Messages in this thread | | | Subject | Re: rwx mapping between ex_table and rodata | From | "H. Peter Anvin" <> | Date | Mon, 28 Sep 2015 14:16:06 -0700 |
| |
On 09/25/2015 12:22 AM, Ingo Molnar wrote: >> >> To me it looks like another alignment/padding issue like got fixed >> before. The space between __ex_table and rodata is (seems?) unused, so >> the default page table permissions end up being W+X. Can we fix the >> default to be NX instead? It'll make these bugs stay gone. > > Yeah. Wanna send a patch for that? >
At least in the high mapping space, the default should be no permissions (not present), rather than just NX.
-hpa
| |