2.6.7 SMP kernel crash under load.

From: Greg Trounson (gregt_at_maths.otago.ac.nz)
Date: 09/13/04

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    Date: Mon, 13 Sep 2004 10:43:10 +1200
To: For users of Fedora Core releases <fedora-list@redhat.com>

    Gidday,

    I have a dual Athlon 2600+ system running Fedora Core 2, updated to
    kernel 2.6.7.
    Recently the machine has locked up every few days (3/9/04, 9/9/04,
    11/9/04). Every time it has been just after 4am, the time that
    cron.daily is set to activate. In the case below, it crashed while
    running updatedb, but the actual process is not the same every time.

    This coincides with /etc/cron.daily, which consists of:
    00-logwatch 0anacron inn-cron-expire makewhatis.cron rpm slrnpull-expire
    tetex.cron
    00webalizer cyrus-imapd logrotate prelink slocate.cron squirrelmail.cron
    tmpwatch

    I have run memtest86 on this machine for several days and found no problems.

    Relevant log message follows:

    Sep 3 04:08:03 vector kernel: Unable to handle kernel paging request at
    virtual address ee67494e
    Sep 3 04:08:03 vector kernel: printing eip:
    Sep 3 04:08:03 vector kernel: 42c45e14
    Sep 3 04:08:03 vector kernel: *pde = 00000000
    Sep 3 04:08:03 vector kernel: Oops: 0000 [#1]
    Sep 3 04:08:03 vector kernel: PREEMPT SMP
    Sep 3 04:08:03 vector kernel: Modules linked in: snd_pcm_oss
    snd_mixer_oss nls_utf8 cifs snd_ens1371 snd_rawmidi snd_seq_device
    snd_pcm snd_page_alloc snd_timer snd_ac97_codec gameport snd soundcore
    nvidia w83627hf eeprom i2c_sensor i2c_isa i2c_amd756 i2c_core parport_pc
    lp parport autofs4 nfs lockd sunrpc e100 mii ipt_LOG ipt_limit ipt_state
    ipt_REJECT iptable_filter iptable_nat ip_conntrack iptable_mangle
    ip_tables floppy sg scsi_mod dm_mod uhci_hcd ehci_hcd button battery
    asus_acpi ac ext3 jbd
    Sep 3 04:08:03 vector kernel: CPU: 0
    Sep 3 04:08:03 vector kernel: EIP: 0060:[<42c45e14>] Tainted: P
    Sep 3 04:08:03 vector kernel: EFLAGS: 00010246 (2.6.7-1.467custom)
    Sep 3 04:08:03 vector kernel: EIP is at cifs_readdir+0x9c4/0xdf0 [cifs]
    Sep 3 04:08:03 vector kernel: eax: 42c1e4a0 ebx: 00000000 ecx: ee674912
    edx: 41c64da0
    Sep 3 04:08:03 vector kernel: esi: 00000029 edi: 193c8bd6 ebp: 06c40860
    esp: 403b4ee8
    Sep 3 04:08:03 vector kernel: ds: 007b es: 007b ss: 0068
    Sep 3 04:08:03 vector kernel: Process updatedb (pid: 19294,
    threadinfo=403b4000 task=2c538c30)
    Sep 3 04:08:03 vector kernel: Stack: 403b4f48 05b88e24 04f991a0 42c1e4a0
    403b4fa0 42c1e4a0 403b4f30 403b4f34
    Sep 3 04:08:03 vector kernel: 00004f30 00004f30 05b88000 ee674912
    41c0bde0 41c64da0 00057769 00000000
    Sep 3 04:08:03 vector kernel: 00000000 00000000 00000001 00000000
    002e1806 00000001 4137106c 36b015e0
    Sep 3 04:08:03 vector kernel: Call Trace:
    Sep 3 04:08:03 vector kernel: [<0217c33a>] vfs_readdir+0xba/0xe0
    Sep 3 04:08:03 vector kernel: [<0217c750>] filldir64+0x0/0x180
    Sep 3 04:08:03 vector kernel: [<0217c943>] sys_getdents64+0x73/0xc5
    Sep 3 04:08:03 vector kernel: [<0217c750>] filldir64+0x0/0x180
    Sep 3 04:08:03 vector kernel: Code: 8b 41 3c d1 e8 89 44 24 08 89 c8 83
    c0 40 89 44 24 04 89 04

    'Tainted' is due to the Nvidia driver being installed.

    any ideas what could be causing this? Kernel bug?
    thanks,
    Greg 

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