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Date: Tue, 6 Oct 2015 16:49:37 +0200 From: Ingo Molnar <mingo@...nel.org> To: Arjan van de Ven <arjan@...ux.intel.com> Cc: bp@...en8.de, luto@...capital.net, peterz@...radead.org, sds@...ho.nsa.gov, keescook@...omium.org, torvalds@...ux-foundation.org, efault@....de, linux-kernel@...r.kernel.org, hpa@...or.com, tglx@...utronix.de, brgerst@...il.com, dvlasenk@...hat.com, linux-tip-commits@...r.kernel.org Subject: Re: [tip:x86/mm] x86/mm: Warn on W^X mappings * Arjan van de Ven <arjan@...ux.intel.com> wrote: > On 10/6/2015 2:54 AM, tip-bot for Stephen Smalley wrote: > >Commit-ID: e1a58320a38dfa72be48a0f1a3a92273663ba6db > >Gitweb: http://git.kernel.org/tip/e1a58320a38dfa72be48a0f1a3a92273663ba6db > >Author: Stephen Smalley <sds@...ho.nsa.gov> > >AuthorDate: Mon, 5 Oct 2015 12:55:20 -0400 > >Committer: Ingo Molnar <mingo@...nel.org> > >CommitDate: Tue, 6 Oct 2015 11:11:48 +0200 > > > >x86/mm: Warn on W^X mappings > > > >Warn on any residual W+X mappings after setting NX > >if DEBUG_WX is enabled. Introduce a separate > >X86_PTDUMP_CORE config that enables the code for > >dumping the page tables without enabling the debugfs > >interface, so that DEBUG_WX can be enabled without > >exposing the debugfs interface. Switch EFI_PGT_DUMP > >to using X86_PTDUMP_CORE so that it also does not require > >enabling the debugfs interface. > > I like it, so Acked-by: Arjan van de Ven <arjan@...ux.intel.com> > > I also have/had an old userland script to do similar checks but using the > debugfs interface... ... would that be useful to have somewhere more central? > > http://git.fenrus.org/tmp/i386-check-pagetables.pl Sure, I think it could be put into tools/testing/selftests/x86/. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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