on 24/01/2009 13:00 Andriy Gapon said the following: [snip] > Additional info: > I recently added some new memory to this system. > The memory survived several passes of memtest86 before booting to > FreeBSD. It also survived one pass after the incident. > Still I wouldn't exclude a possibility of it being bad.
I think that I established that the crash was because of hardware issue. I had another panic at a different place but with the similar diagnostics - bad pointer passed to a call. Fortunately, the second time the pointer was to a well-known long-lived object. So I was able to compare the bad pointer to an actual address. It turned out that a single bit was flipped. Then I realized that in both cases I saw panics after "very cold" boots, i.e. the system was powered down for more than 1 hour before the boot. So I performed memtest86 run again, this time also after a long power-off. And it reported lots of errors. I restarted memtest86 10 minutes later and then it could not find any errors in any tests. Previously I heard about problems with hardware running hot, but not with it being "cold". I put the word in quotes, because the system is in a room with normal room temperature. Any guesses what hardware part might be acting up like this? -- Andriy Gapon _______________________________________________ freebsd-hardware@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hardware To unsubscribe, send any mail to "freebsd-hardware-unsubscr...@freebsd.org"
