newest stock kernel has similar problem -- Re: Please help: lsof reports kernel problem

Tod Merley todbot88 at gmail.com
Sun Aug 13 04:19:49 UTC 2006


Reply at Bottom:

On 8/12/06, Robinson Tiemuqinke <hahaha_30k at yahoo.com> wrote:
> Hi,
>
>  newest stock FC4 kernel has similar problem. any one
> can explain whether it is a big problem or not? any
> one see the same problems on FC5? why the kernel
> 2.6.15, 2.6.16, 2.6.17 modules reports the 'stat: No
> such file or directory' problem?
>
> Thanks a lot.
>
> [root at node100-devel ~]# uname -a
> Linux node100-devel.chineseba.com 2.6.17-1.2142_FC4 #1
> Tue Jul 11 22:41:14 EDT 2006 i686 i686 i386 GNU/Linux
> [root at node100-devel ~]# lsof | grep -i 'no such' |head
> -20
> init          1     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> udevd       601     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> syslogd    1557     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> klogd      1559     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> named      1577    named  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> portmap    1593      rpc  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> rpc.statd  1611  rpcuser  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> cfenvd     1622     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> auditd     1638     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> rpc.idmap  1665     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> hcid       1678     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> sdpd       1680     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> automount  1878     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> acpid      1890     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> sshd       1898     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> xinetd     1907     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> ntpd       1926      ntp  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> vsftpd     1935     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> mysqld_sa  1996     root  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> mysqld     2029    mysql  mem       REG        0,0
>               0 [vdso] (stat: No such file or
> directory)
> [root at node100-devel ~]#
>
>
> --- Robinson Tiemuqinke <hahaha_30k at yahoo.com> wrote:
>
> > Hi,
> >
> >  months ago I compiled 2.6.15/2.6.16 kernel on my
> > FC4
> > boxes. the vanila kernels (2.6.15.6 & 2.6.16.23) are
> > directly downloaded from www.kernel.org and compiled
> > without any changes.
> >
> >  kernels runs pretty smooth and in fact no other
> > engineers reports any problems with the kernels, but
> > today when I ran "lsof" command I found there are
> > the
> > following problematic entries related to kernel,
> > please help.
> >
> > ...
> > init          1    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > udevd       746    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > syslogd    1901    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > klogd      1903    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > portmap    1918     rpc  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > rpc.statd  1936 rpcuser  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > rpc.idmap  1960    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > acpid      2033    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > xinetd     2063    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > ntpd       2082     ntp  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > rpc.rquot  2100    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > rpc.mount  2187    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > amd        2205    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > nrpe       2220  nagios  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > crond      2259    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > atd        2275    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > dbus-daem  2283    dbus  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > hald       2291    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory)
> > hald-addo  2296    root  mem       REG    0,0
> >
> >         0 [heap] (stat: No such file or directory
> > ...
> >
> >
> >
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>
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Hi Robinson!

Interesting issue.  A Google search on "vdso" and then "vdso or
linux-gate" yeilded:

http://www.trilithium.com/johan/2005/08/linux-gate/

(the following was not the top Google but was the "push".  It is a bit
above my head and I did not have the time to follow the thread which I
am suspicious is dealing with your issue.)

http://lkml.org/lkml/2006/7/27/357

(this is a tutorial on the kernel issue involved)

http://manugarg.googlepages.com/systemcallinlinux2_6.html

Good Hunting!

Tod




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