Seth, here's a copy of a lockup from /var/log/kern.log. Sorry, I wanted to attach this sooner, but the fact that the lockup takes down both the network and the filesystem made capturing this unreliable.
Feb 20 17:52:14 virgil kernel: [93233.532498] BUG: soft lockup - CPU#1 stuck for 22s! [kworker/1:0:32266] Feb 20 17:52:14 virgil kernel: [93233.532504] Modules linked in: hid_microsoft usbhid hid snd_usb_audio snd_usbmidi_lib ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs dm_snapshot cts des_generic nfsv3 nfsv4 ctr ccm xt_conntrack ipt_REJECT ip6table_filter ip6_tables xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables rfcomm bnep rpcsec_gss_krb5 binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm joydev arc4 snd_hda_codec_hdmi dm_multipath iwldvm scsi_dh snd_hda_codec_realtek uvcvideo mac80211 btusb snd_hda_intel snd_hda_codec videobuf2_vmalloc bluetooth videobuf2_memops videobuf2_core videodev snd_hwdep thinkpad_acpi snd_pcm iwlwifi snd_page_alloc nvram snd_seq_midi snd_seq_midi_event snd_rawmidi microcode psmouse snd_seq cfg80211 snd_seq_device snd_timer serio_raw snd soundcore me i_me mei lpc_ich mac_hid nls_iso8859_1 lp parport btrfs(F) xor(F) raid6_pq(F) libcrc32c(F) dm_crypt(F) crct10dif_pclmul(F) crc32_pclmul(F) ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) lrw(F) gf128mul(F) glue_helper(F) ablk_helper(F) cryptd(F) ahci(F) libahci(F) sdhci_pci(F) sdhci(F) e1000e(F) ptp(F) pps_core(F) i915(F) i2c_algo_bit(F) drm_kms_helper(F) drm(F) wmi(F) video(F) Feb 20 17:52:14 virgil kernel: [93233.532643] CPU: 1 PID: 32266 Comm: kworker/1:0 Tainted: GF W 3.13.0-8-generic #28-Ubuntu Feb 20 17:52:14 virgil kernel: [93233.532646] Hardware name: LENOVO 2306CTO/2306CTO, BIOS G2ET97WW (2.57 ) 10/25/2013 Feb 20 17:52:14 virgil kernel: [93233.532669] Workqueue: rpciod rpc_async_schedule [sunrpc] Feb 20 17:52:14 virgil kernel: [93233.532673] task: ffff88017b573000 ti: ffff8801d106e000 task.ti: ffff8801d106e000 Feb 20 17:52:14 virgil kernel: [93233.532675] RIP: 0010:[<ffffffffa07a5c7f>] [<ffffffffa07a5c7f>] call_refreshresult+0x4f/0x150 [sunrpc] Feb 20 17:52:14 virgil kernel: [93233.532690] RSP: 0018:ffff8801d106fda0 EFLAGS: 00000246 Feb 20 17:52:14 virgil kernel: [93233.532692] RAX: 0000000000000005 RBX: 0000000000000003 RCX: ffff88020f6d6198 Feb 20 17:52:14 virgil kernel: [93233.532695] RDX: 0000000000000001 RSI: ffff88006a3c7e40 RDI: ffff88009f164a00 Feb 20 17:52:14 virgil kernel: [93233.532697] RBP: ffff8801d106fdb0 R08: 0000000000000003 R09: 0000000000000003 Feb 20 17:52:14 virgil kernel: [93233.532700] R10: ffff88020f6d61c0 R11: ffffffffa07aa8a3 R12: ffff88020f6d61c0 Feb 20 17:52:14 virgil kernel: [93233.532702] R13: ffffffffa07aa8a3 R14: ffff88020f6d6198 R15: ffff8801d106fd98 Feb 20 17:52:14 virgil kernel: [93233.532705] FS: 0000000000000000(0000) GS:ffff88021e240000(0000) knlGS:0000000000000000 Feb 20 17:52:14 virgil kernel: [93233.532708] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 20 17:52:14 virgil kernel: [93233.532710] CR2: 00007f682cd48b24 CR3: 0000000002c0e000 CR4: 00000000001407e0 Feb 20 17:52:14 virgil kernel: [93233.532713] Stack: Feb 20 17:52:14 virgil kernel: [93233.532715] ffff88009f164a00 ffff880211f59800 ffff8801d106fe08 ffffffffa07b0d64 Feb 20 17:52:14 virgil kernel: [93233.532721] 0000000000014440 ffff88009f164a70 ffffffff81094538 0000000000000000 Feb 20 17:52:14 virgil kernel: [93233.532726] ffff88017b573000 ffff88021e253cc0 ffff88009f164a88 0000000000000000 Feb 20 17:52:14 virgil kernel: [93233.532731] Call Trace: Feb 20 17:52:14 virgil kernel: [93233.532751] [<ffffffffa07b0d64>] __rpc_execute+0x84/0x410 [sunrpc] Feb 20 17:52:14 virgil kernel: [93233.532759] [<ffffffff81094538>] ? finish_task_switch+0x128/0x170 Feb 20 17:52:14 virgil kernel: [93233.532775] [<ffffffffa07b1116>] rpc_async_schedule+0x26/0x30 [sunrpc] Feb 20 17:52:14 virgil kernel: [93233.532783] [<ffffffff81080702>] process_one_work+0x182/0x450 Feb 20 17:52:14 virgil kernel: [93233.532788] [<ffffffff810814a1>] worker_thread+0x121/0x410 Feb 20 17:52:14 virgil kernel: [93233.532793] [<ffffffff81081380>] ? rescuer_thread+0x3e0/0x3e0 Feb 20 17:52:14 virgil kernel: [93233.532798] [<ffffffff810880f2>] kthread+0xd2/0xf0 Feb 20 17:52:14 virgil kernel: [93233.532803] [<ffffffff81088020>] ? kthread_create_on_node+0x190/0x190 Feb 20 17:52:14 virgil kernel: [93233.532811] [<ffffffff8171a4fc>] ret_from_fork+0x7c/0xb0 Feb 20 17:52:14 virgil kernel: [93233.532816] [<ffffffff81088020>] ? kthread_create_on_node+0x190/0x190 Feb 20 17:52:14 virgil kernel: [93233.532818] Code: 83 fc 92 c7 83 cc 00 00 00 00 00 00 00 48 c7 43 50 c0 5b 7a a0 0f 84 91 00 00 00 7e 67 41 83 fc f5 74 21 45 85 e4 75 62 48 89 df <e8> ec d8 00 00 85 c0 74 48 48 c7 43 50 b0 58 7a a0 5b 41 5c 5d -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1282302 Title: deadlock when unmounting nfs shares in trusty To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1282302/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
