Messages in this thread | | | Date | Tue, 22 Sep 2009 11:49:55 -0400 | Subject | Re: [PATCH v6] RO/NX protection for loadable kernel modules | From | Siarhei Liakh <> |
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> Hi Siarhei, > I tried out this patch on 2.6.31, and got the following trace during bootup.. > > ------------[ cut here ]------------ > WARNING: at kernel/trace/ftrace.c:1003 ftrace_bug+0x198/0x27e() (Not tainted) > Hardware name: VGN-Z540N ... > ---[ end trace 95b33ebf87286ae6 ]--- > ftrace faulted on writing [<ffffffffa0000193>] video_output_register+0x11/0x10a [output] > > > I guess ftrace is trying to NOP out something in the modules which > are marked read-only ?
Entirely possible. I will review ftrace and make sure the patch accounts for this.
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