Am 14.02.2013 05:39, schrieb Ben Hutchings: Hello Ben,
Squeeze is another story, but I think there is another problem as well. Previously we sometimes saw the backtrace, sometimes just the following message. [ 44.220000] VMCIUtil: Updating context id from 0x7a3c21d6 to 0x7a3c21d6 on event 0. [ 44.252000] Hotplug Mem Device [ 44.252000] System RAM resource 20000000 - 27ffffff cannot be added [ 44.252000] ACPI:memory_hp:add_memory failed [ 44.252000] ACPI:memory_hp:Error in acpi_memory_enable_device [ 44.252000] acpi_memhotplug: probe of PNP0C80:00 failed with error -22This is 'invalid argument' - wonder where that's coming from?[ 44.252000] driver data not found [ 44.252000] ACPI:memory_hp:Cannot find driver data [ 44.268000] Hotplug Mem Device [ 44.268000] init_memory_mapping: 0000000028000000-0000000030000000 [ 44.268000] 0028000000 - 0030000000 page 2M [ 44.280000] [ffffea00008c0000-ffffea0000abffff] PMD -> [ffff88001f200000-ffff88001f3fffff] on node 0 [ 44.280000] Hotplug Mem Device [ 44.284000] init_memory_mapping: 0000000030000000-0000000038000000 [ 44.284000] 0030000000 - 0038000000 page 2M [ 44.284000] [ffffea0000a00000-ffffea0000bfffff] PMD -> [ffff88001e400000-ffff88001e5fffff] on node 0 [ 44.340000] Hotplug Mem Device [ 44.340000] init_memory_mapping: 0000000038000000-0000000040000000 [ 44.340000] 0038000000 - 0040000000 page 2M We did not observe the backtrace anymore, but the "driver data not found" is still there. So I think the patch fixes the backtrace (allocation error) on both squeeze and wheezy, but squeeze has a second issue. I'll go through the bug reports and open a new one.Right, this is definitely a separate bug.
I finally found an article that describes this behaviour. Turns out that when this message appears, hotplug does not fail completely, but one memory bank (128MB) is missing.
http://communities.vmware.com/message/1299666#1299666I have opened Bug #700544 for this, it only seems to affect Squeeze. Don't know whether it is worth fixing that, the patch is more than a few lines and Squeeze will hopefully be oldstable soon.
Bernhard
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