I have just tested kernel 2.5.47 on my RH8 system and have this oops.

System: Dual AthlonMP 1200Mhz, Tyan Thunder K7, 512Mb Registered ECC DDR 
SDRAM
	/	IDE Quantum FireballPlusAS40 (AMD on board IDE)
	/opt	\
	/home	|	RAID0 md devices on 4x Quantum Atlas U160
	/usr	|	(onboard Adaptec SCSI CHANNEL A)
	/var	/

Kernel compiled for K7 with rh8 gcc3.2-7