On 11.02.2013 02:09, Ben Hutchings wrote: Hello Ben,
> Control: tag -1 upstream moreinfo > > On Wed, 2013-02-06 at 18:02 +0100, Bernhard Schmidt wrote: >> Package: src:linux >> Version: 3.2.35-2 >> Severity: normal >> >> Adding additional RAM to a virtual machine running Debian Wheezy on >> VMware ESXi 5.0 often, but not always leads to the attached backtrace. >> >> If that happens, the system has considerably less new (offline) memory >> banks in /sys/devices/system/memory/memory* than it should have, and >> setting all available memory banks online does not give all the memory >> expected. > [...] > > Please test whether the attached patch fixes this. Instructions for > building a patched kernel package are in the Debian kernel handbook: > <http://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official>. It looks good on Wheezy now. Hard to tell for sure because it did not always happen, especially not with freshly booted devices, but we did install the kernel on a few Wheezy boxes and put load on them, and I did not observe the backtrace anymore. 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 -22 [ 44.252000] [ 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. Bernhard -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/511b7ba7.6050...@lrz.de
