I seem to have this bug also. While this is on a production server, I
have some flexibility in rebooting it.
I can note a few issues:
1. The kernel bug only happens with Java (tested both open-jdk7 and
oracle8)
2. The java processes block and cannot be killed
3. Any process that tries to inspect the java process becomes blocked (e.g.
top, ps, ...). an strace of a ps:
open("/proc/41126/status", O_RDONLY) = 6
read(6, "Name:\tjava\nState:\tD (disk sleep)"..., 1024) = 870
close(6) = 0
open("/proc/41126/cmdline", O_RDONLY) = 6
read(6,
[BLOCKS there]
4. As long as no queries are done on the blocked java processes,
everything works (though the load of the machine is apparently high)
Tell me what you need done to test this, and I will do it
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https://bugs.launchpad.net/bugs/1315736
Title:
[Dell PowerEdge R720] Machine Check Exception
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