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Re: Latest FC kernel still have SMP bugs?



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 ion le ac uk
Phone :     +44 (0)116 2523548, Fax : +44 (0)116 2523555




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