From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758758AbZDCFwi (ORCPT ); Fri, 3 Apr 2009 01:52:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751690AbZDCFw1 (ORCPT ); Fri, 3 Apr 2009 01:52:27 -0400 Received: from mail-qy0-f118.google.com ([209.85.221.118]:36589 "EHLO mail-qy0-f118.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751590AbZDCFw1 convert rfc822-to-8bit (ORCPT ); Fri, 3 Apr 2009 01:52:27 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=NG40MwbkCEG3KkQDrKsg9406Tar0vwu0FsjO4z3RZD6ZrjxOETTH1AhLHGzn9ErJaU kQvB8ry7UpXtkjUaYHfKC4tUCi/xqaMNawaSXfc3MB+KCOuB+vlfsdZpzIMICVIwTTIK GeW3k7dIqUkKHht6oSl4Z+L5xNpWLJI5Hl2ZQ= MIME-Version: 1.0 In-Reply-To: <49D56415.1080402@kernel.org> References: <86802c440904021512o2405ffa2gcbe057b9f81d5a46@mail.gmail.com> <20090402222106.GC9239@elte.hu> <49D56415.1080402@kernel.org> Date: Fri, 3 Apr 2009 08:52:22 +0300 X-Google-Sender-Auth: 18bc7b491247fb90 Message-ID: <84144f020904022252v2dbc18f5o35cc9737bf6d146d@mail.gmail.com> Subject: Re: nfs mount fail on linus 20090402 git From: Pekka Enberg To: Yinghai Lu Cc: Ingo Molnar , David Miller , "linux-kernel@vger.kernel.org" , Trond Myklebust , chuck.lever@oracle.com Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 3, 2009 at 4:19 AM, Yinghai Lu wrote: > mpk12-3214-189-158:~ # cat x > mount -t nfs 10.6.75.100:/data/shared/pxeboot /x > mpk12-3214-189-158:~ # sh x > [   63.198629] ------------[ cut here ]------------ > [   63.202589] kernel BUG at mm/slub.c:2753! > [   63.202589] invalid opcode: 0000 [#1] SMP > [   63.202589] last sysfs file: /sys/devices/virtual/net/sit0/type > [   63.202589] CPU 0 > [   63.202589] Modules linked in: > [   63.202589] Pid: 10027, comm: mount.nfs Not tainted 2.6.29-07100-g833bb30 #21 Sun Fire X4440 > [   63.202589] RIP: 0010:[]  [] kfree+0x5a/0xcd > [   63.202589] RSP: 0018:ffff882042ceb9f8  EFLAGS: 00010246 > [   63.202589] RAX: 0200000000000000 RBX: 0000000000000005 RCX: ffffffff80a7dc1f > [   63.202589] RDX: ffffe20000000000 RSI: ffffc2000000f470 RDI: ffffe2001c018950 > [   63.202589] RBP: ffff882042ceba18 R08: 0000000000000000 R09: ffffffff811019c0 > [   63.202589] R10: 000000004262ce02 R11: ffff882042ceba18 R12: ffff880800706475 > [   63.202589] R13: ffff882042886000 R14: ffff882042cebbd8 R15: ffff882042cebbf0 > [   63.202589] FS:  00007fac729ed6f0(0000) GS:ffffc20000000000(0000) knlGS:0000000000000000 > [   63.202589] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [   63.202589] CR2: 00007fac72c12000 CR3: 0000001841cbb000 CR4: 00000000000006e0 > [   63.202589] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [   63.202589] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > [   63.202589] Process mount.nfs (pid: 10027, threadinfo ffff882042cea000, task ffff8820434dc290) > [   63.202589] Stack: > [   63.202589]  ffff882042ceba18 000000004262ce02 0000000000000005 ffff882042886028 > [   63.202589]  ffff882042ceba58 ffffffff80a7dc1f 000000004262ce02 ffff882042886000 > [   63.202589]  000000004262ce02 ffff882042886000 ffffffff80a7b4a6 ffff882042c9ee18 > [   63.202589] Call Trace: > [   63.202589]  [] xs_destroy+0x67/0xac > [   63.202589]  [] ? xprt_destroy+0x0/0xa7 > [   63.202589]  [] xprt_destroy+0x8c/0xa7 > [   63.202589]  [] ? put_rpccred+0x112/0x131 > [   63.202589]  [] kref_put+0x65/0x87 > [   63.202589]  [] ? rpc_free_client+0x0/0xf9 > [   63.202589]  [] xprt_put+0x23/0x39 > [   63.202589]  [] rpc_free_client+0xd1/0xf9 > [   63.202589]  [] ? unx_destroy+0x3c/0x57 > [   63.202589]  [] kref_put+0x65/0x87 > [   63.202589]  [] ? rpc_free_auth+0x0/0x69 > [   63.202589]  [] rpc_free_auth+0x4e/0x69 > [   63.202589]  [] ? __wake_up+0x52/0x75 > [   63.202589]  [] kref_put+0x65/0x87 > [   63.202589]  [] rpc_release_client+0x64/0x7f > [   63.202589]  [] ? rpc_put_task+0xb0/0xcb > [   63.202589]  [] rpc_shutdown_client+0xd5/0xf8 > [   63.202589]  [] ? rpc_call_sync+0x63/0x80 > [   63.202589]  [] nfs_mount+0x11f/0x1bf > [   63.202589]  [] nfs_get_sb+0x4ac/0x82a > [   63.202589]  [] vfs_kern_mount+0x61/0xbf > [   63.202589]  [] ? get_fs_type+0x58/0xc5 > [   63.202589]  [] do_kern_mount+0x56/0x108 > [   63.202589]  [] do_mount+0x729/0x788 > [   63.202589]  [] ? copy_mount_options+0xdf/0x155 > [   63.202589]  [] sys_mount+0x98/0xf8 > [   63.202589]  [] system_call_fastpath+0x16/0x1b > [   63.202589] Code: 0c 48 ba 00 00 00 00 00 e2 ff ff 48 6b c0 38 48 8d 3c 10 48 8b 07 f6 c4 40 74 04 48 8b 7f 10 48 8b 07 84 c0 78 10 f6 c4 60 75 04 <0f> 0b eb fe e8 90 75 fd ff eb 4c 48 8b 4d 08 4c 8b 4f 10 9c 5b > [   63.202589] RIP  [] kfree+0x5a/0xcd > [   63.202589]  RSP > [   63.524555] ---[ end trace cd0d38e02ad11d61 ]--- Looks like a bogus pointer passed to kfree(). Lets cc some NFS folks.