tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: amd64: kernel aslr support

Le 17/01/2018 à 21:48, Thomas Klausner a écrit :
On Wed, Jan 17, 2018 at 08:01:19AM +0100, Maxime Villard wrote:
Why does GENERIC_KASLR disable KDTRACE_HOOKS? Is this necessary, or
are KDTRACE_HOOKS lowering the security somehow?

In fact, it's because KDTRACE_HOOKS wants to parse one CTF section; but with
our implementation we have several of them, and KDTRACE_HOOKS does not
handle that.

Chuck's patch for better ZFS/DTRACE support includes parsing of
multiple CTF sections, intended for use with kernel modules (so that
each kernel module can include its CTF). Will that be sufficient for

I guess so. But I remember there was also another issue, for some reason the
multiple CTF sections had a very huge size, and I didn't understand why. But
it can be re-investigated once the new DTRACE support is in the tree.


Home | Main Index | Thread Index | Old Index