Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754818AbYHBMK2 (ORCPT ); Sat, 2 Aug 2008 08:10:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752520AbYHBMKU (ORCPT ); Sat, 2 Aug 2008 08:10:20 -0400 Received: from jenny.ondioline.org ([66.220.1.122]:34743 "EHLO jenny.ondioline.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752465AbYHBMKT (ORCPT ); Sat, 2 Aug 2008 08:10:19 -0400 X-Greylist: delayed 420 seconds by postgrey-1.27 at vger.kernel.org; Sat, 02 Aug 2008 08:10:19 EDT From: Paul Collins To: linux-kernel@vger.kernel.org, nfsv4@linux-nfs.org, linuxppc-dev@ozlabs.org Subject: nfsd, v4: oops in find_acceptable_alias, ppc32 Linux, post-2.6.27-rc1 Mail-Followup-To: linux-kernel@vger.kernel.org, nfsv4@linux-nfs.org, linuxppc-dev@ozlabs.org Date: Sun, 03 Aug 2008 00:03:18 +1200 Message-ID: <87tze38vzt.fsf@burly.wgtn.ondioline.org> User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/23.0.60 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2851 Lines: 57 I just got the oops below on a ppc32 NFS4 server. I was cross-compiling Linux with an amd64 client at the time. The server is running Linus's tree as of 94ad374a0751f40d25e22e036c37f7263569d24c, the client is running 2.6.26. The server's kernel was cross-compiled with gcc 4.2.4-3 and binutils 2.18.50.20080610-1, both built from the Debian sources following their toolchain-building procedures. Annoyingly, I can't kill two of the client processes: 1 11634 11634 977 ? -1 D 1000 0:00 make ARCH=powerpc CROSS_COMPILE=powerpc-linux-gnu- oldconfig vmlinux modules 1 23887 11634 977 ? -1 D 1000 0:00 [powerpc-linux-g] Here's the oops. The instruction dump really was all Xes. Unable to handle kernel paging request for instruction fetch Faulting instruction address: 0x00000000 Oops: Kernel access of bad area, sig: 11 [#1] PowerMac Modules linked in: snd_aoa_codec_tas snd_aoa_fabric_layout snd_aoa snd_aoa_i2sbus snd_aoa_soundbus radeon drm b43 mac80211 cfg80211 pcmcia snd_pcm_oss snd_pcm snd_page_alloc yenta_socket rsrc_nonstatic pcmcia_core ssb uninorth_agp agpgart ehci_hcd ohci_hcd [last unloaded: snd_aoa_soundbus] NIP: 00000000 LR: c0159a44 CTR: 00000000 REGS: c1d81c70 TRAP: 0400 Not tainted (2.6.27-rc1-00158-g643fbd8) MSR: 40009032 CR: 82002024 XER: 20000000 TASK = c1c7b210[2306] 'nfsd' THREAD: c1d80000 GPR00: c0159bcc c1d81d20 c1c7b210 82002044 c2e538d4 82002044 002e499d f92d835f GPR08: 00000000 c2e55ac4 c2e55adc c1d81d50 82002024 00000000 018985fc 01898404 GPR16: 01898710 018c7894 c04b03f4 c04b03e0 c0173da0 c05f4e84 fffff000 00000001 GPR24: c00c05dc 00000000 82002044 00000000 c2e538d4 c2e538d4 c0437120 c1d81d20 NIP [00000000] 0x0 LR [c0159a44] find_acceptable_alias+0x44/0x108 Call Trace: [c1d81d20] [c00cbab8] exportfs_d_alloc+0x40/0x70 (unreliable) [c1d81d50] [c0159bcc] exportfs_decode_fh+0xc4/0x200 [c1d81e80] [c015d568] fh_verify+0x2e8/0x578 [c1d81ed0] [c016b1ec] nfsd4_putfh+0x60/0x78 [c1d81ef0] [c016afd0] nfsd4_proc_compound+0x1e4/0x34c [c1d81f30] [c015a060] nfsd_dispatch+0xfc/0x220 [c1d81f50] [c0400c70] svc_process+0x3e4/0x6e8 [c1d81f90] [c015a8bc] nfsd+0x1c4/0x294 [c1d81fd0] [c0049e48] kthread+0x5c/0x9c [c1d81ff0] [c00125c0] kernel_thread+0x44/0x60 Instruction dump: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX ---[ end trace 88de9451d0d3e759 ]--- -- Paul Collins Wellington, New Zealand Dag vijandelijk luchtschip de huismeester is dood -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/