On 07/25/2015 01:36 AM, Andy Lutomirski wrote:
Here's v3. It fixes the "dazed and confused" issue, I hope. It's also
probably a good general attack surface reduction, and it replaces some
scary code with IMO less scary code.
Also, servers and embedded systems should probably turn off modify_ldt.
This makes that possible.
Xen people, can you take a look at this?
Willy and Kees: I left the config option alone. The -tiny people will
like it, and we can always add a sysctl of some sort later.
Changes from v3:
- Hopefully fixed Xen.
32b-on-32b fails in the same manner. (but non-zero LDT is taken care of)
- Fixed 32-bit test case on 32-bit native kernel.
I am not sure I see what changed.
-boris
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