Messages in this thread | | | Subject | Re: [PATCH net-next] modules: allow modprobe load regular elf binaries | From | Andy Lutomirski <> | Date | Fri, 9 Mar 2018 10:48:51 -0800 |
| |
> On Mar 9, 2018, at 10:17 AM, Linus Torvalds <torvalds@linux-foundation.org> wrote: >
> > Hmm. I wish we had an "execute blob" model, but we really don't, and > it would be hard/impossible to do without pinning the pages in memory. >
Why so hard? We can already execute a struct file for execveat, and Alexei already has this working for umh. Surely we can make an immutable (as in even root can’t write it) kernel-internal tmpfs file, execveat it, then unlink it. And /proc/PID/exe should be openable and readable. The blob itself would be __initdata so it gets discarded after it lands in tmpfs.
| |