[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: downgrading woody kernel 2.4 -> 2.2


> > experiencing several crashes. I think it's because the 2.4 kernel (but
> > if not, just tell me please ;), so I decided to downgrade the kernel to
> > 2.2 (whis is available in woody).
> It's not possible for us to even comment on the likely cause of your problems.
    Ok, to be more specific. The customer ran a script nightly from
cron, and the script is very resource intensive. 
  (commandline PHP script, with high Postgres usage).

    After the script started, various problems happened, often the whole
sytem died. 

    I found entries like this in the logfiles:
: Code: ff 0b 0f 94 c0 84 c0 0f 84 88 00 00 00 8b 43 0c 50 e8 40 66
:  <1>Unable to handle kernel paging request at virtual address 0000c080
:  printing eip:
: c011b676
: *pde = 00000000
: Oops: 0002
: CPU:    0
: EIP:    0010:[exit_sighand+26/80]    Not tainted
: EFLAGS: 00010002
: eax: 00000000   ebx: c932c000   ecx: c932c264   edx: 0000c080
: esi: c932c000   edi: 0000000b   ebp: 00007960   esp: c932dc78
: ds: 0018   es: 0018   ss: 0018
: Process postmaster (pid: 13023, stackpage=c932d000)
: Stack: 00000000 c0116ef5 c932c000 00000002 00000002 c01113c8 c010704b
:        00000000 c0111717 c020bd1e c932dd54 00000002 c932c000 00000002
:        00008080 00000000 c016c6ce c932c000 c00bbac0 00000001 00030001
: Call Trace: [do_exit+349/460] [do_page_fault+0/1176] [die+79/80]
:    [set_cursor+110/128] [vt_console_print+718/736]
:    [do_exit+194/460] [do_page_fault+0/1176] [die+79/80]
:    [page_cache_release+44/48] [free_page_and_swap_cache+49/52]
:    [die+79/80] [do_page_fault+847/1176] [do_page_fault+0/1176]
:    [generic_file_read+129/308] [error_code+52/60] [fget+17/40]

  But the same happened with the other daemons too...

  The system is a PIII@833 with 256Mb of ECC SDRAM. 
  I was using a self compiled 2.4.17, but the same happened with 2.4.9.

  Well, I compiled a 2.2.20 kernel, and installed it with no problems.
It seems to be stable now, but it needs some more testing. (I started
the script, runs smoothly). 

  I don't know if you get something usable from the above log, if not,
please tell me what should I send.

  Best Regards,
    David Biro

> To be able to make any guess at the cause of your problems we need to know
> the exact kernel version, the details of your hardware, and some information
> on what your server does would be handy (but is not as important).  Without
> such information it's not even worth guessing.
> FWIW All my most important machines run 2.4.x machines and are quite
> reliable.  Currently the only reliability issue I have in any of my machines
> is directly related to a binary-only kernel module.  Apart from that all my
> machines are capable of running for months at a time (apart from power
> failures, kernel upgrades, hardware changes, etc).
> --
> Signatures >4 lines are rude.  If you send email to me or to a mailing list
> that I am subscribed to which has >4 lines of legalistic junk at the end
> then you are specifically authorizing me to do whatever I wish with the
> message (the sig won't be read).

 [ http://www.wh.hu - webhosting - webdesign  -  http://www.wh.hu ]
 [ mailto:dave@wh.hu   -            mailto:dave@d-eyes.pganet.com ]

Reply to: