Hi, for me happening in Linux red-compute 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux.
It seems this has something related to openvswitch that seems to trigger the error more often. But every bootup I have this on my log: [ 437.773703] ip6_tables: (C) 2000-2006 Netfilter Core Team [ 458.240318] ------------[ cut here ]------------ [ 458.240326] WARNING: CPU: 0 PID: 157 at /build/buildd/linux-3.13.0/fs/proc/generic.c:522 remove_proc_entry+0x19f/0x1b0() [ 458.240328] remove_proc_entry: removing non-empty directory 'fs/nfsfs', leaking at least 'volumes' [ 458.240330] Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables veth 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 nbd ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi rfcomm rbd libceph nfsd auth_rpcgss openvswitch gre vxlan ip_tunnel binfmt_misc nfs_acl nfs lockd sunrpc fscache dm_crypt xfs snd_usb_audio snd_usbmidi_lib fglrx(POX) gspca_ov534 gspca_main videodev wacom joydev kvm_amd kvm dm_multipath scsi_dh serio_raw edac_core edac_mce_amd k10temp snd_hda_codec_hdmi btusb snd_hda_codec_realtek bluetooth snd_hda_intel snd_hda_codec snd_seq_midi snd_seq_midi_event snd_hwdep snd_pcm snd_rawmidi snd_seq snd_page_alloc snd_seq_device snd_timer snd soundcore sp5100_tco i2c_piix4 amd_iommu_v2 asus_atk0110 mac_hid parport_pc ppdev lp parport btrfs libcrc32c raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear dm_mirror dm_region_hash dm_log hid_generic hid_logitech_dj usbhid hid pata_acpi psmouse pata_atiixp pata_marvell e1000e firewire_ohci ahci libahci firewire_core ptp floppy pps_core crc_itu_t r8169 mii wmi [ 458.240393] CPU: 0 PID: 157 Comm: kworker/u12:8 Tainted: P OX 3.13.0-37-generic #64-Ubuntu [ 458.240395] Hardware name: System manufacturer System Product Name/M4A79T Deluxe, BIOS 3503 05/06/2011 [ 458.240398] Workqueue: netns cleanup_net [ 458.240400] 0000000000000009 ffff88031964bc80 ffffffff8171ed09 ffff88031964bcc8 [ 458.240403] ffff88031964bcb8 ffffffff8106773d ffff88031d22cc80 0000000000000005 [ 458.240405] ffffffffa0ffb8a8 ffff8800cfb60130 ffff88031d22ccf5 ffff88031964bd18 [ 458.240408] Call Trace: [ 458.240412] [<ffffffff8171ed09>] dump_stack+0x45/0x56 [ 458.240415] [<ffffffff8106773d>] warn_slowpath_common+0x7d/0xa0 [ 458.240419] [<ffffffff810677ac>] warn_slowpath_fmt+0x4c/0x50 [ 458.240421] [<ffffffff8122989f>] remove_proc_entry+0x19f/0x1b0 [ 458.240434] [<ffffffffa0fdb4e2>] nfs_fs_proc_net_exit+0x62/0x70 [nfs] [ 458.240443] [<ffffffffa0fe15b2>] nfs_net_exit+0x12/0x20 [nfs] [ 458.240445] [<ffffffff8161b409>] ops_exit_list.isra.1+0x39/0x60 [ 458.240447] [<ffffffff8161bc90>] cleanup_net+0x110/0x250 [ 458.240450] [<ffffffff810839c2>] process_one_work+0x182/0x450 [ 458.240453] [<ffffffff810847b1>] worker_thread+0x121/0x410 [ 458.240455] [<ffffffff81084690>] ? rescuer_thread+0x430/0x430 [ 458.240458] [<ffffffff8108b492>] kthread+0xd2/0xf0 [ 458.240460] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0 [ 458.240462] [<ffffffff8172f77c>] ret_from_fork+0x7c/0xb0 [ 458.240465] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0 [ 458.240466] ---[ end trace deb7a3367698c9e6 ]--- [ 458.750935] IPv6: ADDRCONF(NETDEV_UP): virbr0: link is not ready [ 463.179724] init: plymouth-upstart-bridge main process ended, respawning I will attach also logs of several kernel panics that I think may be related. Older kernel of the same series used to have this problem less often. I mean 3.13.0-2X? Don't remember. Anyway this bug should be marked as critical since it affects normal ops. And can cause dataloss and network downs. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1376245 Title: remove_proc_entry+0x139/0x1b0() -- name 'fs/nfsfs' Status in “linux” package in Ubuntu: Confirmed Bug description: Ubuntu 14.04 amd64 ii linux-image-3.13.0-37-generic 3.13.0-37.64 amd64 Linux kernel image for version 3.13.0 on 64 bit x86 SMP sloeuillet@SLoeuillet-DE107:/sfr$ uname -a Linux SLoeuillet-DE107 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Today, I encountered 2 quite identical stack traces in my dmesg, related to nfs : [368973.412120] WARNING: CPU: 1 PID: 15607 at /build/buildd/linux-3.13.0/fs/proc/generic.c:511 remove_proc_entry+0x139/0x1b0() [368973.412122] name 'fs/nfsfs' [368973.412123] Modules linked in: cdc_acm nfsv3 rpcsec_gss_krb5 8021q garp stp mrp llc cuse bnep rfcomm bluetooth nfsv4 nfsd auth_rpcgss nfs_acl nfs lockd sunrpc binfmt_misc fscache hp_wmi sparse_keymap snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm radeon snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sp5100_tco snd_seq_device serio_raw snd_timer ttm drm_kms_helper snd kvm edac_core soundcore drm edac_mce_amd k8temp i2c_algo_bit i2c_piix4 tpm_infineon shpchp wmi mac_hid parport_pc ppdev lp parport hid_generic usbhid hid tg3 psmouse ptp pps_core floppy ahci libahci [368973.412164] CPU: 1 PID: 15607 Comm: kworker/u8:1 Tainted: G W 3.13.0-37-generic #64-Ubuntu [368973.412166] Hardware name: Hewlett-Packard HP Compaq dc5850 Small Form Factor/3029h, BIOS 786F6 v03.14 11/15/2011 [368973.412171] Workqueue: netns cleanup_net [368973.412172] 0000000000000009 ffff88006a875c80 ffffffff8171ed09 ffff88006a875cc8 [368973.412176] ffff88006a875cb8 ffffffff8106773d 0000000000000000 0000000000000005 [368973.412179] ffffffffa05168a8 ffff88011b418b30 0000000000000100 ffff88006a875d18 [368973.412182] Call Trace: [368973.412188] [<ffffffff8171ed09>] dump_stack+0x45/0x56 [368973.412192] [<ffffffff8106773d>] warn_slowpath_common+0x7d/0xa0 [368973.412195] [<ffffffff810677ac>] warn_slowpath_fmt+0x4c/0x50 [368973.412198] [<ffffffff81229839>] remove_proc_entry+0x139/0x1b0 [368973.412217] [<ffffffffa04f64e2>] nfs_fs_proc_net_exit+0x62/0x70 [nfs] [368973.412225] [<ffffffffa04fc5b2>] nfs_net_exit+0x12/0x20 [nfs] [368973.412228] [<ffffffff8161b409>] ops_exit_list.isra.1+0x39/0x60 [368973.412231] [<ffffffff8161bc90>] cleanup_net+0x110/0x250 [368973.412235] [<ffffffff810839c2>] process_one_work+0x182/0x450 [368973.412237] [<ffffffff810847b1>] worker_thread+0x121/0x410 [368973.412240] [<ffffffff81084690>] ? rescuer_thread+0x430/0x430 [368973.412243] [<ffffffff8108b492>] kthread+0xd2/0xf0 [368973.412246] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0 [368973.412249] [<ffffffff8172f77c>] ret_from_fork+0x7c/0xb0 [368973.412251] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0 [368973.412253] ---[ end trace bb78fe56a3dcb678 ]--- [368973.448199] WARNING: CPU: 1 PID: 15607 at /build/buildd/linux-3.13.0/fs/proc/generic.c:511 remove_proc_entry+0x139/0x1b0() [368973.448201] name 'fs/nfsfs' [368973.448203] Modules linked in: cdc_acm nfsv3 rpcsec_gss_krb5 8021q garp stp mrp llc cuse bnep rfcomm bluetooth nfsv4 nfsd auth_rpcgss nfs_acl nfs lockd sunrpc binfmt_misc fscache hp_wmi sparse_keymap snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm radeon snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sp5100_tco snd_seq_device serio_raw snd_timer ttm drm_kms_helper snd kvm edac_core soundcore drm edac_mce_amd k8temp i2c_algo_bit i2c_piix4 tpm_infineon shpchp wmi mac_hid parport_pc ppdev lp parport hid_generic usbhid hid tg3 psmouse ptp pps_core floppy ahci libahci [368973.448250] CPU: 1 PID: 15607 Comm: kworker/u8:1 Tainted: G W 3.13.0-37-generic #64-Ubuntu [368973.448252] Hardware name: Hewlett-Packard HP Compaq dc5850 Small Form Factor/3029h, BIOS 786F6 v03.14 11/15/2011 [368973.448257] Workqueue: netns cleanup_net [368973.448259] 0000000000000009 ffff88006a875c80 ffffffff8171ed09 ffff88006a875cc8 [368973.448263] ffff88006a875cb8 ffffffff8106773d 0000000000000000 0000000000000005 [368973.448265] ffffffffa05168a8 ffff88011b418b30 0000000000000100 ffff88006a875d18 [368973.448268] Call Trace: [368973.448275] [<ffffffff8171ed09>] dump_stack+0x45/0x56 [368973.448279] [<ffffffff8106773d>] warn_slowpath_common+0x7d/0xa0 [368973.448283] [<ffffffff810677ac>] warn_slowpath_fmt+0x4c/0x50 [368973.448286] [<ffffffff81229839>] remove_proc_entry+0x139/0x1b0 [368973.448313] [<ffffffffa04f64e2>] nfs_fs_proc_net_exit+0x62/0x70 [nfs] [368973.448322] [<ffffffffa04fc5b2>] nfs_net_exit+0x12/0x20 [nfs] [368973.448325] [<ffffffff8161b409>] ops_exit_list.isra.1+0x39/0x60 [368973.448327] [<ffffffff8161bc90>] cleanup_net+0x110/0x250 [368973.448331] [<ffffffff810839c2>] process_one_work+0x182/0x450 [368973.448334] [<ffffffff810847b1>] worker_thread+0x121/0x410 [368973.448337] [<ffffffff81084690>] ? rescuer_thread+0x430/0x430 [368973.448341] [<ffffffff8108b492>] kthread+0xd2/0xf0 [368973.448343] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0 [368973.448346] [<ffffffff8172f77c>] ret_from_fork+0x7c/0xb0 [368973.448349] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0 [368973.448351] ---[ end trace bb78fe56a3dcb679 ]--- ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-37-generic 3.13.0-37.64 ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 Uname: Linux 3.13.0-37-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sloeuillet 2501 F.... pulseaudio CurrentDesktop: Unity Date: Wed Oct 1 14:44:17 2014 HibernationDevice: RESUME=UUID=f74ad7c2-cbec-4b9b-8b27-d1b624315ca8 InstallationDate: Installed on 2013-09-16 (380 days ago) InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Hewlett-Packard HP Compaq dc5850 Small Form Factor ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=/dev/sda1 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-37-generic N/A linux-backports-modules-3.13.0-37-generic N/A linux-firmware 1.127.7 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-04-28 (156 days ago) dmi.bios.date: 11/15/2011 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 786F6 v03.14 dmi.board.name: 3029h dmi.board.vendor: Hewlett-Packard dmi.chassis.type: 4 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr786F6v03.14:bd11/15/2011:svnHewlett-Packard:pnHPCompaqdc5850SmallFormFactor:pvr:rvnHewlett-Packard:rn3029h:rvr:cvnHewlett-Packard:ct4:cvr: dmi.product.name: HP Compaq dc5850 Small Form Factor dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1376245/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
