On Fri, Oct 23, 2020 at 01:35:53AM +0200, Sohaib Mhmd wrote: > Hello, > > I tried to use: call_usermodehelper > It worked fine with > <https://github.com/smalinux/Kernel-hacking-101/blob/master/invoke-userlevel-app.c> > /sbin/shutdown and /bin/touch > but with /bin/firefox i got kernel oops: > Any clarification, thanks > > [ 2258.760627] invoke_userlevel_app: module verification failed: signature > > and/or required key missing - tainting kernel > > [ 2258.918529] do_init_module: 'invoke_userlevel_app'->init suspiciously > > returned 256, it should follow 0/-E convention > > do_init_module: loading module anyway... The kernel module you wrote is not handling errors properly, why ignore the kernel's messages here? And how can the kernel invoke a graphical program? Please look up how these types of programs work to see that the kernel can not directly call them, sorry. good luck! greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
