thakur@zerkalo.harvard.edu (Manavendra K. Thakur) (06/14/90)
I need an explanation, please, of the following error message. My machine (3/160, SunOS 4.1, 4MB, diskful) just died with the following error: panic: wrong pmg syncing file systems... [15] 4 [15] 2 [13] [10] [5] done . . (Ususal messages about dumping pages) . rebooting... After the machine rebooted, I looked in the /var/adm/messages file and found the following: vmunix: WRONG PAGE MAP GROUP FOUND FOR VIRTUAL ADDRESS 0x0fb80000! vmunix: PMG 0x0e0b6c20 claims VA 0x0f020000 is PMEG 0x000000ef (hardware) vmunix: PMG 0x0e0b6020 claims VA 0x0fb80000 is PMEG 0x0000006f (kernel) vmunix: PMG 0x0e0b6020 claims VA 0x0fb80000 is PMEG 0x0000006f (user) vmunix: panic: wrong pmg and then the syncing file systems etc etc messages listed above. Can anybody explain what these error messages mean? Does this indicate a hardware failure of any kind? This is the first time my machine has exhibited such an error (to the best of my knowledge), and I've been running SunOS for since the beginning of May. Please don't suggest that I provide a stack backtrace. I can't provide such a backtrace because I don't have the necessary vmcore files (the machine rebooted spontaneously). Any and all suggestions, hints, RTFMs, etc are welcomed. I'm completely in the dark as to what these messages might mean. Manavendra K. Thakur System Manager, Internet: thakur@zerkalo.harvard.edu High Energy Division, thakur@eddie.mit.edu Harvard-Smithsonian Center for BITNET: thakur@cfa.BITNET Astrophyics DECNET: CFA::thakur UUCP: ...!uunet!mit-eddie!thakur