topic Re: dmesg error in Operating System - HP-UX

dmesg error

brian_31 — Thu, 29 Jun 2006 10:36:46 GMT

dmesg
can't read kernel memory

any one seen this error

Thanks

brian

Re: dmesg error

Mridul Shrivastava — Thu, 29 Jun 2006 10:39:25 GMT

I am not sure but may be you are having this problem because /etc/dmesg does not have an executable permission.

To resolve your problem, assign the following permissions to /etc/dmesg -> /usr/sbin/dmesg:

lrwxr-xr-t

Re: dmesg error

brian_31 — Thu, 29 Jun 2006 10:44:07 GMT

still the same error

Thanks

brian

Re: dmesg error

A. Clay Stephenson — Thu, 29 Jun 2006 10:45:56 GMT

Do an ls -l /dev/kmem and answer your own question. Also, don't be tempted to allow read access to /dev/kmem to all users because it is potentially a huge security leak as this is the actual kernal memory image. Writing to /dev/kmem is extremely hazardous as it alters the running kernel (in fact, that is how some of the "untuneable" tunables are changed).

Re: dmesg error

brian_31 — Thu, 29 Jun 2006 10:48:12 GMT

$ ls -l /dev/kmem
crw-r----- 1 bin sys 3 0x000001 Nov 14 2000 /dev/kmem

thx

brian

Re: dmesg error

Jeff Schussele — Thu, 29 Jun 2006 11:26:25 GMT

Hi Brian,

Have you applied kernel parameter changes, relinked & not yet rebooted?
This is the msg you'll get if so.

Rgds,
Jeff

Re: dmesg error

brian_31 — Thu, 29 Jun 2006 11:40:54 GMT

i checked and the kernel changes are not pending

thx

brian

Re: dmesg error

James R. Ferguson — Thu, 29 Jun 2006 11:44:51 GMT

Hi Brian:

As I posted in your duplicate thread, if you're not running as 'root' then this is the error you'll get.

As Clay suggested, look at the permissions of your '/dev/kmem'.

Regards!

...JRF...