On Thu, Jun 13, 2019 at 05:38:04PM -0400, Steven Rostedt wrote:
> On Fri, 31 May 2019 17:25:27 -0500
> Josh Poimboeuf wrote:
>
> > On Fri, May 31, 2019 at 02:12:56PM -0500, Josh Poimboeuf wrote:
> > > > Anyway, the above is a separate problem. This patch looks
> > > > fine for the original
On Fri, 31 May 2019 17:25:27 -0500
Josh Poimboeuf wrote:
> On Fri, May 31, 2019 at 02:12:56PM -0500, Josh Poimboeuf wrote:
> > > Anyway, the above is a separate problem. This patch looks
> > > fine for the original problem.
> >
> > Thanks for the review. I'll post another version, with the
On Fri, May 31, 2019 at 02:12:56PM -0500, Josh Poimboeuf wrote:
> > Anyway, the above is a separate problem. This patch looks
> > fine for the original problem.
>
> Thanks for the review. I'll post another version, with the above
> changes and with the patches split up like Miroslav suggested.
On Thu, May 30, 2019 at 03:54:14PM +0200, Petr Mladek wrote:
> On Wed 2019-05-29 14:02:24, Josh Poimboeuf wrote:
> > The above panic occurs when loading two modules at the same time with
> > ftrace enabled, where at least one of the modules is a livepatch module:
> >
> > CPU0
On Wed, 29 May 2019, Josh Poimboeuf wrote:
> It's possible for livepatch and ftrace to be toggling a module's text
> permissions at the same time, resulting in the following panic:
>
> BUG: unable to handle page fault for address: c005b1d9
> #PF: supervisor write access in kernel
On Wed 2019-05-29 14:02:24, Josh Poimboeuf wrote:
> The above panic occurs when loading two modules at the same time with
> ftrace enabled, where at least one of the modules is a livepatch module:
>
> CPU0 CPU1
> klp_enable_patch()
> klp_init_object_loaded()
>
+++ Josh Poimboeuf [29/05/19 14:02 -0500]:
It's possible for livepatch and ftrace to be toggling a module's text
permissions at the same time, resulting in the following panic:
BUG: unable to handle page fault for address: c005b1d9
#PF: supervisor write access in kernel mode
#PF:
It's possible for livepatch and ftrace to be toggling a module's text
permissions at the same time, resulting in the following panic:
BUG: unable to handle page fault for address: c005b1d9
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
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