Red Hat Bugzilla – Bug 75348
Machine crashes when accessing /proc/scsi/aic7xxx/0
Last modified: 2007-04-18 12:47:17 EDT
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Description of problem:
When /proc/scsi/aic7xxx/0 is accessed, the machine resets and reboots, with a message about NMI or memory error from the prom just before the grub menu. This happens only on kernels 2.4.18-10 and 2.4.18-5. Kernel 2.4.18-4 doesn't exhibit the problem. The version of the aic7xxx driver is 6.2.6 in both the failing kernels.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Actual Results: Machine resets and starts booting again.
Expected Results: should see contents of /proc/scsi/aic7xxx/0 on screen. This would be scsi controller configuration/statistics.
The machine in question is a Dell PowerEdge 1300 600Mhz, the SCSI controller in question is an AHA-2940-U2/U2W /7890/7891 (rev 1)
from /proc/pci. All disks are on that controller.
This is most likely the "proc reads serial eeprom" bug. What version of
the aic7xxx driver are you using? This was corrected in 6.2.8.
The version of the aic7xxx driver was 6.2.6 in the original report, and I have
since updated to kernel 2.4.18-17.7.x which has aic7xxx version 6.2.8, and
I no longer have the problem, for that kernel or the kernel 2.4.18-19.7.x,
which I am now running.
Kernel 2.4.18-17.7.x came out very shortly after this bug was reported, and I
should have updated this entry then, but I lost track of it. Sorry.
Resolved in aic7xxx driver version 6.2.8. Resolution confirmed by