From: Thomas Fitzsimmons <fitzsim@fitzsim.org>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: 33174@debbugs.gnu.org
Subject: bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le
Date: Mon, 29 Oct 2018 21:28:11 -0400 [thread overview]
Message-ID: <m3bm7ccjf8.fsf@fitzsim.org> (raw)
In-Reply-To: <784dd857-cde9-d13d-0afb-234f5cdafb79@cs.ucla.edu> (Paul Eggert's message of "Sun, 28 Oct 2018 12:22:51 -0700")
Paul Eggert <eggert@cs.ucla.edu> writes:
> Thomas Fitzsimmons wrote:
>> I'm running the Linux-libre 4.18 kernel built from
>> source with powernv_defconfig
>
> In that case, please also verify that your kernel configuration has
> enabled XATTR_PAX.
Hmm, the XATTR_PAX kernel configuration option does not exist in the
kernel sources I'm using; I haven't applied any hardening or Grsecurity
patches, it's just the upstream Linux-libre 4.18 kernel, built with:
make powernv_defconfig
make
> See, for example,
> <https://wiki.gentoo.org/wiki/Hardened/PaX_Quickstart>. If you have a
> superhardened kernel that refuses to disable ASLR under any
> circumstances, then you'll need to build Emacs with './configure
> CANNOT_DUMP=yes', something I can't recommend for production until we
> get the pdumper branch merged in.
I guess I could experiment with adding the PaX patches to my kernel so
that XATTR_PAX would take effect, but I'm surprised Emacs can't complete
the bootstrap step when the kernel is in a default configuration.
Thomas
next prev parent reply other threads:[~2018-10-30 1:28 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-27 10:35 bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le Thomas Fitzsimmons
2018-10-27 13:16 ` Thomas Fitzsimmons
2018-10-27 20:26 ` Paul Eggert
2018-10-28 8:05 ` Paul Eggert
2018-10-28 12:56 ` Thomas Fitzsimmons
2018-10-28 19:22 ` Paul Eggert
2018-10-30 1:28 ` Thomas Fitzsimmons [this message]
2018-10-30 2:16 ` Paul Eggert
2018-10-29 1:47 ` Thomas Fitzsimmons
2018-10-29 7:22 ` Paul Eggert
2018-10-30 2:44 ` Thomas Fitzsimmons
2018-10-30 5:58 ` Paul Eggert
2018-10-30 9:30 ` Thomas Fitzsimmons
2018-11-12 6:39 ` Paul Eggert
2018-11-12 17:24 ` Andy Moreton
2018-11-13 2:29 ` Thomas Fitzsimmons
2018-11-13 14:42 ` Paul Eggert
2018-11-19 3:14 ` Thomas Fitzsimmons
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