From Bugzilla Helper: User-Agent: Mozilla/4.75 [en] (WinNT; U) Description of problem: ia64/IPF (rx2600) system reboots during execution of "tar cvf fullbackup.tar /" command. The culprit is /proc filesystem. If the tar command excludes the /proc filesystem, the tar command is successful without a system reboot. It turns out the the problem is the ia-64 memory space with its embedded I/O memory and holes. If you read one of these invalid memory locations you will MCA. For example, just wc /proc/kcore you will generate an MCA and reboot. Version-Release number of selected component (if applicable): tar-1.13.25-4.AS21.0 How reproducible: Always Steps to Reproduce: 1. Execute "tar cvf fullbackup.tar /" 2. System would reboot during the backup of /proc filesystem. 3. Actual Results: Automatic System Reboot Expected Results: System should NOT automatically reboot during backup of /proc filesystem. Additional info
[root@netuxipf root]# cat /etc/redhat-release Red Hat Linux Advanced Server release 2.1AS (Derry) [root@netuxipf root]# uname -a Linux netuxipf 2.4.18-e.31smp #1 SMP Wed May 21 17:47:59 EDT 2003 ia64 unknown
Reading of memory holes and other I/O space is expected to MCA.