Red Hat Bugzilla – Bug 89844
(SCSI AACRAID)aacraid SCSI bus reset leads to reiserfs_panic
Last modified: 2005-10-31 17:00:50 EST
Description of problem: Systems are Dell PowerEdge 2650 with PERC 3/Di (aacraid) doing RAID5 and dual 2.4 Xeon with HyperThreading. 3 identical PE2650's all exhibit this problem. After loading down each logical CPU with a process (eg. setiathome) the aacraid SCSI device will eventually reset and cause a kernel panic. Note that there is no significant disk load required to reproduce. Seeing as how it is reproducible on 3 machines on RAID5, it is not likely related to defective disks even though it appears that way. Version-Release number of selected component (if applicable): kernel-2.4.18-27.7.xsmp How reproducible: From a fresh 7.3 installed on reiserfs, try running multiple setiathome processes (1 per logical CPU). Come back in a few hours (overnight?). Steps to Reproduce: 1. Basic install of Red Hat 7.3, upgrade and boot kernel-2.4.18-27.7.xsmp (i686). Also upgraded to glibc-2.2.5-43 (i686), but nothing else installed or changed other than that. Filesystems are reiserfs. (/dev/sda1 = /boot, /dev/sda2 = /, /dev/sda3 = /usr, /dev/sda4 = not mounted yet). 2. Put load on each logical CPU (eg. setiathome). 3. Come back later (duration undetermined however overnight seems to be long enough). Machine will be frozen. Have been able to reproduce this several times. Actual results: aacraid: Host adapter reset request. SCSI hang ? SCSI disk error : host 0 channel 0 id 0 lun 0 return code = 6000000 ... kernel BUG at prints.c:344! invalid operand: 0000 ... EIP is at reiserfs_panic ..... [ See attachments ] Expected results: No process should be able to reliably panic the kernel. Also expect file system to be intact or at least repairable on reboot. Additional info: Attached are screen captures of the kernel panic message taken from the remote console. 2 machines are represented here and JPG's are numbered in order. dev 08:02 is the root filesystem, where the setiathome process is running from. BIOS and firmware are updated to newest (A10 and PERC 3/Di = 2.7-1). Also is important to note that one particular time this happened the filesystems became corrupted beyond repair. That particular time I was using LVM in /dev/sda4 and that volume became unusable (would segfault vgscan), not to mention that /dev/sda2 was unrecoverable by reiserfsck.
Created attachment 91366 [details] Kernel panic (page 1)
Created attachment 91367 [details] Kernel panic (page 2)
Created attachment 91368 [details] Kernel panic (page 3)
Created attachment 91369 [details] Kernel panic (page 4) This completes the first 4 pages from the first kernel panic. I have captures from the other machine but they're pretty close to the same thing. Available on request. Sorry for the multiple JPG attachments, this was the only way to retrieve the kernel panic from the machine in this state.
Jpegs are fine. Currently testing newer aacraid drivers with adaptec
Thanks for the bug report. However, Red Hat no longer maintains this version of the product. Please upgrade to the latest version and open a new bug if the problem persists. The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, and if you believe this bug is interesting to them, please report the problem in the bug tracker at: http://bugzilla.fedora.us/