/proc/modules not showing any output
kpraveen.lkml at gmail.com
Wed Dec 19 10:31:11 EST 2018
On Wed, Dec 19, 2018 at 8:36 PM Greg KH <greg at kroah.com> wrote:
> On Wed, Dec 19, 2018 at 06:52:39PM +0530, Praveen Kumar wrote:
> > Hi All,
> > Compiled the vanila kernel 4.20.0-rc6 build, and was trying to get
> > module information, but /proc/modules is not showing any output ( both
> > on arm64 and x86_64 )
> > root at ubuntu:~# uname -a
> > Linux ubuntu 4.20.0-rc6-00082-g65e08c5e8631 #7 SMP PREEMPT Fri Dec 14
> > 15:54:30 IST 2018 aarch64 aarch64 aarch64 GNU/Linux
> > root at ubuntu:~# cat /proc/modules
> > root at ubuntu:~#
> > Tried with older version 4.4.162-78-default modules were properly shown.
> > Can you please help if there is something which I am missing during
> > compilation or is there any potential bug here ? Thanks in advance.
> Are you sure your .config file has enabled modules? Have you actually
> loaded any? If you do not load any, nothing will show up in that proc
> file :)
Thanks Greg for the reply.
I think I did compile with enabled modules.
kern-xen-dev:/mnt/kernel/linux # cat .config | grep MODULE
# CONFIG_MODULE_FORCE_LOAD is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set
I added a new kernel module and was able to see the module added.
kern-xen-dev:/mnt/kernel/linuxfs # insmod linuxfs.ko
kern-xen-dev:/mnt/kernel/linuxfs # cat /proc/modules
linuxfs 16384 0 - Live 0xffffffffc01c1000 (O)
I think, on my test machine, by default, there are many modules which
get added during boot up, which with vanilla kernel is not happening.
Thanks for your input.
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