Latest FC kernel still have SMP bugs?
Nigel Wade
nmw at ion.le.ac.uk
Tue May 4 09:23:28 UTC 2004
Herbert Gasiorowski wrote:
>> I've built the RHEL3 kernel on FC1 and run the system up using this.
>> Ordinary ldap requests seem quite happy, but I'm still seeing the
>> futex lock problem with nss_ldap. E.g. when I add 'hosts: files ldap
>> dns' to /etc/nsswitch.conf I get:
>>
>> # strace ping host
>> munmap(0xb75ff000, 4096) = 0
>> uname({sys="Linux", node="hostname", ...}) = 0
>> futex(0x53e4ec, FUTEX_WAIT, 2, NULL
>>
>> Setting LD_ASSUME_KERNEL=2.4.1 cures this particular problem, but
>> isn't a solution for a system relying on LDAP for all authentication
>> and NSS functions.
>
>
> The problem remains in FC2 (Test 3) with the 2.6 kernel!
>
> LD_ASSUME_KERNEL=2.4.1 seems to cure at least "ping host"
>
>
This is in some way related to nscd.
If nscd isn't running hosts don't resolve using LDAP. AFAIK, nscd should not
be compulsory.
--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw at ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555
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