On Fri, Mar 15, 2013 at 9:56 AM, richard -rw- weinberger <richard.weinber...@gmail.com> wrote: > On Fri, Mar 15, 2013 at 5:38 PM, Han <keepsim...@gmail.com> wrote: >> On Fri, Mar 15, 2013 at 1:35 AM, richard -rw- weinberger >> <richard.weinber...@gmail.com> wrote: >>> On Fri, Mar 15, 2013 at 5:39 AM, Han <keepsim...@gmail.com> wrote: >>>> Hi, >>>> >>>> I am trying to build and to install a kernel module into UML. The UML >>>> kernel is built from linux 2.6.2, 32-bit i386. The rootfs is >>>> Debian-Squeeze-x86-root_fs. I was able to build the kernel module >>>> successful. But when I tried to insmod, I got the kernel panic. >>>> After some debugging, I found the kmalloc() during module init >>>> returns NULL, and it was dereferenced later, hence the panic. >>>> >>>> my question is: is kmalloc() supported in UML (during kernel module >>>> init)? Is there anything special I need to do? >>> >>> kmalloc() and modules work in UML. >>> But your kernel so damn bloody old that it might contain various bugs. >>> AFAIK 2.6.2 almost older than a decade... >> >> It's 2.6.27. I know it's old. But I am not at liberty to choose >> kernel version ... > > Okay. 2.6.27 not 2.6.2. ;) > How much memory are you allocating using kmalloc()?
I started UML with "mem=128M", the module init only kmalloc 8 bytes: kmalloc(size, GFP_KERNEL); where "size" is 8. thanks. > > -- > Thanks, > //richard ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
