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    SubjectRe: 2.6.30-git(16 and 17) system hangs after resume from suspend to disk, mce related?
    From
    2009/6/22 Andi Kleen <ak@linux.intel.com>:

    > Was this with check_interval = 1 ?
    >
    > Do you see something when you set it to 60 or so (you need to wait 60
    > seconds)?

    I try check_interval=10 before suspend fot machinecheck0 and
    mechinecheck1. Suspend to disk works (not hangs like for "1"). System
    hangs few seconds after resume:
    [...]
    [ 68.071137] CPU1 is up
    [ 68.073336] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level,
    low) -> IRQ 16
    [ 68.126110] usb usb3: root hub lost power or was reset
    [ 68.126249] ehci_hcd 0000:00:1d.7: PME# disabled
    [ 68.132082] r8169 0000:02:00.0: PME# disabled
    [ 68.132935] serial 00:07: activated
    [ 68.136433] r8169: eth0: link up
    [ 68.287417] ata2.01: ACPI cmd ef/03:0c:00:00:00:b0 filtered out
    [ 68.290331] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 filtered out
    [ 68.302257] ata1.00: ACPI cmd ef/03:45:00:00:00:a0 filtered out
    [ 68.324357] ata1.00: configured for UDMA/133
    [ 69.656127] btusb 4-1:1.0: no reset_resume for driver btusb?
    [ 70.708015] usb 5-2: reset low speed USB device using uhci_hcd and address 3

    It seems, that resume isn't resume completely.


    Also I try 20 seconds and find this in netconsole:
    [ 532.576128] BUG: soft lockup - CPU#1 stuck for 61s! [ksensors:2670]
    [ 532.576128] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit snd[
    532.576128] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
    [ 532.576128] [<c01a266d>] sys_read+0x3d/0x70
    ^[[B^[[A[ 598.075129] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_seq_device[ 598.075129] EAX: 00000001 EBX: c28023e0 ECX: 00000292
    EDX: 000008fb
    [ 598.075129] [<c01a24f9>] vfs_read+0x99/0x150
    [ 663.573129] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_timer[ 663.573129] EIP is at generic_exec_single+0x5e/0x90
    [ 663.573129] [<c01a24f9>] vfs_read+0x99/0x150
    [ 729.071129] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_seq[ 729.071129] EIP: 0060:[<c015979a>] EFLAGS: 00000202 CPU: 1
    [ 729.071129] [<c0226aaf>] ? security_file_permission+0xf/0x20
    [ 794.569130] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    iptable_filter nf_defrag_ipv4 fuse coretemp loop bluetooth
    snd_hda_codec[ 860.068130] BUG: softlockup - CPU#1 stuck for 61s!
    [ksensors:2670]
    [ 860.068130] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    nf_conntrack x_tables dm_mod hwmon_vid btusb snd_hda_intel[
    925.566131] Modules linked in: i915drm i2c_algo_bit video backlight
    output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    iptable_filter nf_conntrack x_tables dm_mod loop btusb snd_hda_intel[
    991.064131] Modules linked in: i915 drm i2c_algo_bit video backlight
    output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state snd_seq[
    991.064131] EIP: 0060:[<c0159798>] EFLAGS: 00000202 CPU: 1
    [ 991.064131] [<c0226aaf>] ? security_file_permission+0xf/0x20
    [ 1056.562131] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_seq_midi_event[ 1056.562131] EIP: 0060:[<c015979a>] EFLAGS:
    00000202 CPU: 1
    [ 1056.562131] [<c01ec20d>] sysfs_read_file+0x7d/0x110
    [ 1122.061132] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_seq_device[ 1122.061132] EAX: 00000001 EBX: c28023e0 ECX: 00000292
    EDX: 000008fb
    [ 1122.061132] [<c01a24f9>] vfs_read+0x99/0x150
    [ 1187.559132] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_seq_device[ 1187.559132] EAX: 00000001 EBX: c28023e0 ECX: 00000292
    EDX: 000008fb
    [ 1187.559132] [<c01a24f9>] vfs_read+0x99/0x150
    [ 1253.057133] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_timer[ 1253.057133] EIP is at generic_exec_single+0x5e/0x90
    [ 1253.057133] [<c01a24f9>] vfs_read+0x99/0x150
    [ 1318.555133] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_seq[ 1318.555133] EIP is at generic_exec_single+0x5a/0x90
    [ 1318.555133] [<c0226aaf>] ? security_file_permission+0xf/0x20
    [ 1384.054133] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd[ 1384.054133] EAX: 00000001 EBX: c28023e0 ECX: 00000292 EDX:
    000008fb
    [ 1384.054133] [<c01ec190>] ? sysfs_read_file+0x0/0x110
    [ 1449.552134] Modules linked in: i915 drm i2c_algo_bit video
    backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit xt_state
    snd_seq_device[ 1449.552134] EAX: 00000001 EBX: c28023e0 ECX: 00000292
    EDX: 000008fb
    [ 1449.552134] [<c01a24f9>] vfs_read+0x99/0x150

    Message appears very slowly.


    --
    Maciej Rutecki
    http://www.maciek.unixy.pl


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