From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rince Subject: Re: [patch] mm: close page_mkwrite races (try 3) Date: Sat, 2 May 2009 18:12:49 -0400 Message-ID: <5da0588e0905021512n7d0318c3wc4b8cab5bf2a2d09@mail.gmail.com> References: <20090414071152.GC23528@wotan.suse.de> <20090428185739.GE6377@localdomain> <20090429071233.GC3398@wotan.suse.de> <20090429002418.fd9072a6.akpm@linux-foundation.org> <20090429074511.GD3398@wotan.suse.de> <1241008762.6336.5.camel@heimdal.trondhjem.org> <20090429082733.f69b45c1.akpm@linux-foundation.org> <1241023514.12464.2.camel@heimdal.trondhjem.org> <5da0588e0904300722p538cb174xcc01bbe85dd58ec8@mail.gmail.com> <5da0588e0904300733t313b9168s634dfd51fc8a5b60@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-fsdevel@vger.kernel.org To: Trond Myklebust Return-path: Received: from qw-out-2122.google.com ([74.125.92.27]:18985 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754895AbZEBWMu convert rfc822-to-8bit (ORCPT ); Sat, 2 May 2009 18:12:50 -0400 Received: by qw-out-2122.google.com with SMTP id 5so2498718qwd.37 for ; Sat, 02 May 2009 15:12:49 -0700 (PDT) In-Reply-To: <5da0588e0904300733t313b9168s634dfd51fc8a5b60@mail.gmail.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Well...that's different. BUG: unable to handle kernel NULL pointer dereference at 00000000000000= 10 IP: [] _nfs4_do_setlk+0xe3/0x289 [nfs] PGD 10e4f7067 PUD 109221067 PMD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/block/md0/md/metadata_version CPU 0 Modules linked in: autofs4 coretemp hwmon nfs lockd nfs_acl auth_rpcgss sunrpc cachefiles fscache ipv6 cpufreq_ondemand acpi_cpufreq freq_table kvm_intel kvm snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm cpia_usb e1000e snd_timer ppdev cpia snd ums_cypress parport_pc videodev firewire_ohci i82975x_edac usb_storage parport firewire_core i2c_i801 edac_core v4l1_compat soundcore snd_page_alloc iTCO_wdt v4l2_compat_ioctl32 pcspkr i2c_core crc_itu_t iTCO_vendor_support raid1 [last unloaded: scsi_wait_scan] Pid: 29418, comm: 10.1.1.2-manage Not tainted 2.6.30-rc4 #1 RIP: 0010:[] [] _nfs4_do_setlk+0xe3/0x289 [nfs] RSP: 0018:ffff880102361d30 EFLAGS: 00010246 RAX: ffff8800ce865f00 RBX: ffff88010b4b74d8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000000000d0 RDI: 0000000000000138 RBP: ffff880102361de0 R08: ffff880126557000 R09: ffff8800b38c3900 R10: ffffffffa02cbd1c R11: ffff880126553c00 R12: 00000000fffffff4 R13: 0000000000000000 R14: ffff88012d42f5c0 R15: ffff88012d42f5c0 =46S: 0000000000000000(0000) GS:ffff880028023000(0000) knlGS:000000000= 0000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000010 CR3: 0000000016eda000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process 10.1.1.2-manage (pid: 29418, threadinfo ffff880102360000, task ffff8800015b5c00) Stack: ffff880102361d40 0000000600000001 ffff8800ce865f00 ffffffffa02cbc5c 0000000000000000 ffff880126555c00 ffff880102361d90 ffffffffa02db960 0000000000000000 ffff880128093000 0000000000000001 ffffffffa02b88aa Call Trace: [] ? nfs4_open_recover_helper+0x82/0x97 [nfs] [] ? __put_nfs_open_context+0x31/0x98 [nfs] [] nfs4_lock_reclaim+0x60/0x8d [nfs] [] nfs4_do_reclaim+0x13d/0x322 [nfs] [] nfs4_run_state_manager+0x199/0x27f [nfs] [] ? nfs4_run_state_manager+0x0/0x27f [nfs] [] ? nfs4_run_state_manager+0x0/0x27f [nfs] [] kthread+0x5b/0x88 [] child_rip+0xa/0x20 [] ? restore_args+0x0/0x30 [] ? kthread+0x0/0x88 [] ? child_rip+0x0/0x20 Code: 10 e1 49 8b 47 58 4d 8b af 90 00 00 00 be d0 00 00 00 bf 38 01 00 00 41 bc f4 ff ff ff 48 8b 80 a0 00 00 00 48 89 85 60 ff ff ff <49> 8b 45 10 4c 8b 70 38 49 8b 86 00 01 00 00 48 8b 80 a8 02 00 RIP [] _nfs4_do_setlk+0xe3/0x289 [nfs] RSP CR2: 0000000000000010 ---[ end trace 205a6f9494aa30de ]--- It's unclear to me whether I should blame this on the patches applied, or that this is just something never triggered unless the aforementioned bug is fixed... - Rich --=20 Aquele que ri do destino conquistar=E1 a fortuna. -- Benjamin Disraeli -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel= " in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html