Instability issue with FC5 on dual-core system.

[Hans Kristian Rosbach]

On Thu, 2006-06-29 at 13:21 -0400, Alan Cox wrote:
> On Thu, Jun 29, 2006 at 06:39:34PM +0200, Hans Kristian Rosbach wrote:
> > Message from syslogd at m1 at Thu Jun 29 00:56:55 2006 ...
> > m1 kernel: CR2: 0000000000000020
> > Unable to handle kernel NULL pointer dereference at 0000000000000020
> 
> Does the box have ECC memory ?

No, but it does not fail memtest86+ (the version that is on the FC5 cd)
It is unstable on both of these atleast:
kernel-2.6.16-1.2133_FC5
kernel-2.6.17-1.2139_FC5


We are also having trouble with an IBM 4x P3-xeon 700Mhz box using the
same two kernels. It's located 10 hours from here so I'm not very likely
to get access to oops messages. (their technician is on vacation so I
have to coach the whoever-is-available staff when something goes wrong).
But this does come up on boot:

setup_irq: irq handler mismatch
 <c0447c64> setup_irq+0xef/0xfc  <c0540601> serial8250_interrupt
+0x0/0xe2
 <c0447dcc> request_irq+0x6d/0x89  <c0540269> serial8250_startup
+0x2f3/0x434
 <c053cf5b> uart_startup+0x65/0x10a  <c053d1c1> uart_open+0x1c1/0x3d0
 <c0524475> init_dev+0x3c6/0x4f6  <c0525881> tty_open+0x181/0x2d4
 <c046ed80> chrdev_open+0x182/0x19e  <c046ebfe> chrdev_open+0x0/0x19e
 <c04666db> __dentry_open+0xc6/0x1aa  <c0466823> nameidata_to_filp
+0x19/0x28
 <c046685d> do_filp_open+0x2b/0x31  <c047b686> dput+0xf0/0x210
 <c0466955> do_sys_open+0x3c/0xa9  <c04669ef> sys_open+0x16/0x18
 <c0403d2f> syscall_call+0x7/0xb

Not sure whether it's related or not.

00:00.0 Host bridge: Broadcom CNB20HE Host Bridge (rev 21)
00:00.1 Host bridge: Broadcom CNB20HE Host Bridge (rev 01)
00:00.2 Host bridge: Broadcom CNB20HE Host Bridge
00:00.3 Host bridge: Broadcom CNB20HE Host Bridge
00:05.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970
[PCnet32 LANCE] (rev 44)
00:06.0 VGA compatible controller: S3 Inc. Savage 4 (rev 04)
00:0f.0 ISA bridge: Broadcom OSB4 South Bridge (rev 4f)
00:0f.1 IDE interface: Broadcom OSB4 IDE Controller
00:0f.2 USB Controller: Broadcom OSB4/CSB5 OHCI USB Controller (rev 04)
02:06.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169
Gigabit Ethernet (rev 10)
05:02.0 PCI bridge: IBM PCI-X to PCI-X Bridge (rev 02)
06:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID (rev 02)

-HK