Public bug reported:
I experience hangs on my laptop running Kubuntu Jaunty amd64. Sometimes
the laptop just stops responding at all, i can't do anything but hard
power-off... Sometimes however i see messages about hanging CPU like
this:
Sep 27 20:57:27 pq-phlap kernel: [83369.612501] Modules linked in: hidp
aes_x86_64 aes_generic binfmt_misc bnep ipt_MASQUERADE iptable_nat bridge stp
vmnet ppdev parport_pc
vmblock vmci vmmon input_polldev ipt_REJECT ipt_LOG xt_comment xt_limit
xt_tcpudp xt_state ipt_addrtype ip6table_filter ip6_tables nf_nat_irc
nf_conntrack_irc nf_nat_ftp n
f_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack
iptable_filter ip_tables x_tables joydev sbp2 lp parport snd_hda_intel arc4
snd_pcm_oss snd_mixer_oss e
cb snd_pcm snd_seq_dummy snd_seq_oss pcmcia iwlagn iwlcore snd_seq_midi
thinkpad_acpi snd_rawmidi led_class snd_seq_midi_event psmouse snd_seq
snd_timer mac80211 sdhci_pci
yenta_socket snd_seq_device video serio_raw ricoh_mmc sdhci pcspkr nvram
fglrx(P) rsrc_nonstatic pcmcia_core snd soundcore snd_page_alloc cfg80211
output iTCO_wdt iTCO_vend
or_support btusb intel_agp ohci1394 ieee1394 tg3 fbcon tileblit font bitblit
softcursor
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] CPU 1:
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] Modules linked in: hidp
aes_x86_64 aes_generic binfmt_misc bnep ipt_MASQUERADE iptable_nat bridge stp
vmnet ppdev parport_pc
vmblock vmci vmmon input_polldev ipt_REJECT ipt_LOG xt_comment xt_limit
xt_tcpudp xt_state ipt_addrtype ip6table_filter ip6_tables nf_nat_irc
nf_conntrack_irc nf_nat_ftp n
f_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack
iptable_filter ip_tables x_tables joydev sbp2 lp parport snd_hda_intel arc4
snd_pcm_oss snd_mixer_oss e
cb snd_pcm snd_seq_dummy snd_seq_oss pcmcia iwlagn iwlcore snd_seq_midi
thinkpad_acpi snd_rawmidi led_class snd_seq_midi_event psmouse snd_seq
snd_timer mac80211 sdhci_pci
yenta_socket snd_seq_device video serio_raw ricoh_mmc sdhci pcspkr nvram
fglrx(P) rsrc_nonstatic pcmcia_core snd soundcore snd_page_alloc cfg80211
output iTCO_wdt iTCO_vend
or_support btusb intel_agp ohci1394 ieee1394 tg3 fbcon tileblit font bitblit
softcursor
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] Pid: 4133, comm: master
Tainted: P 2.6.28-15-generic #49-Ubuntu
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] RIP: 0010:[<ffffffff80420568>]
[<ffffffff80420568>] __read_lock_failed+0x8/0x20
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] RSP: 0018:ffff88022b05dd50
EFLAGS: 00000297
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] RAX: ffff88022b032cc0 RBX:
ffff88022b05dd58 RCX: ffff88022b05de38
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] RDX: 0000000000000101 RSI:
ffff880100795000 RDI: ffff88022fdbb344
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] RBP: ffff88022b05dd58 R08:
0000000000000000 R09: ffff880228d23480
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] R10: 0000000000000000 R11:
0000000000000246 R12: ffff880028053970
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] R13: ffff88022b032cf8 R14:
000000000000000c R15: 0000000000000000
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] FS: 00007fb9bbc1d6f0(0000)
GS:ffff88023b802d80(0000) knlGS:0000000000000000
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] CS: 0010 DS: 0000 ES: 0000
CR0: 000000008005003b
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] CR2: 00007f10d6169000 CR3:
000000022fc3b000 CR4: 00000000000006a0
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] Call Trace:
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff8069b6cf>] ?
_read_lock+0xf/0x20
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802f3cb0>]
do_path_lookup+0x50/0x200
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff803d0f81>] ?
security_file_alloc+0x11/0x20
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802f3f35>]
path_lookup_open+0x65/0xd0
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802f4e49>]
do_filp_open+0xb9/0x930
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802fecb7>] ?
alloc_fdtable+0x57/0x150
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802feaff>] ?
copy_fdtable+0xaf/0xd0
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802ff1cb>] ?
expand_fdtable+0xbb/0x130
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802ff28f>] ?
expand_files+0x4f/0x60
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802ff3c1>] ?
alloc_fd+0x121/0x150
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802e5a41>]
do_sys_open+0x81/0x150
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff802e5b3b>]
sys_open+0x1b/0x20
Sep 27 20:57:27 pq-phlap kernel: [83369.612504] [<ffffffff8021253a>]
system_call_fastpath+0x16/0x1b
I have a dual-core CPU, top shows that one of the CPUs is at 100%, the
other still responds... however logging in and starting commands can
cause complete lockups... running sessions will continue to run (i can
dmesg, top, cat /var/log/messages) but e.g. accessing the network fails.
I cannot pinpoint the problem to any programs, it happens with different
programs running and under different loads (sometimes under heavy usage,
sometimes when the laptop is sitting idle over night.)
I would be happy to report more information if needed.
$ uname -a
Linux pq-phlap 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 19:25:34 UTC 2009
x86_64 GNU/Linux
$ cat /proc/version_signature
Ubuntu 2.6.28-15.49-generic
** Affects: ubuntu
Importance: Undecided
Status: New
--
CPU hangs
https://bugs.launchpad.net/bugs/437811
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