Red Hat Bugzilla – Bug 27993
aic7xxx module crashes on boot
Last modified: 2007-04-18 12:31:31 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux 2.4.0-0.99.23smp i686; en-US; 0.8)
Using the kernel-smp-2.4.0-0.99.23 package (i686), the aic7xxx.o module
crashes insmod on boot (as it loads the module from the ramdisk). Lots of
register dump foo I will cut-n-paste by paper and pencil if you want it -
it starts off with
"NMI Watchdog detected LOCKUP on CPU1, registers:"
Note that my scsi controller is an AIC-7899 U160M, which seems to feature
prominantly in the bug list.
Using the aix7xxx_old module instead works. Booting with
kernel-smp-2.2.17-14, the stock aix7xxx works.
Steps to Reproduce:
1. Try to boot using kernel-smp-2.4.0-0.99.23
Actual Results: insmod locks up a CPU as it loads the aic7xxx module from
the ramdisk. Boot stops, system hangs.
Expected Results: It should have loaded the scsi driver, mounted the
system disk, and booted.
This is actually a bug in the NMI lockup detection code. The latest kernel
builds should have this solved already. Please verify that this is still a
problem with the latest kernel, and if so re-open this report (note, it only
effects aic7xxx_new and not aic7xxx now because it only happens with drivers
that use the new SCSI error handling code and the original aic7xxx driver uses
the old code).