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On Sat, 2008-03-08 at 09:22 +0100, Ingo Molnar wrote: > * Frank Sorenson <frank@tuxrocks.com> wrote: > > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Frank Sorenson wrote: > > > I did some additional debugging, and I believe you're correct about it > > > being specific to my system. The system seems to run fine until some > > > time during the boot. I booted with "init=/bin/sh" (that's how the > > > system stayed up for 9 minutes), then it died when I tried starting > > > things up. I've further narrowed the OOM down to udev (though it's not > > > entirely udev's fault, since 2.6.24 runs fine). > > > > > > I ran your debug info tool before killing the box by running > > > /sbin/start_udev. The output of the tool is at > > > http://tuxrocks.com/tmp/cfs-debug-info-2008.03.06-14.11.24 > > > > > > Something is apparently happening between 2.6.24 and 2.6.25-rc[34] which > > > causes udev (or something it calls) to behave very badly. > > > > Found it. The culprit is 8f47f0b688bba7642dac4e979896e4692177670b > > dcdbas: add DMI-based module autloading > > > > DMI autoload dcdbas on all Dell systems. > > > > This looks for BIOS Vendor or System Vendor == Dell, so this should > > work for systems both Dell-branded and those Dell builds but brands > > for others. It causes udev to load the dcdbas module at startup, > > which is used by tools called by HAL for wireless control and > > backlight control, among other uses. > > > > What actually happens is that when udev loads the dcdbas module at > > startup, modprobe apparently calls "modprobe dcdbas" itself, repeating > > until the system runs out of resources (in this case, it OOMs). > > nice work! I've attached the revert below against latest -git - just in > case no-one can think of an obvious fix to this bug. Frank, can you grep for 'dcdbas' in the modprobe config files: modprobe -c | grep dcdbas ? I wonder what's going on here, that modprobe calls itself. Thanks, Kay | ||||||||||||
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