friday 13 bug?

Hello,

I personally ran into the exact same thing with another customer.
They are running RedHat 8.0 with (2.4.20 at the time). We had to upgrade
them to 2.4.23 and reboot. Worked like a charm. This was about two months
ago. I swear it was almost the exact same error.

Sincerely,

Joshua D. Drake

On Sat, 14 Feb 2004, zohn_ming wu wrote:

Kernel 2.4.23 on redhat 8.0Please cc any response from
linux kernel list. TIA.

On or about 7:50am Friday 13 2004 my postgresql server
breaks down. I can ssh and use "top" and "ps" but
postgresql stops accepting connection. A small perl
script that logs system load average also hangs. I
cannot "kill -9" any hang processes including
postgreqsql postmaster process.

I then check dmesg and found error message that I copy
and paste at the bottom.

I finally issued reboot but reboot also didn't work
and I had to push the reset button.

AMD XP 2500+ with 1.5GB Memory. Postgresql data lives
on a software raid 1 device.

Kernel 2.4.23 on redhat 8.0

Postgresql 7.4

The last time server was rebooted was about 60 days
ago when I upgraded the kernel

Can someone suggest anything to help me avoid this
type of breakdown? I tried to post the message
yesterday but postgresql list wasn't responding at all
to subscription request.

------------

swap_free: Bad swap file entry 00000004
kernel BUG at buffer.c:539!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0138e8e>] Not tainted
EFLAGS: 00010282
eax: cfd10a40 ebx: 00000002 ecx: e75f6ac0 edx:
c02c548c
esi: e75f6ac0 edi: 00000001 ebp: e75f6ac0 esp:
f74efe60
ds: 0018 es: 0018 ss: 0018
Process postmaster (pid: 457, stackpage=f74ef000)
Stack: 00000002 c01397ab e75f6ac0 00000002 e75f6ac0
00001000 c013a326 e75f6ac0
00001000 00000000 00420000 00000000 c2166b40
f7822980 c013aaef f7822980
c2166b40 00000000 00001000 c2166b40 f7822980
00001000 f7822a34 c016064c
Call Trace: [<c01397ab>] [<c013a326>] [<c013aaef>]
[<c016064c>] [<c0160310>]
[<c012af71>] [<c012b4f6>] [<c015d8a9>] [<c0137753>]
[<c010733f>]

Code: 0f 0b 1b 02 17 e0 23 c0 8b 02 85 c0 75 07 89 0a
89 49 24 8b
linux-kernel@vger.kernel.orglinux-kernel@vger.kernel.orglinux-kernel@vger.kernel.org

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Co-Founder
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The wheel's spinning but the hamster's dead

zohn_ming wu wrote:

swap_free: Bad swap file entry 00000004

Do you use ECC memory, is ECC enabled in the BIOS [and does it work -
some vendors lie about ECC support]?

I would bet that it's a soft memory error: 00000000 means not used. One
bit differs, and the kernel complains about the invalid value. I think
the following oops is a side effect of the bad swap entry.
Do you have timestaps in the system log? Is the swap error just before
the BUG in buffer.c?

--
Manfred