 01 Apr 2015 13:53:51 +0200 From: Stefan Priebe - Profihost AG MIME-Version: 1.0 Subject: Re: kernel 3.18.10: THP refcounting bug References: <551BBE1A.4040404@profihost.ag> <20150401113122.GA17153@node.dhcp.inet.fi> In-Reply-To: <20150401113122.GA17153@node.dhcp.inet.fi> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: "Kirill A. Shutemov" , sasha.levin@oracle.com Hi, while using 3.18.9 i got several times the following stack trace: kernel BUG at mm/filemap.c:203! invalid opcode: 0000 [#1] SMP Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_common virtio_ring ata_piix virtio floppy CPU: 3 PID: 1 Comm: busybox Tainted: G B 3.18.9 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014 task: ffff880137b98000 ti: ffff880137b94000 task.ti: ffff880137b94000 RIP: 0010:[] [] __delete_from_page_cache+0x2b5/0x2c0 RSP: 0018:ffff880137b97be8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000ffffffd0 RDX: 0000000000000030 RSI: 000000000000000a RDI: ffff88013f9696c0 RBP: ffff880137b97c38 R08: 0000000000000000 R09: ffffea0002e927c0 R10: ffff8800bba92da0 R11: ffff880137b97c00 R12: ffffea0002e92480 R13: ffff8800bba8c4c8 R14: 0000000000000000 R15: ffff8800bba8c4d0 FS: 00007f5a79e0b700(0000) GS:ffff880139060000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000023c3138 CR3: 00000000b84ba000 CR4: 00000000000006e0 Stack: 000000000000000e ffff880137b97d48 ffff8800bba92da0 ffff8800bba92dc8 ffff880137b97c68 ffffea0002e92480 ffff8800bba8c4c8 0000000000000000 0000000000000000 0000000000000000 ffff880137b97c68 ffffffff81134604 Call Trace: [] delete_from_page_cache+0x44/0x70 [] truncate_inode_page+0x5b/0x90 [] truncate_inode_pages_range+0x1a4/0x6c0 [] truncate_inode_pages+0x15/0x20 [] truncate_inode_pages_final+0x3c/0x50 [] evict+0x16c/0x180 [] iput+0x105/0x190 [] do_unlinkat+0x189/0x2b0 [] SyS_unlink+0x16/0x20 [] system_call_fastpath+0x12/0x17 Code: 66 0f 1f 44 00 00 48 8b 75 c0 4c 89 ff e8 e4 5d 1f 00 84 c0 0f 85 5e fe ff ff e9 41 fe ff ff 0f 1f 80 00 00 00 00 e8 75 70 4b 00 <0f> 0b 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 83 e2 fd 48 RIP [] __delete_from_page_cache+0x2b5/0x2c0 RSP ---[ end trace a4727cb71335dbd4 ]--- Is this a known bug? Thanks! -- Greets, Stefan -- 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