We update the server, the RHAS 4 was part of the update, before update, the server works fine, but after update the OS, and other components, from time to time, we saw the OS crash and restart, but from the system log, it didn't have any direct evidence of the error message.
We suspect that the memory violation may be the cause of the problem, but really surprise to see the OS restart, for most of the past experience, the memory violation will generate the core dump, but not severe enough to bring down the whole system.
Please share with us your experience, any idea of how to trace this problem, how to narrow down the process, thanks.