[diagnostic] cache_lock: blocked on 0xe29c3b08 ""
dillon at apollo.backplane.com
Wed Oct 31 23:32:40 PDT 2007
::Following [diagnostic] cache_lock: blocked on 0xe29c3b08 "quota.user" in dmesg and /var/log/messages. System almost completely hangs; I am unable to create a new shell, enter commands, etc (or even reboot). Kernel options are SMP, IO_APIC, and QUOTA. The bug appears to manifest itself after applying userquota to a filesystem, mounting it, and then issuing a few commands like mkdir/chmod/etc on it. System is a dual processor Opteron 248.
: I'll try to reproduce this one today. It sounds like it ought to be
: easy to figure out.
I haven't had any luck reproducing it yet. Could you give me a
test script to run that will reproduce the problem? Also, are you
doing your tests as root or as a user ?
Alternatively if you can get a kernel core and a kgdb backtrace of one
of the stuck processes I can probably figure out what is going on from
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