I have experienced apparently the same hang-up today with kernel 3.5.0-22 of KUbuntu 12.10 I must note it happened previously from time to time, but I assumed this is some hardware issue until I looked in the linux logs. The relevant part of the ``syslog'' file looks like:
Jan 21 17:33:27 Eridanus kernel: [957585.389930] ------------[ cut here ]------------ Jan 21 17:33:27 Eridanus kernel: [957585.389939] WARNING: at /build/buildd/linux-3.5.0/kernel/watchdog.c:242 watchdog_overflow_callback+0x9a/0xc0() Jan 21 17:33:27 Eridanus kernel: [957585.389941] Hardware name: To be filled by O.E.M. Jan 21 17:33:27 Eridanus kernel: [957585.389942] Watchdog detected hard LOCKUP on cpu 4 Jan 21 17:33:27 Eridanus kernel: [957585.389943] Modules linked in: xt_recent btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs reiserfs ext2 parport_pc ppdev bnep rfcomm bluetooth binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT xt_LOG xt_limit xt_tcpudp xt_addrtype arc4 xt_state ip6table_filter ip6_tables nf_conntrack_netbios_ns eeepc_wmi asus_wmi mxm_wmi sparse_keymap nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack iptable_filter ip_tables kvm_amd x_tables kvm ghash_clmulni_intel aesni_intel cryptd aes_x86_64 snd_hda_codec_realtek psmouse edac_core edac_mce_amd serio_raw snd_seq_midi k10temp fam15h_power snd_rawmidi snd_hda_intel snd_hda_codec snd_seq_midi_event snd_hwdep rtl8192ce rtl8192c_common snd_seq rtlwifi snd_pcm nvidia(PO) snd_seq_device mac80211 snd_timer sp5100_tco snd i2c_piix4 cfg80211 soundcore snd_page_alloc wmi mac_hid it87 hwmon_vid lp parport uas us Jan 21 17:33:27 Eridanus kernel: b_storage hid_generic microcode r8169 usbhid hid Jan 21 17:33:27 Eridanus kernel: [957585.390004] Pid: 1517, comm: wpa_supplicant Tainted: P W O 3.5.0-21-generic #32-Ubuntu Jan 21 17:33:27 Eridanus kernel: [957585.390005] Call Trace: Jan 21 17:33:27 Eridanus kernel: [957585.390006] <NMI> [<ffffffff81051c1f>] warn_slowpath_common+0x7f/0xc0 Jan 21 17:33:27 Eridanus kernel: [957585.390015] [<ffffffff81051d16>] warn_slowpath_fmt+0x46/0x50 Jan 21 17:33:27 Eridanus kernel: [957585.390018] [<ffffffff8108a255>] ? sched_clock_cpu+0xc5/0x120 Jan 21 17:33:27 Eridanus kernel: [957585.390021] [<ffffffff810de320>] ? touch_nmi_watchdog+0x80/0x80 Jan 21 17:33:27 Eridanus kernel: [957585.390024] [<ffffffff810de3ba>] watchdog_overflow_callback+0x9a/0xc0 Jan 21 17:33:27 Eridanus kernel: [957585.390028] [<ffffffff8111a63d>] __perf_event_overflow+0x9d/0x230 Jan 21 17:33:27 Eridanus kernel: [957585.390030] [<ffffffff81117b04>] ? perf_event_update_userpage+0x24/0x110 Jan 21 17:33:27 Eridanus kernel: [957585.390033] [<ffffffff8111b154>] perf_event_overflow+0x14/0x20 Jan 21 17:33:27 Eridanus kernel: [957585.390037] [<ffffffff81024643>] x86_pmu_handle_irq+0xe3/0x130 Jan 21 17:33:27 Eridanus kernel: [957585.390041] [<ffffffff8168539d>] perf_event_nmi_handler+0x1d/0x20 Jan 21 17:33:27 Eridanus kernel: [957585.390043] [<ffffffff81684b41>] nmi_handle.isra.0+0x51/0x80 Jan 21 17:33:27 Eridanus kernel: [957585.390142] [<ffffffffa0746a20>] ? os_registry_init+0x290/0x290 [nvidia] Jan 21 17:33:27 Eridanus kernel: [957585.390145] [<ffffffff81684cf9>] do_nmi+0x189/0x360 Jan 21 17:33:27 EJan 21 17:37:23 Eridanus kernel: imklog 5.8.6, log source = /proc/kmsg started. I believe it is very simular to what was reported here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/917668 Title: system freeze ("hard LOCKUP"), warn_slowpath_common+0x7f in sock_aio_read To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/917668/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
