From: Jesper Krogh Subject: Kernel call trace on NFS-mount (using autofs). Date: Tue, 20 May 2008 20:55:42 +0200 Message-ID: <48331EAE.6060107@krogh.cc> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed To: NFS list Return-path: Received: from 2605ds1-ynoe.1.fullrate.dk ([90.184.12.24]:43928 "EHLO shrek.krogh.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756123AbYETS4F (ORCPT ); Tue, 20 May 2008 14:56:05 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by shrek.krogh.cc (Postfix) with ESMTP id 14BB23BF2F1 for ; Tue, 20 May 2008 20:56:03 +0200 (CEST) Received: from shrek.krogh.cc ([127.0.0.1]) by localhost (shrek.krogh.cc [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cr2CaYP7I7ZP for ; Tue, 20 May 2008 20:55:48 +0200 (CEST) Received: from [192.168.1.5] (unknown [90.184.13.46]) by shrek.krogh.cc (Postfix) with ESMTP id D40E73BF2BE for ; Tue, 20 May 2008 20:55:48 +0200 (CEST) Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi. I'm seeing this every now and then. (not directly reproduceable). May 20 13:58:33 node36 kernel: [1291441.355677] PGD 6b195067 PUD a7751067 PMD 0 May 20 13:58:33 node36 kernel: [1291441.448833] CPU 0 May 20 13:58:33 node36 kernel: [1291441.475005] Modules linked in: nfs lockd sunrpc autofs4 ipv6 usbhid hid uhci_hcd ehci_hcd usbkbd fuse parport_pc lp parport af_packet i2c_amd756 i2c_core pcspkr psmouse k8temp amd_rng serio_raw shpchp pci_hotplug evdev ext3 jbd mbcache sg sd_mod ide_cd cdrom ata_generic libata floppy mptspi mptscsih mptbase scsi_transport_spi scsi_mod tg3 ohci_hcd amd74xx ide_core usbcore thermal processor fan capability commoncap May 20 13:58:33 node36 kernel: [1291441.920746] Pid: 1080, comm: mount.nfs Not tainted 2.6.22-14-generic #1 May 20 13:58:33 node36 kernel: [1291442.001856] RIP: 0010:[graft_tree+76/304] [graft_tree+76/304] graft_tree+0x4c/0x130 May 20 13:58:33 node36 kernel: [1291442.098650] RSP: 0018:ffff8100856b3c48 EFLAGS: 00010246 May 20 13:58:33 node36 kernel: [1291442.164181] RAX: ffff8100ce0e41a0 RBX: 00000000ffffffec RCX: 0000000000000000 May 20 13:58:33 node36 kernel: [1291442.251524] RDX: ffff8100ba66f100 RSI: ffff8100856b3e58 RDI: ffff8100a7c63600 May 20 13:58:33 node36 kernel: [1291442.338866] RBP: ffff8100a7c63600 R08: 0000000000000000 R09: ffff81005ad02980 May 20 13:58:33 node36 kernel: [1291442.426210] R10: 000000001685c20a R11: 0000000000000006 R12: ffff8100856b3e58 May 20 13:58:33 node36 kernel: [1291442.513551] R13: 0000000000000000 R14: 000000000000000b R15: 000000000000000b May 20 13:58:33 node36 kernel: [1291442.600894] FS: 00002b12c126d6e0(0000) GS:ffffffff80561000(0000) knlGS:00000000f7da76b0 May 20 13:58:33 node36 kernel: [1291442.699656] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b May 20 13:58:33 node36 kernel: [1291442.770380] CR2: 00000000000000b2 CR3: 000000002ade7000 CR4: 00000000000006e0 May 20 13:58:33 node36 kernel: [1291442.857723] Process mount.nfs (pid: 1080, threadinfo ffff8100856b2000, task ffff8100bcba14a0) May 20 13:58:33 node36 kernel: [1291442.961678] Stack: ffff8100856b3e58 ffff8100856b3e60 ffff8100a7c63600 ffffffff802b1fa0 May 20 13:58:33 node36 kernel: [1291443.059926] 0000000000000006 ffffffffa7c63600 ffff810030d78000 ffff810059996000 May 20 13:58:33 node36 kernel: [1291443.150800] ffff81007b39e000 ffffffff802b3271 0000000000000010 0000000000000000 May 20 13:58:33 node36 kernel: [1291443.239489] Call Trace: May 20 13:58:33 node36 kernel: [1291443.272934] [do_add_mount+160/352] do_add_mount+0xa0/0x160 May 20 13:58:33 node36 kernel: [1291443.339502] [do_mount+1329/2000] do_mount+0x531/0x7d0 May 20 13:58:33 node36 kernel: [1291443.402957] [__handle_mm_fault+1985/2912] __handle_mm_fault+0x7c1/0xb60 May 20 13:58:33 node36 kernel: [1291443.475761] [autoremove_wake_function+0/48] autoremove_wake_function+0x0/0x30 May 20 13:58:33 node36 kernel: [1291443.552711] [__up_read+33/176] __up_read+0x21/0xb0 May 20 13:58:33 node36 kernel: [1291443.615125] [do_page_fault+971/2160] do_page_fault+0x3cb/0x870 May 20 13:58:33 node36 kernel: [1291443.683776] [zone_statistics+125/128] zone_statistics+0x7d/0x80 May 20 13:58:33 node36 kernel: [1291443.752425] [error_exit+0/132] error_exit+0x0/0x84 May 20 13:58:33 node36 kernel: [1291443.814842] [copy_mount_options+273/384] copy_mount_options+0x111/0x180 May 20 13:58:33 node36 kernel: [1291443.888680] [sys_mount+155/256] sys_mount+0x9b/0x100 May 20 13:58:33 node36 kernel: [1291443.952136] [system_call+126/131] system_call+0x7e/0x83 May 20 13:58:33 node36 kernel: [1291444.016629] May 20 13:58:33 node36 kernel: [1291444.036459] May 20 13:58:33 node36 kernel: [1291444.036460] Code: 0f b7 81 b2 00 00 00 25 00 f0 00 00 3d 00 40 00 00 48 8b 47 May 20 13:58:33 node36 kernel: [1291444.215606] RSP It does get triggered by some application using the automounter (autofs) that then does the mount.nfs call. Kernel is a: 2.6.22-14-generic. I wasn't able to search similar stuff up from the archive. Jesper -- Jesper