On Wed, Apr 15, 2015 at 12:57:37PM +0930, Rusty Russell wrote:
>
> I've applied his patch, then the following:
Thanks.
>
> modpost: handle -ffunction-sections
>
> 52dc0595d540 introduced OTHER_TEXT_SECTIONS for identifying what
> sections could validly have __ex_table entries. Unfortunately,
Quentin Casasnovas writes:
> On Tue, Apr 14, 2015 at 02:14:14PM +0200, Thierry Reding wrote:
>> On Tue, Mar 17, 2015 at 01:40:02PM +0100, Quentin Casasnovas wrote:
>> > If one of these addresses point to a non-executable section, something is
>> > seriously wrong since it either means the kernel w
On Tue, Apr 14, 2015 at 02:14:14PM +0200, Thierry Reding wrote:
> On Tue, Mar 17, 2015 at 01:40:02PM +0100, Quentin Casasnovas wrote:
> > If one of these addresses point to a non-executable section, something is
> > seriously wrong since it either means the kernel will never fault from
> > there or
On Tue, Mar 17, 2015 at 01:40:02PM +0100, Quentin Casasnovas wrote:
> __ex_table is a simple table section where each entry is a pair of
> addresses - the first address is an address which can fault in kernel
> space, and the second address points to where the kernel should jump to
> when handling
On Mon, Apr 13, 2015 at 08:48:56PM +0930, Rusty Russell wrote:
> Quentin Casasnovas writes:
> > __ex_table is a simple table section where each entry is a pair of
> > addresses - the first address is an address which can fault in kernel
> > space, and the second address points to where the kernel
Quentin Casasnovas writes:
> __ex_table is a simple table section where each entry is a pair of
> addresses - the first address is an address which can fault in kernel
> space, and the second address points to where the kernel should jump to
> when handling that fault. This is how copy_from_user(
Adding Rusty and Michal to CC.
On Tue, Mar 17, 2015 at 01:40:02PM +0100, Quentin Casasnovas wrote:
> __ex_table is a simple table section where each entry is a pair of
> addresses - the first address is an address which can fault in kernel
> space, and the second address points to where the kernel
__ex_table is a simple table section where each entry is a pair of
addresses - the first address is an address which can fault in kernel
space, and the second address points to where the kernel should jump to
when handling that fault. This is how copy_from_user() does not crash the
kernel if users
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