Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-qg0-f48.google.com ([209.85.192.48]:56958 "EHLO mail-qg0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753022AbaFHBvM (ORCPT ); Sat, 7 Jun 2014 21:51:12 -0400 Received: by mail-qg0-f48.google.com with SMTP id i50so7205430qgf.21 for ; Sat, 07 Jun 2014 18:51:12 -0700 (PDT) From: Jeff Layton Date: Sat, 7 Jun 2014 21:51:09 -0400 To: bfields@fieldses.org Cc: linux-nfs@vger.kernel.org Subject: WARN_ON_ONCE pop with tip of your nfsd-next branch Message-ID: <20140607215109.3cb5e368@tlielax.poochiereds.net> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi Bruce, Just a heads up... Was doing some testing with a pile of patches (mostly v4 state-related) on top of your nfsd-next branch, and saw this pop: [ 111.066217] ------------[ cut here ]------------ [ 111.067223] WARNING: CPU: 0 PID: 588 at fs/nfsd/nfs4xdr.c:3941 nfs4svc_encode_compoundres+0x9a/0xb0 [nfsd]() [ 111.070074] Modules linked in: rpcsec_gss_krb5 snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm ppdev joydev snd_timer microcode serio_raw snd virtio_console virtio_balloon virtio_net pcspkr soundcore parport_pc parport pvpanic nfsd(OE) i2c_piix4 auth_rpcgss nfs_acl lockd sunrpc qxl drm_kms_helper ttm virtio_blk drm virtio_pci virtio_ring i2c_core virtio ata_generic pata_acpi floppy [ 111.081001] CPU: 0 PID: 588 Comm: nfsd Tainted: G OE 3.15.0-rc1.jlayton.1+ #2 [ 111.083615] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 111.084924] 0000000000000000 00000000051421a7 ffff8800d6c3dcf0 ffffffff817d318e [ 111.086613] 0000000000000000 ffff8800d6c3dd28 ffffffff810958bd ffff88003602d000 [ 111.088308] ffff8800d8880000 ffff880118fb4018 ffff880118fb4000 000000000000001c [ 111.089978] Call Trace: [ 111.090552] [] dump_stack+0x4d/0x66 [ 111.091652] [] warn_slowpath_common+0x7d/0xa0 [ 111.092927] [] warn_slowpath_null+0x1a/0x20 [ 111.094189] [] nfs4svc_encode_compoundres+0x9a/0xb0 [nfsd] [ 111.095565] [] nfsd_dispatch+0x14f/0x200 [nfsd] [ 111.096915] [] svc_process_common+0x480/0x6f0 [sunrpc] [ 111.098228] [] svc_process+0x107/0x170 [sunrpc] [ 111.099898] [] nfsd+0xd3/0x160 [nfsd] [ 111.100971] [] ? nfsd_destroy+0x210/0x210 [nfsd] [ 111.102219] [] kthread+0xff/0x120 [ 111.103185] [] ? insert_kthread_work+0x80/0x80 [ 111.104345] [] ret_from_fork+0x7c/0xb0 [ 111.105376] [] ? insert_kthread_work+0x80/0x80 [ 111.106476] ---[ end trace 48ac61da47c8e691 ]--- It's possible that it's due to something I broke, but seems more likely to be something in your XDR overhaul. -- Jeff Layton